A mobil app for foreign language test

I am looking for a developer to create a mobile app that will test users on their proficiency in Modern Standard Arabic. The app will include multiple choice questions to assess the user's language skills. The target skill level of the app users will be progressive, including beginner, intermediate, advanced, and superior. It will be Personalized, based on users answers a personalized feedback will be generated, and training wll be provided.

Ideal Skills and Experience:
- Experience in developing mobile apps
- Familiarity with language assessment and testing

- Ability to design an intuitive user interface for language testing
- Experience with gamification and adaptive learning would be a plus.