English Learning App with Gamification

I'm seeking a seasoned Android developer to create an engaging and interactive English language learning app utilizing gamification. The main objective for this app is to make it a fun and educational atmosphere where users can learn and improve their English skills. The app should be able to:

- Allow task creation and delegation that guides English learning in a structured manner
- Enable progress tracking to monitor user's continuous improvement over time.

Ideal Skills and Experience:
- Proficiency in Android Studio
- Prior experience in creating educational or language learning apps
- Knowledge of implementing gamification into mobile apps
- Familiarity with task management features

Note: Detailed gamification approach yet to be defined as the client skipped the related question. Hence a flexible approach might be required during the development stage.