It is the most stable and feature-complete option. The codebase is in Kotlin and follows modern Android architecture (MVVM). If you fork this, you get a production-ready app.
These projects are widely recognized for their reliability and large contributor bases. Quran for Android (quran/quran_android) : The source code for the popular Quran.com Android app and follows a non-profit model under the GPL-3.0 license Highlights quran app android github link
If you are a developer, an open-source Quran app is a goldmine. You can fork the repository, change the UI, add translations, or even build your own Qaida app based on the existing API. It is the most stable and feature-complete option