I just picked up an AeroPress for the first time, and I have to say that I was quite skeptical about how good it would really be. I had similar questions about this app. Turns out the AeroPress is a fantastic single-cup coffee brewer, and this app is a great companion to make sure you are using it properly.
Let me just say that while I LOVE the AeroPress, Im still a bit of a skeptic that the different brewing techniques make that much of a discernible difference. Can you taste the difference between steeping for 20 seconds and stirring versus a 60 second soak on a coarser grind? Maybe, maybe not, but its fun to try. More importantly, the app and its series of instructions and timers are sort of like a flight manual making sure that you incorporate all the necessary steps, and dont do anything that will completely throw off the brewing process.
Theres probably a few dozen recipes here, and some useful instructions on traditional vs. inverted method, grinding techniques, and water temperature. As others have noted, it would be nice to have even a 5 star rating system so I could remind myself (or see other users opinions) of how much I liked or disliked a particular method. But its a neat little app and its a convenient tool to always have with you, particularly since AeroPress is so useful on-the-go.
HouseOfHomuth about AeroPress Timer, v2.4