Why another one? There is Khan academy, IXL, Anton and Many others. Good question deserves a good answer - we still have not mastered maths teaching. And we have designed this app with that in mind.
The fact is teaching works quite alright for an average student. When classes are as big as 30 students, the ones needing more attention are often left to fend for themselves. All this was already outlined by by Salman Khan in his TED talk .
The app is currently in the beta stage. It is currently available to beta testers. If you would like to join the beta, please send an email to math@whatd.app