5 stars: Fantastic app for bite-sized learning. You can learn multiple things at once, but you only get a bite-sized learning session as well as a separate practice say of questions everyday (if you stick with the free edition). It's perfect for me and it's a great way to learn with a building block approach. I highly recommend
5 stars: As a beginner, I have had a great experience. The courses are well structured and easy to learn and understand. All I would wish is that the make the communities there more open to allow for interaction with diverse groups, fascilitators (or instructors) and employers for a concise learning approach and orientation.
4 stars: Really great app. I'm doing the SQL lessons and they provide easy to follow instructions and tutorials and a good variety of practice exercises. My only complaint is that there's often quite a lag between submitting a query and seeing the result. It sometimes takes several minutes for it to load and sometimes I have to exit out of the app and just try again for it to work.
4 stars: Love the desktop version, the instructions are very vague, but the tips that the interface give you help in figuring out the problems. Sometimes is kind of annoying but that's part of programming. The app is not bad but it's hard to type programming lines on a mobile. So I don't blame the app for that. If I have extra time waiting on something outside of my home or office I use the app version. But definitely prefer the Desktop versi...