A calculator,
set in type.

Pick a roast and dial the dose. PourCraft computes the pour to the gram, then walks you through the brew with a live timer.

Download on the App Store
  • Free for iPhone and iPad
  • iOS 17 or later
  • No account, no tracking
The Brew tab of PourCraft on iPhone: Light, Medium, and Dark roast rows with Medium selected at 1:16, a 20 g dose on the ruler, and the top of the pour card showing 320 g of water.
No. 01 The Brew

The Pour.

Three roasts, one ratio each, and the pour by weight.

Choose your roast.

Dial in the dose.

Start from

20g

at a ratio of 1:16 10 g to 60 g

The pour, by weight.

Total water 320g
  • Bloom · 30 sec 40g
  • Remaining · spiral 280g
  • Water temp 200° to 205° F

Start from the coffee or from the water. Flip the toggle and the math runs the other way. Water temperature follows the roast: hotter for light, cooler for dark.

No. 02 The Guide

The Method.

Eight steps, in order, by the gram.

The Guide tab on iPhone: today's recipe of 20 g coffee, 320 g water, and 200° F, the live timer at 0:04 in the bloom phase with Reset and Pause buttons, and the first three steps.

The Guide reads your recipe back as steps with the numbers filled in. Start the timer and it keeps pace: a 30-second bloom, the spiral pour, drawdown, done. Haptics tap at each phase change, and the steps advance on their own if you let them.

  1. 01
    Heat the water 200° F

    Bring water to 200° F. No thermometer? Let a rolling boil rest 30 to 60 seconds.

  2. 02
    Rinse the filter 15 sec

    Place the paper filter in your dripper. Rinse with hot water to wash out paper taste, then discard the rinse.

  3. 03
    Add the grounds 20 g · medium grind

    Add 20 g of medium-ground coffee, the texture of sea salt. Tap to level the bed.

  4. 04
    Bloom 40 g · 0:00 to 0:30

    Start the timer. Pour 40 g of water evenly over the grounds, saturating every dry spot.

  5. 05
    Wait, watch 30 sec

    The bed swells and bubbles as CO₂ escapes. This is the bloom. Patience here pays off in clarity.

  6. 06
    Spiral pour 280 g · 0:30 to 2:30

    Pour the remaining 280 g in a slow, steady spiral, center out, then back in. Avoid the filter walls.

  7. 07
    Drawdown 2:30 to 3:30

    Let the water finish drawing through. Total brew time: 3:00 to 4:00. Longer is over; shorter is under.

  8. 08
    Pour, sip, study Enjoy

    Decant. Take a moment before the first sip. The aroma is half the cup.

No. 03 Tips

Field Notes.

Eight pieces of advice we'd give a friend.

Most great cups fail on a small detail. These are the small details.

Contents 8 entries
  1. 01
    Technique Grind matters more than beans. A great roast destroyed by a stale blade grinder is just brown water. Burrs first, beans second.
  2. 02
    Chemistry Water is 98% of the cup. If your tap tastes good, brew with it. If it doesn't, neither will your coffee.
  3. 03
    Method Bloom is not optional. Skip the bloom and you trap CO₂ that fights your pour. The first thirty seconds set up the rest.
  4. 04
    Chemistry Hotter for light, cooler for dark. Roast level decides the temperature. Pulling against it is the difference between bright and bitter.
  5. 05
    Method A ratio, not a recipe. 1:15 to 1:17. Memorize the band, scale the dose, and stop measuring with a scoop.
  6. 06
    Technique Pour slowly, in a spiral. A gooseneck kettle is half technique, half jewelry. The spiral pour is what it buys you.
  7. 07
    Beans Fresh, but not too fresh. Beans need a week to settle. After four, they fade. Read the roast date, not the sell-by.
  8. 08
    Practice Taste, then adjust, one variable at a time. Bitter? Grind coarser. Sour? Grind finer. Don't change three things at once and call it a method.
Field note 01 open on iPhone: a large copper 01, the title Grind matters more than beans, its dek, two paragraphs of body copy, and the pull quote Two of the same grams, ground differently, are different coffees.
No. 04 iPad

On iPad.

Prop it by the scale.

On iPad the tab bar becomes a sidebar, the Brew tab opens into two columns, and a field note reads beside its index. Every orientation, with the same care as iPhone.

PourCraft on iPad in landscape: a sidebar with Brew, Guide, Tips, and About, the Field Notes index in the middle column, and note 02, Water is 98% of the cup, open on the right with its pull quote and a By the numbers card.
No. 05 About

The Colophon.

A note on what this costs, and what it collects.

PourCraft is a small calculator that takes coffee seriously without taking itself too seriously.

Choose a roast. Set the dose, or start from the water. The numbers fall out. Then we get out of the way and let you brew.

By the numbers

Price
Free
Requires
iOS 17 or later
Devices
iPhone and iPad
Account
None
Data collected
None
Network
Never
Ratios
1:17 · 1:16 · 1:15
Appearance
Light and dark
Saved preset
“Save as my morning”

Begin the brew.

Download on the App Store

Made for people who weigh their coffee, and own a kettle with a spout that looks slightly silly.