Brew Tuner: A Brew-by-Brew Dial-In Log

Every coffee is a tiny experiment: tweak the grind a hair finer, push the dose up by a tenth, change one variable and see what the bean does. Without a log, you end up running the same experiment three Saturdays in a row and never quite landing the shot.

Brew Tuner is the dial-in companion I wanted on my counter. It's an iOS and Android app for logging every brew with grind setting, dose, yield, time, rating, and notes. Pick a bean, pick a grinder, pick a method (V60, AeroPress, espresso, French press, Moka, whatever you invent), then tap Adjust & re-brew to chase the sweet spot one variable at a time. The per-bean dial-in view groups your attempts so you can see the grind move across tries.

No accounts, no ads, no tracking, and fully offline. Your data lives on your device, with a single-JSON backup you can stash in iCloud, Google Drive, or anywhere else you trust. Available on the App Store and Google Play.