Teen Language Learning Android App

I’m looking to create an Android app that teaches Languages and Literature to teens through engaging learning games. The core goal is a playful yet educational experience that keeps users motivated while solidly reinforcing vocabulary, grammar, and reading-comprehension skills.

Key requirements
• Android-native development (Kotlin or Java) with clean, well-documented code.
• A series of mini-games—think timed quizzes, word-building puzzles, or story-based challenges—each mapped to specific language objectives.
• Age-appropriate visuals, sound effects, and in-game feedback tuned for the teen demographic.
• Basic user onboarding, profile creation, and local progress tracking so players can pick up where they left off.
• An admin-friendly way (simple JSON or local database is fine) to add new questions, passages, or vocabulary without a full app update.

Nice-to-have
• Lightweight leaderboards or achievement badges to spark friendly competition.
• Option to expand later into other subject areas without major refactoring.

Deliverables
1. APK and source code ready for Play Store submission.
2. Setup instructions plus a short README explaining how to extend or tweak content.
3. One revision round after initial handoff to iron out minor bugs or UI polish.

If you’ve built educational or game-based Android apps before, I’d love to see examples. Let’s make language learning fun for teens!