I like that I can set numbers included in a game down to a really low number (as low as 3) for beginning math awareness. Manually, this app can be difficult for some children, but it is good fine motor practice if set to a low number to start with in order to reduce frustration. The concept is challenging for some children too, but, with practice, I suspect that this game might be able to teach most people, even those without language who have a serious math disability, what adding is about. We are starting with the simple number repetition game for just a minute or so at a time. It is challenging and frustrating, as is anything that has to do with math and fine motor skills, but the easiest game was do-able immediately with hints from me: the app asks for 1 finger; I put one finger out; he puts one finger out and touches the screen; total success on the first try with numbers 1 and 2 and some success with number 3 (which was where I set the maximum). In the second session, I only occasionally had to prompt and there was more success with pressing three fingers on the screen at the same time. It should be pretty easy to work up to 4; after that, more dexterity (and more of the concept behind dexterity) will be required (if using just one hand, which is easier math-conceptually). I think that this app will help get across the idea of counting on the fingers, a concept that has been elusive so far. A great app to try for kids and adults with special needs who just aren't "getting" the basic ideas behind math. I like that this isn't a baby app, so it can be used for people of all ages who haven't yet learned basic math concepts. Also should be wonderful for really young typically-developing kids, of course.