Great tool, makes a decent app.

Overall, it is a good app. But there is one thing that I dont like, which is the fact that you cant use some of the features from the web version. I really think that the flash cards are the most interesting and helpful part of duolingo. But you cant access them on the app, and if you have it installed, you cant go to them because you are automatically redirected to the app. Please add these other functions to the app, or have it ask before immediately redirecting to the app. It also tends to bug out when you are disconnected from the Internet, blocking progression and not playing audio.

Diamondhero about Duolingo Learn Many Languages for Free, v5.0.15