A cold brew studio for the gear you already own.

Set up your exact grinder and brewer once, then dial in any bean you buy. Cold Brew Studio works out the recipe for your setup, and gets it closer every time you rate a batch.

Download on the App Store or try it on the web
The Brew screen: a Fellow Ode dial set to 8.5 to 9.5, 110 g of coffee to 1,500 mL of water, a Monarch bag beside an Ovalware RJ3 carafe, and a Start steeping button

Every popular grinder, built in.

80+ of the most popular grinders were researched and created, giving you a full digital studio for your gear. Pick yours and your own dial shows up with the cold brew setting marked on it. Found a sweet spot of your own? Drag the dial there and the recipe follows.

Fellow Ode Gen 18.5 to 9.5

A few from the lineup

See every grinder

Comandante C40 MK434 to 38 clicks
1Zpresso K-Ultra122 to 138 clicks
Baratza Encore28 to 32
Fellow Opus9.5 to 10.5
Turin DF64 Gen 271 to 80
The Ovalware RJ3 carafe, full of finished cold brew
Hour 16. That’s cold brew.

Sized to what you brew in.

From a quart mason jar to a gallon dispenser, pick the brewer you use and every batch is sized to what it actually holds. Go Everyday, Strong, Jet fuel or Concentrate, or follow your brewer’s own recipe.

Curious what the hours do? Drag the slider and watch a batch go from pale to ready.

  • Takeya Deluxe, 946 mL of waterTakeya Deluxe946 mL of water
  • Hario Mizudashi, 1.15 L of waterHario Mizudashi1.15 L of water
  • Toddy Classic, 1.893 L of waterToddy Classic1.893 L of water
  • French press, 900 mL of waterFrench press900 mL of water
  • Mason jar, 710 mL of waterMason jar710 mL of water

19 brewers built in. Using something else? Add your own with its capacity. See every brewer’s recipe

Start it steeping. Pour it when it’s ready.

Tap Start steeping and the batch follows you onto your Lock Screen, counting the hours. Your phone lets you know when it’s ready to taste, and once more before it steeps too long.

On the web?

Add it to your Home Screen: Share → Add to Home Screen on iPhone, or Install app in Chrome. A calendar reminder, with an alarm, stands in for the Lock Screen timer.

The Steep screen seven hours in: the Ovalware carafe half steeped, 7 of 18 hours
Hour 7Steeping
The Steep screen when the batch is done: a dark, finished carafe and the words It's ready.
Hour 16Ready

Dial in every bean.

Rate each batch and say what was off. The next recipe adjusts, and once a bean is dialed in, its best recipe waits on your shelf, ready to brew again.

Send the recipe, not a screenshot.

Tap share on Brew and the web app draws your recipe as a card: your dial at its setting, the bag, the brewer and the numbers. It goes out with a link that opens Cold Brew Studio on the same grinder and brewer.

Just after a number? Look up your grinder’s cold brew setting or your brewer’s recipe.

A recipe card: Hair Bender from Stumptown, 34 to 38 clicks on the Comandante C40, 338 grams of coffee to 1,893 millilitres of water in a Toddy

Bring the beans. We’ll do the math.

Start a batch whenever it suits you. Your phone tells you when it’s ready.

Download on the App Store or try it on the web