Terms of Use

Last updated: September 26, 2026

These terms set out the conditions for using the iPhone app "Brew Lab Notes" (ブリューラボ, "the app") provided by StackWorks ("we"). By using the app, you agree to these terms.

1. The app

The app guides coffee brewing with a timer, records beans and brews, and suggests adjustments based on your records.

2. Suggestions and numbers

Next moves, peak freshness, extraction yield and restock forecasts are calculated from general brewing theory, rules of thumb and the values you enter. They do not guarantee any taste or result. Take care not to burn yourself with hot water.

3. Paid features

Brew Lab Plus is a one-time purchase through the App Store. Purchases and refunds follow Apple's rules. You can restore your purchase with "Restore Purchases" on devices using the same Apple Account. Family Sharing is supported.

4. Data

Your records are stored on your iPhone. We are not responsible for data lost because of device failure, loss or deleting the app. Keep important records with CSV export or iPhone backups.

5. Prohibited use

Do not modify, reverse engineer or misuse the app.

6. Disclaimer

The app is provided as is. Except in cases of our intent or gross negligence, we are not liable for damages arising from using the app.

7. Changes

We may change these terms and will announce changes on this page.

8. Governing law

These terms are governed by the laws of Japan.

9. Contact

StackWorks　contact@stack-works.dev