Privacy Policy

Last updated: September 26, 2026

StackWorks ("we") describes here how the iPhone app "Brew Lab Notes" (ブリューラボ, "the app") handles your information.

1. Information we collect

We do not collect any personal information through the app. The app has no account, advertising, analytics or tracking.

2. Information stored on your device

Beans (name, roaster, origin, roast date, remaining amount, photo, etc.), brews (date, dose, water, temperature, grind, taste, notes, etc.), custom recipes and settings are stored only on your iPhone. They are never sent to our servers. They are included in your iPhone backups and are deleted when you delete the app.

3. Photos

When you attach a photo to a bean, the app reads only the photo you pick in the iOS photo picker, resizes it and stores it in the app. It does not read any other photos.

4. Notifications and Live Activities

Pour cues during a brew, peak-freshness notices and restock reminders are local notifications created on your iPhone. The Lock Screen Live Activity is also created on your iPhone. No push notifications from external servers are used.

5. Purchases

Brew Lab Plus is purchased through Apple's App Store. We never receive your payment information. The app communicates with the App Store only to check whether you have purchased it.

6. CSV export

When you export CSV, the file goes to the destination you choose, and is handled under that service's terms.

7. Changes

We will announce any changes to this policy on this page.

8. Contact

StackWorks　contact@stack-works.dev