Android App concept

I’d opt for GoLang (cross-platform code, will enable Desktop next to Mobile) with QT.
See https://github.com/therecipe/qt for a list of targeted and host platforms supported.
It seems for iOS you’re limited to MacOs but for all others, any host can deploy to it.

For comms you should stick to the winning team, which is BLE, for the sake of libraries.

I agree with you there is good information on your forum it sounds really good it would be good if android app development should do this project so that after allowing these apps at the same time the help of apps bundle can be obtained thanks for providing such information.

Why no flipper mobile app in huawei appgallery?