In app purchase

Coachmarks to show overall navigation

Instructors tab has a free scroll in a 2D space

Home page has snippets of content from different courses

Home page to article transition

Searching in classes

Profile and login

Class landing page

Fine tuning transitions, pop up for out of sessions

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Memrise Pro in app purchase

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