This app is truly awesome. It is an app that can truly be used in early elementary classes and be used all the way up through college level mathematics. What it allows you to do is literally write (using your finger or stylus) the equation and it will solve it for you. Certainly on the iPhone and it’s smaller screen it is not as effective as say and iPad mini or a full size iPad. It simply works quite well. There is no help on how to do the equation you’re working on, so you need to know what you’re doing (especially for that upper level math). Best of all this bad boy is free. Check it out here.