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

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

Duolingo Plus lets you download lessons offline and removes ad. You can start with a 7 day trial

Profile and settings

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

Add friends to compete with. You can search by name or find them from facebook

It quizzes you with audio and visual questions to make you understand and to increase recall

Gamification badges and progress

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

Learning path

Start free trial for IDAGIO Pro

In app purchase

In app purchase to buy track effects