Android/iOS mobile Application

Hello
I need to make iOS app & android app for lawyers notebook for any lawyer
It would be simple,
1- Registration - Login - Sign out
By Name - Email - Password & Touch ID
2- Add case Only title and details
For each case There are sessions & for Per session There are reports
- Add a session that includes session date - session time - sission place - Judicial Department No.
- Add session report : only Details and tasks
Details is onle text field
Task Text field & date field like to do list
3- archives : I can convert every completed case into an archive
General Notes :
- I needed an alert system in the app (Remind me before - days - huor ) Connected to mobile calendar
- Arabic and English Languages
- Two types of date Islamic and Gregorian