I really hope the developers would do something for this little problem. 99/year for step-by-step feature is questionable. No problem with me man i like it it makes understanding math a lot easier mostly if your practicing and having problems, i highly recommend this app.
Great for explaning problem steps when the teachers not there. This app has really help me understand some of the Math lessons I had troubles with and I'm really with. It's a 5/5 experience. Clear instructions.