Roastmaster is an absolutely excellent app! To be honest, I was pretty sceptical and never pay even close to $10 for an app... ever. I thought that the screen shots were pretty but I feared that the app itself would be just pretty without being a robust and scalable tool. I was totally and completely wrong. I started home roasting several years ago and am now in the process of launching my own coffee roasting business. I used Behmor Thing for a long time since one of my roasters is the Behmor. While that application is good and provides many similar functions(roasting, inventory, cupping etc.), Roastmaster is 1000X better. It is scalable and flexible - all data can be edited (in real time for the most part). I needed something that would help track roasts (obviously), track inventory, track tasting from batches (or groups of batches), handle blends, etc. Blends can be created from green beans or roasted beans either by weight or %. You can create temp curves, profiles, add vendors & costs paid for beans. I cant image much that a home roaster or small shop roaster would need that this app does not provide. Ive roasted <30 times with it and every day I find more I like it more and more. Aside from the roaster itself this app has become an essential tool for me. Little parts of the UI that I didnt realize were functional... are. I found a little roast timer today by accident that you can set on the fly anywhere in the roast cycle, useful for multitaskers so you dont miss a critical moment like 1C. I love that there is integtration with Dropbox. This means that with a few very simple steps I can roast with my iPhone even though typically roast with my iPad. Simply export the current database to Dropbox (from the iPad), then navigate to dropbox and open it on the iPhone (It promtps you to open it replacing the current data on that device or open it along side) and youre off and roasting with your other device. Brillant! This is quite literally the best $10 Ive spent in recent memory. For the record I am not employed or affiliated by the developer at all. Im just a happy roaster =)