Duolingo

Duolingo is a super-popular language learning app that boasts over 200 million users. While most people use it for free, it has to balance promoting in-app purchases, a subscription, and ads.
Onboarding on Duolingo video screenshot
2:20
Onboarding on Duolingo
17 screenshots • 17 emails
Completing a level on Duolingo video screenshot
3:26
Completing a level on Duolingo
13 screenshots
In-app purchases on Duolingo video screenshot
0:44
In-app purchases on Duolingo
10 screenshots
Leaderboards on Duolingo video screenshot
0:21
Leaderboards on Duolingo
4 screenshots
General browsing on Duolingo video screenshot
0:56
General browsing on Duolingo
10 screenshots