Collaborate development of an existing Native Android App

I'm looking to collaborate development of an existing Native Android app that is currently live and published on the Google Play Store.

Requirements:
- The app can be simple; functionality and complexity are not critical.
- The app should be currently live and published on the Google Play Store.
- Open to various categories as long as the app complies with Google Play policies.
- Must have no active violations or strikes.

When applying, please provide:
- Play Store link
- Brief app description
- Relevant statistics (downloads, ratings, etc.)
- Tech stack: Kotlin preferred or Java

Thank you!