Hi there
You can also create a local database on the user's phone at the same time
And if you don't have access to the Internet, use it
I'm experienced in android, iOS, and swift and VIPER architecture. I have enough skills in flutter for mobile. And we have an experienced team for android.
I need more info to help me to give you a good price in real time.
Please contact me over chat to talk about your project in detail and let me see your app
Also, we support the app for 6 months so don't worry about future bugs.
Hope to hear from you soon.
Thanks