Android Utility App Development -- 2

I'm Kunal from Nepal, currently developing an Android utility app. I'm seeking guidance and expertise in mobile app development, specifically for the Android platform.

Key requirements:

- Proficient in Android development

- Experienced in creating utility/tool apps

- Ability to provide guidance and insights on project progression

- Ability to optimize app performance for better speed and efficiency

Your expertise can significantly influence the success of this project. Looking forward to your proposals.

The project should be completed within 2-3 months. The app should include battery optimization tools. The app should include a file manager feature. The app should have a dark theme design. The app should adopt a minimalistic design for a clean user interface. The app should be designed to cater to general users. The app should incorporate strong privacy features. The app should include app lock functionality. The app should support multiple languages.