Black screen camera Android App

I want to develop a black scrren camera for Android devices. There are few apps like this but these are pure shit. Important features: When shooting a photo or a video no sound should be heard A very good and detailed info page will be presented at the first page of the app, and the user can tick to shut ig down to the future In the configuration screen the user will be able to choose clearly where the photos and videos are saved at. When the user will go to the google photos app and click on Device Folders he will see a folder with these photos and videos The camera should use the builtin camera app / functions of the phone In the configuration screen the user will choose what buttons to use to gake a picture: volume up / volume down / tap on screen / double tap / fingerprint...... The app will be in google play store with no ads and no in app purchases at the beginning. The source code will be placed in my repo on gitlab and all the rights will be mine.