3 stars: The game is challenging and frustrating in a good way. There is one issue however. There should be some calibration method to adjust for touch screen response delay. Each device will have a different, unique amount of delay and this should be configurable. If this is added, the method for computing delay should be something the user cannot abuse or cheat to make the game easier. Rating 3 out of 5 until this is addressed.
5 stars: Just started but so far I think it's awesome. The tests feel solid and the large amount yo explore is exciting. I haven't paid for anything and I didn't sign up with email or anything. I'm able to make it black background and turn the sound on and off easy. The overall set up is simple and effective. Quite impressed for first impressions.
4 stars: The app is pretty good, I'll admit that. However,I would enjoy it if the app gave no levels for the exercises,but rather, recommendations based on what specific exercises we should be practicing first. Also, exercises could have modes that increase the level of difficulty of a certain exercise that we enjoy. That is all I have to say, since I have not experienced any technical issues, which is fabulous.
4 stars: I loved this app. Simple, entertaining, helpful and encourages reaction trainings which are necessary with many exercises to achieve so. Although, my only concern is the sometimes not responsive screen as soon as an exercise starts. For instance, i started the second exercise bu...