Questions or problems? Email support@letarel.com and include your device model and app version (Settings › About › Version).
Add a skill (for example a language or an instrument), then add a course with its modules and lessons, or just tap Log study at the bottom of the screen to time your study or enter the minutes.
From the lessons you tick on the course page. Skill progress is your own estimate, set in the skill editor.
When you log practice or finish a lesson, pick when to review it. Due reviews appear on Today; tap one to mark it reviewed or move it.
Settings opens from the gear at the top of Today. Turn the reminder on in Settings › Reminder and pick a time. Allow notifications when asked. The reminder never shows course or skill names.
Settings › Export JSON creates a file. On the other device, Settings › Import JSON reads it and replaces the current data after you confirm.
Delete single records from their edit screen or menu, or use Settings › Delete all data. Every deletion asks for confirmation.