"If you need a conversion app, this is the best convertor app available for the iPhone. Not to mention, it is free! If you need a convertor app, please try this one first before you think about buying some of the other ones that are out there. This app truly does convert everything you could possibly want. It has a wonderful GUI that is easy to use and the favorite button is a great-added feature, allowing quick access to your more frequently-used conversions."Wrote Simon at his blog. Thank you!