This is a wonderful app that has doubled my toast quality and made made roasting coffee even more fun. It is very deep and very customizable. At the same time, it is easy to use even when your in the middle of an intense roast session. I roast with my grill and a drum so I have to manually enter my curves. It is very easy to do and thats not something most roast software devs have accomplished. I also love the variety of data you can enter which makes it perfect for those that take this science/art seriously. There are a few things Id like to see improved. Mainly, the graph is a bit hard to read. Despite the customizability, it can get very cluttered and the dark background makes it hard to decipher. Here are a few other things in the roast section I personally feel could be better: - Easier to read graphs - Can change minimum temp of graph -- not just 0 - section for moister loss percentage - section for development percentage - section for preheat temp - ability to hide unwanted sections (like agtron or roaster voltage) - it should remember or save curve names and parameters when adding a curve - in the bean inventory, it shouldnt go into the negative numbers. Just 0. Otherwise, this is an amazing app that Ill continue to use as I develop my roasting skills. Great work!