Android Jobs

I'm seeking a talented mobile app developer to create a cross-platform sobriety app. The primary goal of this app is to support individuals in their journey towards sobriety. Key Features: - Daily Tracker: Users should be able to log their daily progress and track their journey towards sobriety. - Motivational Quotes: The app will feature a collection of motivational quotes to inspire and uplift users. - Progress Charts: Visual representation of their progress in the form of charts or graphs. Additional Features: - Alcohol Test Device Connection: Ability to connect with an alcohol test device through Bluetooth for added accountability. - Alcohol test result history management - Competition Rank Board: A competitive element where users can see how they rank against others in their ...

I need a Flutter developer for small Customization and Playstore and apple store uploading service. * I purchased one flutter code from themeforest *Additionally, I require a few Edits in app - Integration of two web URLs into the app - Customization of the splash screen * Playstore and Apple Store Uploading Support. Account will be taken from our side *the project will start next week

I'm in need of a developer who can create a cross-platform taxi booking app for me. The app should be sleek, user-friendly and include all the necessary features for a taxi service app. Key Features: - GPS tracking: I need the app to be able to track the location of the user and the driver. - Payment integration: The app should allow for seamless and secure processing of payments. - Ride history: It would be great if the app could provide a history of past rides for the user to reference. I'm open to suggestions for additional features that might enhance the user experience, so your expertise in this area would be highly valued. Please make sure you have experience in creating similar apps and are able to show me some examples of your work.

I'm looking for a skilled Android app developer to create a comprehensive mobile app focusing on Family Planning. The app will serve as an educational resource and a referral service for users exploring family planning methods. Key Requirements: - Development on Android Platform: The app should specifically be developed for Android devices. - Comprehensive Information: The app should provide detailed information on all family planning methods, including effectiveness, usage instructions, and potential side effects. - Side Effects and Management: Users should be able to access information on the potential side effects of various family planning methods, as well as guidance on how to manage these effects. - Referral Service: The app should offer users options to find and access family ...

I'm seeking a skilled Flutter developer to assist with a few functional enhancements on our existing iOS and Android webview app. The project involves integrating push notifications, enabling file uploading in Android, ensuring mailto links open in the mail app, and addressing issues with loading images in the side menu and header logo. Key Requirements: - Extensive experience with Flutter, particularly in the context of webview apps. - Demonstrable expertise in integrating push notification services. - Prior work on file upload functionality in Android webview apps. - Familiarity with handling mailto links in webview apps. - Proven ability to troubleshoot and resolve image loading issues in webview apps. Your role will primarily focus on implementing these enhancements quickly and ...

I have a project that involves working with text data, conducting visualization operations, and integrating these into a mobile application. Key responsibilities: - Working with text data: You should be experienced in handling unstructured text data, understanding its nuances, and transforming it for visualization purposes. - Data Visualization Proficiency: Your responsibilities include creating clear and meaningful visual representation of the data. This includes the ability to create graphs, charts, and other visual tools that can help users easily comprehend the data. - Mobile Application Integration: The end goal is to embed these visualizations effectively into a mobile application. This requires an understanding of the nuances of mobile UI/UX design and optimization for smaller ...

I'm looking for an experienced AR developer to create a cross-platform AR application for Android and iOS. The primary function of the app will be product visualization, with a focus on making it a versatile tool that can be helpful in various sectors. Key Requirements: - Expertise in AR Development: You should have a strong track record of developing AR applications, ideally with a focus on product visualization. - Cross-Platform Development: The app needs to be compatible with both Android and iOS devices, so experience in cross-platform development is essential. - Versatile Visualization Tools: The app should not be limited to a specific product type. It should be designed to cater to various sectors, such as furniture, cars, clothing, and more. If you're confident in...

I'm looking for a skilled Android app developer to create a comprehensive mobile app focusing on Family Planning. The app will serve as an educational resource and a referral service for users exploring family planning methods. Key Requirements: - Development on Android Platform: The app should specifically be developed for Android devices. - Comprehensive Information: The app should provide detailed information on all family planning methods, including effectiveness, usage instructions, and potential side effects. - Side Effects and Management: Users should be able to access information on the potential side effects of various family planning methods, as well as guidance on how to manage these effects. - Referral Service: The app should offer users options to find and access family ...

I'm looking for a highly skilled professional to develop a mobile application for managing a small inventory of less than 100 products. Key functions: - Inventory tracking: The application needs to monitor and update inventory levels dynamically as sales and restocks occur. - Comprehensive reporting: I require detailed inventory level reports to ensure steady product availability. Ideal Skills and Experience: - Proficiency in mobile app development: You should have a robust portfolio of mobile applications, particularly those with inventory management features. - Understanding of inventory systems: Experience with inventory control mechanisms and generating inventory level reports is critical for this project.

I'm in need of a talented software developer well-versed in both Swift and Java to build a plugin for Capacitor.js. The aim of the plugin is to enable backgrounded applications to listen and register device's volume button clicks as events. Here are the detailed requirements: - Platform Compatibility: The plugin should work seamlessly on both iOS and Android platforms. - Functionality: The primary functionality involves detecting volume button clicks even when the app is running in the background. The event-triggered by these clicks should be a callback function to the plugin. - Complexity: The event to be triggered is not a simple alert or notification. It involves interaction with a custom callback function enhancing the complexity level of the project. A developer with knowle...

I'm in need of an experienced team who can work on both my native Android and iOS apps. Our Android app is based on Java and the iOS app on Swift. We will provide to do list what issues need to fix. Backend related apis will be provided by our team. Also after issues fixing required one month support for any issue or bug fixing in the existing apps. You should have in-house developer no outsource. Should be full time working.

We have Andorid TV app built in OS 9 chipmunkband seem to have problem working in Andorid boxes 10 and 11 but work on phone no problem and So we think we may need to upgrade gradle and some depencies Also we need package changed so the upgrade is done it will installed and not conflict with exsisting apps that are same Build .so os will see as a different app Attached are two soure codes similar

I'm in need of an Android app, designed to cater for both phones and tablets. The app is dedicated to astrology, and must include the following features: - Daily Horoscope: A system that can provide daily horoscope readings for users. - Zodiac Compatibility: A feature allowing users to check the compatibility between different zodiac signs. - Birth Chart Analysis: A section for detailed birth chart analysis for users. I'm looking for a developer who has ample experience in Android app development, particularly in the realms of astrology or similar niche markets. Strong UI/UX design skills would be highly beneficial. Please share any relevant portfolio pieces when bidding.

I'm in need of an experienced mobile app developer to create a new food delivery app. The app should be compatible with both iOS and Android operating systems. Features: - User Registration & Login: An essential feature that allows users to create an account and sign in. - Menu Browsing & Ordering: A menu system that is easy to navigate and enables users to place orders efficiently. - Delivery Tracking: A feature that keeps customers informed about the status of their delivery in real time. Key Payment Options: - Credit/Debit Card: Secure and easy-to-use online payment method. - Cash on Delivery: A popular option where the customer pays upon receiving their order. Ideal candidates for this project should have: - Previous experience in developing food delivery apps. - Profi...

I'm in need of a versatile and creative app developer to create a card game. The project will be cross-platform compatible on both iOS and Android, reaching the broadest possible audience. Key features of this project include: - Development of a card game application - Cross-platform compatibility (iOS and Android) Ideal candidate should exhibit the following skills and experiences: - Proven experience in mobile app development - Proficiency in game design - Strong understanding of both iOS and Android platforms - Experience creating card games would be a significant advantage. Understanding and aligning with the project vision is critical, while attention to detail will be paramount. I look forward to viewing your portfolios and reading about your previous game design experi...

I am looking for an experienced mobile app developer to create a mobile app for IOS and Android devices. Mobile application to manage two devices: The objective is to develop an application to manage two devices via WiFi (can be expanded in the future). We have two devices: sauna and red light therapy panel. They all have a touch control panel and can connect to your mobile phone via Bluetooth and Wi-Fi. Many of the providers even offer you the mobile application already developed (as you can see in the video of the red light panel) but only for each product category. The idea is to make a similar application from which the two devices can be managed (time programming, lighting, power, etc.). And the history of uses/configurations is saved. Please clarify in the response to this projec...

I'm looking for a seasoned mobile app developer to create a mobile application for both IOS and Android devices. Mobile application to manage two devices: The objective is to develop an application to manage two devices via WiFi (can be expanded in the future). We have two devices: sauna and red light therapy panel. They all have a touch control panel and can connect to your mobile phone via Bluetooth and Wi-Fi. Many of the providers even offer you the mobile application already developed (as you can see in the video of the red light panel) but only for each product category. The idea is to make a similar application from which the two devices can be managed (time programming, lighting, power, etc.). And the history of uses/configurations is saved. Please clarify in the response ...

I'm seeking a skilled developer to create a VPN app for both iOS and Android, with a particular focus on features for premium members. Key Features: - The app should cater to premium members, offering them exclusive features and benefits. - Implementing a 'kill switch' to ensure users' online security. - Including multi-factor authentication to enhance the privacy and protection of the users. - An ad blocker is also expected to be incorporated within the application. I have no strict timeline for this project as quality and functionality are the main priorities. Therefore, I'm looking for a professional who can deliver a robust, feature-rich VPN app for both major platforms. A strong track record in developing similar apps along with a good understanding of VPN t...

I'm in need of a skilled developer who can craft a multiplayer ping pong game for both web and mobile platforms. It is very simple left right tap game with score system, I need somthing kind of tournament tables. Ideal Freelancer: - Experience in developing multiplayer games, especially in the sports genre. - Proficient in crafting games for both web and mobile platforms. - Good understanding of the sport's rules and mechanics would be a huge plus.

I've developed an app for my business and need assistance in setting up the corresponding Apple App Store and Google Play Store accounts. Key requirements: - Create an Apple App Store account - Create a Google Play Store account - Troubleshoot and determine if a previously unknown Apple ID can be used for the Apple App Store account Ideal candidates for this job should have: - Experience in setting up Apple App Store and Google Play Store accounts - Good problem-solving skills to deal with potential issues that may arise during the account setup - Knowledge of Apple devices for the Apple App Store account creation, as an existing device may be required Looking for a professional who can ensure a smooth and efficient process in getting my app listed on both the Apple App Store and ...

Hi! I'm looking to launch a new dating website and need a talented Full Stack Developer to help bring this vision to life. Here's what you need to know: Project Overview: Platform: Existing framework for web app, website, iOS, and Android apps. Technology: Built on the Skadate/Oxwall platform. Scope: Redesign the current framework to meet the latest standards, ensuring the platform is eye-catching, fast, and stable. Key Responsibilities: Design: Use Figma (or a similar tool) to create the layout. Development: Implement the design onto the existing framework. Plug-ins: Integrate necessary plug-ins (minimal custom development required). Deployment: Ensure everything is set up and deployed to a live environment. Expectations: Timeline: Complete the project in around 1 month. Bu...

We are looking for a good mobile developer with the following skills: - 2D visualization using chat with zoom, selection, panning. - 3D visualization using , unity.

As a client, I'm currently facing some user interface issues in my mobile application built with the Swift programming language. I need an experienced freelancer to help me identify and fix these bugs. Key Requirements: - Proficiency in Swift - Previous experience with bug identification and resolution in mobile applications - Strong understanding of user interface principles Your Role: - Identify the root cause of the user interface issues - Implement efficient and lasting bug fixes - Conduct thorough testing before delivering the final product - Suggest any additional improvements to enhance user experience and interface design This is a small project, but I'm looking for someone who can deliver quality work efficiently. If you have the necessary skills and experience, pleas...

I am in need of a skilled developer to create a high-quality Android casino app. Key Features: - User Registration and Login: Users should be able to create accounts and log in to play. - Casino Games: A variety of casino games will be integrated into the app to keep users engaged. - Payment Integration: The app should have secure payment gateways for in-app purchases and withdrawals. - Admin Control: I need a separate admin login with the capability to: - Adjust game rules: The admin should have the power to tweak rules to improve user experience. - Change game outcomes: Admin should be able to modify game outcomes to keep the experience fair and engaging. - Manage user accounts: The ability to oversee and moderate user accounts is crucial. Design Preferences: - The user int...

I'm looking for an experienced app developer to build a classified app for both iOS and Android platforms. Key Features: - Messaging system - Photo & Video sharing Ideal Skills and Experience: - Proven experience in building social networking apps - Proficient in app development for both iOS and Android - Strong understanding of user experience and interface design - Ability to integrate messaging and media sharing functionalities Please provide examples of similar apps you have developed in the past. A detailed proposal outlining your approach to developing this app will be appreciated.

I'm looking for an experienced software developer to create an AI recruiting software tailored for the healthcare industry. The ideal candidate should have previous experience with LMS and building recruitment tools. Key features: - Resume Screening: The software should be able to effectively screen resumes for healthcare positions. - Candidate Ranking: Implement a system that ranks potential candidates based on their qualifications and experience. - Interview Scheduling: The tool should also have a built-in feature that enables easy and efficient interview scheduling. Preferred Resume Screening method: - Keyword Matching: A system to match keywords in resumes to job requirements - Machine Learning Algorithms: An algorithm to predict candidate suitability based on historical data ...

I am seeking a skilled Swift iOS developer who can create an innovative, user-friendly application for managing driving routes via GIS .shp files. Key Features: 1. Import GIS .shp files and convert them into driving routes. 2. Incorporate a web portal feature to assign and track drivers. 3. Real-time updates on the progress of each route. The ideal freelancer for this project should have experience with Swift, iOS development, .shp file manipulation, and incorporating real-time updates into an app. The app also needs a mobile version for drivers to access their routes; therefore, experience with mobile app development is also desired. More specifications will be provided upon selection. Looking forward to a fruitful partnership.

## Flutter Mobile App Developer (Gaming/Gambling Profitability) - One-Time Fee Are you comfortable working in the gaming/gambling profitability niche? We're seeking a talented Flutter developer to create a complete mobile app for both Android and iOS platforms. This is a one-time project with a **fixed fee paid upon successful completion**. **Project Details:** * Develop a mobile app based on a provided design and prototype. * Utilize Flutter framework to ensure a seamless cross-platform experience (Android & iOS). * Implement all functionalities outlined in the design and prototype. * Ensure smooth user experience with intuitive interface and navigation. * Follow industry best practices for code quality, maintainability, and performance. * Deliver well-documented, clean code...

I'm in need of a competent app developer to create a Sparks app for the Android platform. The key feature of the app should be order tracking. Technical Skills and Experience Required: - Proficient in Android app development - Prior experience in creating apps with order tracking feature - Strong understanding of UI/UX for mobile devices - Knowledge in modern design practices Design aesthetics are open for discussion given I've skipped that part in the questionnaire. Deliver an app that is functional, user-friendly, and complements the Sparks brand. Your portfolio showcasing similar projects would be of great interest.

I'm looking for a skilled game developer to create an engaging 2D game for both iOS and Android platforms. The main objective of this game is to complete levels, and I envision it in a fun and playful cartoonish art style. Key Requirements: - The game should feature 10 levels in total, each progressively more challenging than the previous. - Implement in-game purchase functionalities to enhance player experience. These should be well-integrated into gameplay without disrupting the user experience. - The game must be compatible with both iOS and Android devices, ensuring smooth performance and functionality on various screen sizes and resolutions. Skills and Experience: - Proven track record in developing 2D games for mobile platforms, particularly iOS and Android. - Proficiency in ...

i have a game that i want to rollout to production for 100% users. please help me

I'm in need of a skilled app developer to create a dual-platform mobile application that is solely geared towards educating adults. Key Project Details: I wanted a mobile app that I can upload my some content like videos and written text that my client can go through and consume the content and they get a reminder of the next appointment and also some of the exercises that they need to do between a visit. I want the app to have a membership and username and password for members to access - Development Platforms: The app should be designed to work seamlessly on both iOS and Android devices. - Educational Focus: The primary goal of the app is to deliver educational content, so a background in creating educational apps is a plus. - Target Audience: The app is intended for adu...

Hello! We're looking for an expert in Android or Flutter for an urgent project. Currently, we have the system connected on Android, but the app is lacking in many aspects. We need to connect the system on Flutter and develop the functionalities we need. In Android, we need to implement an ID confirmation and a dropdown category indicating products delivered in the main warehouse, among others. This will help us keep better control over the system. It's urgent, and we need to complete it today! If you have experience in Android or Flutter and can help us with this, please contact us as soon as possible!

I'm in need of a skilled Android developer to help create a Telegram clicker bot application. The bot should be able to perform various interactions within the Telegram app, primarily for mining purposes. The main functionalities the bot should have include: - **Automated Clicking:** The bot should be able to click on specific buttons within the Telegram app. - **Mining:** This is the main function, the bot is expected to mine in the app. The ideal candidate should have: - Proficiency in Android app development. - Experience in developing Telegram bots. - Knowledge of mining capabilities. The project is to be completed within a reasonable time frame. Please provide examples of previous similar projects.

I'm in need of a talented game developer to create a mobile game for both iOS and Android, in the grinding genre. I will provide map converters and all necessary assets for the game. Key Features: - Multiplayer Functionality: The game should have the capability for players to interact with each other in-game. - Leaderboards: Implement a system for players to compare their achievements and progress. - In-app Purchases: Include a functioning in-game store where players can purchase virtual goods. As the project is mainly about implementing the provided mechanics, I'm looking for someone with experience in online game development, particularly in the mobile sector. In addition, knowledge of grinding game mechanics will be helpful. An ideal candidate would have experience with imp...

I need a Point of Sale (POS) iPad application specifically designed for our nightclub. The primary function of this app is to efficiently track sales. However, there are additional features that are essential for improving our business operations and customer experience. Key Features: - **Customer Loyalty Program Integration:** I want this app to seamlessly integrate with our customer loyalty program. This will help us retain existing customers and attract new ones. - **Employee Management:** The app should allow our staff to easily manage transactions, track their sales, and communicate with customers through the app. - **Songs Queue Requests:** It is important that the app allows our staff to manually select songs for playback from a queue of requests. Ideal Skills and Experience: - P...

I am looking for expertise in React Native. The first module of the application is straightforward: it involves taking a picture and saving it to a local folder. Subsequently, the pictures need to be uploaded to Google Drive or a similar shared drive. The goal is to take pictures, extract data using machine learning and OCR. I can make payments, but they will be small and incremental. Additionally, I am looking for someone proficient in leveraging ChatGPT and other AI/LLM development tools. Looking forward to your prompt response.

I need a simple Android app that can automatically send messages to a WhatsApp group at random times. The app should: - Allow me to adjust the number of messages sent daily - Send messages at truly random times User Interface: - A simple UI for: - Adjusting the daily message count - Customizing the message content The app does not need to include analytics to track the number and timing of messages sent. More information: Can someone develop an Android app that can do the following: Automatically send a message in a WhatsApp group at random times. For example, send 3-5 messages per day at random times. The number of messages should be adjustable within the app. The messages should be sent between 9:00 AM and 10:00 PM (always at random times). The time range during which the message...

I am in need of a proficient developer with experience in Android and camera driver development. The project goal is to create a camera driver for Samsung A55 Android 14 that will broadcast a video stream from a PC via ffmpeg, RTMP, or NDI. Key Functionalities: - The driver must be able to capture photos. - Record videos. - Adjust camera settings. - Have an internal driver for input on OTG (usb) video. Specific Requirements: - Must meet real-time video streaming requirements. Critical Experience & Skills: - Android development. - Camera driver development. - Understanding of ffmpeg, RTMP, or NDI streaming protocols. - Experience with OTG devices and real-time video streaming. Please provide your previous work samples related to this project in your bid.

I'm looking for a skilled developer to create a phone control application that will run on my Windows PC. The primary function of this application should be remote control of both Android and iOS devices. Key Requirements: - Development of a phone control application compatible with Windows OS - The application should support remote control functionality for both Android and iOS devices - Ensuring smooth and responsive performance of the application - Interested in any additional features or suggestions for improvements from the developer Ideal Candidate: - Proficient in app development for Windows OS - Experienced in creating remote control applications for mobile devices - Familiarity with both Android and iOS operating systems - Excellent problem-solving skills to ensure smooth ...

I'm looking for a seasoned Flutter developer to enhance my existing Android app with Firebase integration. Key Requirements: - We have already developed the are looking for enhancement in existing app. 1) Reduce the Google MAP load time 2) User able to change From Address also. Ideal Skills: - Proficiency in Flutter: As the app is built on Flutter, advanced knowledge of the framework is crucial. - Experience with Firebase integration: You should have a proven track record of successfully integrating Firebase services like real-time database. Please provide examples of previous work demonstrating your expertise in Flutter and Firebase.

We are starting a project to develop a QR code payment application called "Metropol Pay" that will run on the Android platform. The application will be designed to perform the following basic functions, with a user-friendly interface: get tokens QR code creation Payment inquiry Cancellation and refund procedures These functions will be exposed via AIDL and can be triggered via App2App from another application. The application will manage Metropol Pay's payment processes, show the user the QR code and query the transaction details. When opened, Metropol Pay will receive a token with a 5-minute validity period from a Token API, then generate the QR code and display it on the POS screen. The screen will be designed to be user-friendly and informative, and the necessary feedba...

I am looking for a skilled developer knowledgeable about Minecraft server plugins. Your job will be to create and implement some crucial functionalities to enhance player experiences. Here's what I need from you: * Develop a Chat System: We need a comprehensive chat system that allows players to communicate freely and effectively. * Establish an Economy System: This will be critical in regulating player transactions and creating an overall balance in the game world. * Create Mini-games: Our server should contain mini-games for players to partake in. These should be engaging and enjoyable. * Introduce Survival Elements: Implement survival elements like 'lifesteal', that provide added suspense and excitement. The main goal here is to create an engaging community where playe...

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I'm looking for a skilled developer who can help me resolve a recurring issue with my React Native application. Although I don't have specifics on when the app crashes or the specific actions that trigger the issue, the app is currently unstable and crashes periodically. Your main task will be to identify, locate, and resolve the source of this instability. This could involve a range of potential issues from memory leaks, state management problems, race conditions, to others. The ideal candidate should have: - extensive experience in debugging React Native applications, - be familiar with the common culprits of app crashes and how to mitigate them, - be able to work independently based on the problem description provided. If you have successfully resolved similar issues ...

I need an expert to optimize my home Xfinity WiFi network, connecting various devices and applications, including Samsung/Android phone, Sonos devices (older ones ZP100 and ZP80), Gosund Smart Plugs, Xfinity Stream to SmartTV via Chromecast, Brother Printer, Ideal attributes: - Knowledge in home WiFi networks, including Xfinity as provider and Google Mesh network. - Experience troubleshooting device and application connectivity issues with network and SmartTV. - Proficiency in network coverage optimization. - Familiarity with Sonos, Brother Printers, Gosund Smart Plugs, Hisense SmartTV

I have two projects to do on Android Studio by java language. I'm waiting good offers . Task : Create a Music / MP3 player mobile application in Flutter or in Android Studio that recommends its users the local area popular songs based on their GPS location. Submit the source code and the apk file as Task2.zip. Task : Create a Mobile Application for a Cafe Restaurant to receive orders from its Customers. The Application should offer a list of menu items [For Example: Coffee, Garlic Bread, Cheese Sticks etc.] You can choose the menu items from 4-5 items as per your choice. Try to make the application visually appealing and interactive in terms of graphical user interface (GUI). Demonstrate your coding and presentation skills by creating a short video of "you" breifly exp...

Project Description: We are seeking a skilled freelancer to help us capture high-quality screenshots and record demonstration videos of our mobile app for both Google Play and the Apple App Store. The freelancer should have access to both Android and iOS devices to perform the tasks effectively. Requirements: Screenshots: Android: Capture 10 high-quality screenshots showcasing all key functionalities of the app. iOS: Capture 10 high-quality screenshots for each device size: iPhone 6.7" iPhone 6.5" iPhone 5.5" iPad 13" iPad 12.9" Screenshots must be taken directly from each device; resizing from other screenshots is not acceptable. Ensure all screenshots comply with the guidelines of both Google Play and the Apple App Store. Screenshots should highlight the main f...

I am in need of an experienced React Native developer to create an e-commerce app compatible with both iOS and Android platforms. The project is expected to: - Transform my existing design into a functioning - Implement necessary features and functionalities for a seamless shopping experience - Ensure smooth compatibility and performance on both iOS and Android Your primary responsibility in this project will be to bring my design to life, with a focus on delivering a high-quality e-commerce app that is efficient, user-friendly, and visually appealing. Experience with e-commerce app development, React Native, and the ability to work across multiple platforms is a must. You need to create a project from scratch You've to follow proper coding standards You need to implement onboard...

I need a simple Android app that can automatically send messages to a WhatsApp group at random times. The app should: - Allow me to adjust the number of messages sent daily - Send messages at truly random times User Interface: - A simple UI for: - Adjusting the daily message count - Customizing the message content The app does not need to include analytics to track the number and timing of messages sent. More information: Can someone develop an Android app that can do the following: Automatically send a message in a WhatsApp group at random times. For example, send 3-5 messages per day at random times. The number of messages should be adjustable within the app. The messages should be sent between 9:00 AM and 10:00 PM (always at random times). The time range during which the message...