ЯРепетитор (оплаты, посещения)

The application will allow:
- Maintain a customer database with a detailed questionnaire for each;
- Fix payment;
- Mark classes (group, individual) and visits;
- Add subscriptions to clients;
- Analyze in the reports payment, attendance and balances of subscriptions;
- Make a plan of classes and exercises

All data is stored only in the application on the smartphone/tablet. Deleting an app deletes all app data.