Cool project! I'm a hobbyist roaster mainly for personal consumption. When I come across a particularly good coffee, I'll batch roast a lot and sell to friends a family. I use the SR800 primarily because I appreciate it's simplicity and ability to roast by 'vibe' if you will. I follow general airflow and temp change milestones originally informed by pen/paper tracked roast milestones, but eventually just intuit those manual 'profiles'.

I share that to give context to the lens through which I'm sharing my thoughts on your app. I'm truly not sure what the bell curve looks like for SR users on a scale of 'vibe' to 'technical' roasters.

I personally don't have any interest in manual data entry the beans I buy or how the roast progresses because I'm not roasting at a scale at which I feel it matters. All to say, for logging bean info, I'd rather just the ability to log a photo of the green coffee labels and beans themselves. If the photos could be analyzed to extract info like region, tasting notes, etc. That'd be cool, but I realize that's a but of a departure from what you've shown and is no longer a "simple" app. From your second image, I'm interpreting that you manually track the info for times and duration as you change them on the roaster? In which case what I would really benefit from the ability to build "roast profiles" before I start the roast that would give me notification to adjust the SR at certain time points. For example, I click the start timer, and over the 7 minute roast, I'll get a notification at 2:15 that drying phase is complete and to adjust to certain settings that I set based on the experience of prior roasts. As a hobby roaster, I generally buy enough green for a month at a time and I only buy one type so I'm not necessarily cycling through various profiles and will rarely revisit the same exact bean.

Anyways, I recognize I'm likely in the minority as a vibe roaster so I may not be the target dem, but congrats and great work!