Your grinder. Your beans. Tonight’s exact recipe.

Cold Brew Studio does the dialing — ratio, grind, steep and cost — for the gear you already own. Then it learns what you like.

Download on the App Storeor try it on the web →

iPhone · free · no account needed

The Brew tab: a grinder dial pointing at 9–10 with the full recipe — 200 g coffee, 1500 mL water, steep window, batch cost

Set it up

Pick your grinder, bean, and brewer. The dial answers in your grinder’s own clicks — and the recipe honors what your vessel actually holds.

Know when it’s ready

The steep runs overnight. Your phone speaks up when the window opens — and again before it closes.

18hr
ready tomorrow
Cold brew ready to tasteGuatemala just hit its steep window.

Make the next one better

Rate it, tap what was off — the next recipe moves. Five clean stars pins that bean’s dialed-in brew.

next brew 1:7.5 1:8.5
82grinders, real burr math
330+beans from 74 roasters
20vessels, honest capacity

Tomorrow’s coffee starts tonight.

Set it steeping before bed. Wake up to the good stuff.

Download on the App Storeor try it on the web →

Free · no account · two minutes to your first recipe