I decided to search for new apps, thinking it can help me get back to studying japanese on my own when I found Bunpo.
I don't know if I have mentioned this but... if anyone ever reads this, I do not recommend studying on your own, I created this blog as a journal, to keep myself motivated. I do not have serious plans, like doing the JLPT test or moving to Japan, so if you're actually considering those things... do classes / go to school to learn properly:)
I came across Bunpo recently and thought it is a pretty good app. Very simple UI, easy to find content in its categories. It does require you to pay to review your words, but I guess you can ignore that tab and do your own reviewing system...
This app reminds me a bit of Coban, which I also like but... has some bugs. Both follow a similar structure of reading about the subject and then doing a quick test. Veeeery different from Duolingo, which has a more complex interface, full of illustrations and sounds BUT does not give you proper information and you just go with the flow, not understanding grammar or where the heck you are (beginner, intermediate, idk?).
The app does not provide pictures like Busuu does, but it's still quite useful, especially if you prefer to navigate through specific categories rather than follow a sequence of unlockable lessons.