5 stars: I'm using this app to brush up on some seldom used programming languages and to learn new ones, and it's great! You earn points as you complete lessons, which can be used to \
5 stars: No. Ads. This has been a great and easy to digest experience. The lessons are explained in a concise, short and well thought out way that allows you to do most of the thinking. I'm not on a pro account and I have not seen a single ad which makes the learning process so much more enjoyable. Can't recommend enough if you want to get into Python.
4 stars: Some of the explanations are a little confusing but it is useful enough that I paid for a subscription to get rid of the minimal ads. The app lets you experiment with code instead of just filling in blanks and it allows access to lessons you've already done so you can go back if you forget something (not all of these apps do that unless they get your money first).
4 stars: The tutorials are simple and easy enough to follow. The play function for some languages needs work, though, because a majority of the questions I see aren't about understanding the language, but instead quickly solving complicated math equations. Would have been a great feature if it actually focused on code instead of convoluted math.
3 stars: Best coding app. Period. Had issues that prevented me from using the app for a couple weeks, but the developer was on the case and has resolved the swipe issue. Kudos, and thanks! Edit: Haven't used this for age...