15GRMS

Twelve guided recipes for V60, AeroPress and cold brew. The timer runs with your phone locked, and every brew logs itself. No account, no ads, nothing collected.

15GRMS is a brewing companion for people who make coffee by hand.

Pick a recipe, tap once, and start pouring. The timer counts each step against the clock and tells you exactly how much water should be on the scale, so you can watch the kettle instead of the phone.

ONE TAP TO BREWING Your last brew waits on the home screen with the dose you used. Tap Start and you are pouring in about five seconds.

IT KEEPS TIME WITHOUT YOU The timer runs against the clock rather than against the app, so locking your phone or switching away never breaks a brew. It is still correct when you come back. Set a cold brew going and 15GRMS tells you when it is ready, ten hours later.

TWELVE RECIPES, CREDITED The Hoffmann Method, 4:6 Method, Winton Five Pour, The Adler Original, Overnight Concentrate and more, credited to the people who developed them. Each pour shows its target on the scale, with the reasoning behind the steps that matter.

DIAL IN YOUR DOSE Change the dose, ratio or temperature and every pour target recalculates as you turn the dial. Your change is remembered for next time.

A JOURNAL THAT FILLS ITSELF IN Every brew is logged the moment it finishes, with nothing to type. Rate it, tag how it tasted, add notes if you feel like it.

COFFEE COACHING, NOT LECTURES Too bitter? Sour? Thin? Say so in one tap and 15GRMS suggests a single conservative adjustment, explains why, and applies it the next time you brew that recipe.

MAKE IT YOURS Three colour palettes in light and dark, switchable at any time.

PRIVATE BY DEFAULT No account. No sign-up. No analytics. No ads. 15GRMS makes no network requests at all, so everything you record stays on your phone, and it works perfectly with no signal. Export your journal as JSON whenever you like.