5 stars: I've only used this app for 20 minutes and I'm ready to give it 5 stars. Smooth operation, slick design and layout, easy to use and easy to find things. Whatever algorithms for arranging the order of the problems is top tier genius. It runs well on my old tablet so far. I'll probably be adding this to my other devices as well. No fooling around, I'm very glad I found this
4 stars: Enjoy challenging myself. Can do it any where. No explanations of how the sections work though.. if you need support just email and you will get a really quick answer. It has really helped me with my mental maths. My favourite app.
4 stars: Big bummer. I was using Matix every day to help with my memory arithmetic. Unfortunately the training sessions are no longer free. I would have gladly paid for *new* features, but it creates trust issues when features start disappearing behind a pay wall.
3 stars: I went through all the way to the end and I finished on 1586 tix and level 142. I worked really hard for 30 minutes every day. Some of the problems are very easy, but most of them up in the higher levels are ridiculously hard. Also, I am disappointed with the ending, after I completed the final boss fight three times. No medal, no balloons, nothing. There weren't even fireworks! Just,
3 stars: Children's account can't use. Update for Developer: Check out ibisPaint and Pixel Studio Family... they have an in app purchase version and a buy from store version. I own both. My kid lo...