Android App Functionality Analysis

I need an Android mobile application reverse engineered to understand functionality of two functions

Key requirements:
- Experience with Android app reverse engineering.
- Proficiency in tools like JADX, Frida, ghidra ,ida .
- Ability to document findings clearly and comprehensively.

Ideal skills and experience:
- Strong background in mobile app asm c ,ghidra, particularly on Android.
- Knowledge of Android architecture and components.
- Prior experience with reverse engineering projects.

Please provide a detailed approach and timeline.