5 stars: Amazing app. One could think when s/he sees his/her score going up that the improvement is restricted to the app but it actually goes beyond that. The good it does is unbelievable. Saw a lot of improvement in many different areas of my cognitive skills. I would have never thought this app could help that much.
4 stars: So far So good! Puzzles and challenges aren't like some apps where it's impossible and you feel like a dummy, but also they're not so easy your bored! There's a good amount of challenges, they are short so you can squeeze in quick little games or up grade to pro, for a fee, to get more games
3 stars: the games are great, the interface too, but there are so many ads now, even after the free games you have to watch an ad to see your results. overall for a 6 game training you have to watch 10 ads, 4 of which are over 20 seconds. it's just a lot and breaks away from the rhythm of the game and makes the experience feel a bit clunky. you even have to watch an ad to see your stats now..
5 stars: Love what I can do - it is frustrating to not be able to see information on my progress with the free app. I can open different places thinking it is going to tell me something only to see the 'purchase ' bar
3 stars: I do like this app, but it is very annoying that when you choose to continue with ads instead of paying, it constantly pops up saying 'oops, something went wrong playing the video....'.....so you can't continue half the time.
5 stars:...