CrackLog: Coffee Roasting Log
Tap first crack, get the curve
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
First crack pops — hit the big button once, and a dot lands on the curve. Drop, and that curve becomes a card. No account, no server; your roasts stay on this phone.
The moment you hear that first crack, tap once and a dot lands on the curve.
Time, temperature and both cracks go in by hand. The roast curve draws itself as you go, and the second you drop, that batch becomes a card in your collection.
No account, no server. Everything stays on this phone.
HOW A ROAST GOES HERE
Hit Charge and the timer starts at 0:00. Punch in the temperature your roaster is showing, as often or as rarely as you like. When first crack starts popping, hit the big button. One tap, no form, no time picker — and if you hit it too early, undo it right there. Hit it again at second crack. Drop when the beans are where you want them, and the timer stops: total time and DTR are added up, and the batch card is made. The screen stays on the whole time the timer is running.
BY HAND, ON PURPOSE
Nothing here measures for you and nothing listens in. You read the roaster, you punch in the number, you hear the crack and you tap. CrackLog shows you DTR and yield, and it never tells you whether the roast was good. Roast level is your call, made with your eyes, ears and nose.
TRY IT BEFORE YOU ROAST
The demo roast replays ten minutes in thirty seconds, so you can tap your first crack right now with no green beans in the house. Demo batches carry a badge and stay out of your stats and overlays.
A SHELF, NOT A STREAK
Every batch you drop turns into a card: the curve with both crack markers, DTR, bean and origin, charge and drop weight, yield, the roaster you used, the roast level you picked yourself (Light through Italian, eight steps) and a one-line process note. They stack up in your collection, filterable by bean and by roast level. No streaks, no missions, no nagging. Roasting is a once-or-twice-a-week habit and CrackLog treats it like one.
NEXT BATCH, DIALED IN
Show your last batch of the same bean as a semi-transparent line under today's curve, and steer this roast toward it.
STAYS ON YOUR PHONE
No account. No server. No network requests at all, and no permissions asked for. Export every batch as a single JSON file and import it back any time. From Settings you can also wipe every batch and setting in one go. No ads, nothing to buy.
The developer, KYUNGHWAN KIM, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- KYUNGHWAN KIM
- Size
- 39.1 MB
- Category
- Food & Drink
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 18 more
- English, Arabic, Dutch, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Dog Foot