It is a life changer as my grades have drastically went up, it was so stressful until I found this app, thank you This app, I struggled on something and I needed help so I found this and tried it and it was a very VERY big help.
It would be well worth the $40 a year. Any work or equation I must do for work can be double checked. With that been said I see the potential for improvements. The camera sometimes take a little time to focus, but that's the only thing everything else is actually really good love this app that helps me with my homework and things that I need to do over the summer and stuff, so if you're looking for an app that will help you, then you should get this app.