The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Limpossible Technologies:
Whether you are a student just learning about them or a world renowned mathematician, proportions are a key to everyday math. Although proportions are usually easy, sometimes you don't have scratch paper or the numbers are just a pain to calculate. That's where this app comes in.Proportion Solver is an easy way to solve proportions. Just leave the unknown value blank and within seconds an answer appears rounded to the nearest ten thousandth. But you don't have to even pay ten thousandth of a cent because this app is free!Features:-Solves proportions in a breeze!So what are you waiting for! Download Proportion Solver Today!Questions? Comments? Concerns? Email firstname.lastname@example.org or visit limpossible-tech.com for more information.