You earn crystals as you complete lessons. You can buy more from the Shop tab

Bottom sheet for wrong answer

Asks you to select a daily goal and then notification permissions

The curriculum is arranged linearly as a timeline with tests interspersed in between

You have 5 lives. When you run out you can wait, practice, or refill by spending crystals

Profile and settings

Gamification badges and progress

There are posts by other learners and mini "games" that help you test your skills

The splash screen is the logo on a green background

In app purchase of Pacemaker Plus

Daily check in from home page

To see images in chat, you need to buy a subscription via in app purchase

Daily goal complete