MohtasaUnique

Pros - well designed - very smooth animations and controls - beginnings of a unique and engaging puzzle where the solutions require trial and error to understand how particles interact - no ads Cons - I beat it with minimal difficulty in less than an hour, not even trying to rush it, just casually wasting time - levels are fairly simple, even at the end. You can tel some of the levels tries to encourage you to find procedural solutions, but most are just trying to draw the correct path through particle obstacles. - zero replayability $0.99 would be fair for an hour long as-free diversion,

I've been recently looking for an app that has all the useful mathematical formulas since I've got a loaded college schedule next semester full of calc, physics, and chem/science classes. I've looked through the app and am happy with the collection, however I'd like to see a feature added to allow us to save our own formulas and create our own examples of all existing formulas for future reference.