Developing one or two simple mobile apps, but...

I'm looking for a freelancer as a subcontractor to design, publish on Google Play and AppStore, and further develop simple mobile apps, but... that communicate with the API of the Moodle platform or Wordpress LMS. The app for a soccer school with graphics like in the link: https://drive.google.com/file/d/1vsPvIUk3FpWp0uzjr9tCi-XFuf3ApOF0 should allow:

1. Registration and login - for assigned courses;
2. Browsing lessons - simply, like a tree of folders and subfolders with pictures (as in the app) showing the smallest educational units, which are theoretical lessons. The main purpose is to explore hundreds of lessons. One lesson unit displays in the form of three tabs: (1) Lesson content, (2) Videos; (3) Knowledge test. Besides the theoretical lessons, there's the same structure for hundreds of practical lessons or field exercises.
3. Learning – practical and theoretical lessons for the week. Here you can enter and complete a lesson. Information on training sessions for the week – as practical lessons.
4. User profile - user data and graphical charts of skills in 4 categories and 24 evaluation criteria.
5. Calendar - showing theoretical lessons, practical lessons (training sessions), and matches.
6. Extra materials – additional optional theoretical lessons.
7. Chat – a module to communicate with coaches and group members.

API Moodle: https://docs.moodle.org/dev/Web_service_API_functions and https://docs.moodle.org/dev/Core_APIs or API Wordpress LMS: https://docs.thimpress.com/learnpress/developer-guide/rest-api/ 

Conditions:

1. Start work ASAP, Completion in 1 month,
2. Designer is responsible for graphics and gaining knowledge about the API operation
3. Fixed price for one or two apps + hourly rate for further app development.