Hand Drip Lab Privacy Policy
Effective date: October 1, 2026
This is a draft. Before launch, finalize the retention period, account deletion method, server location, and whether analytics tools are used.
Personal information we collect
You can use Hand Drip Lab without signing in by choosing “Browse.” In that case, all records are stored only on your device and are never sent to the developer.
If you link a Google or Apple account, we process the following information.
| Item | Purpose |
|---|---|
| Account identifier and email address (provided by Google/Apple sign-in) | Sign-in and account identification |
| Records you enter (recipes, brew logs, taste notes, bean and grinder info) | Syncing across devices and backup |
Information stored on your device
Records and app settings are stored on your device so the app works offline. Deleting the app also deletes the information stored on your device.
Service providers
- Supabase: sign-in authentication and record storage (database)
- Google, Apple: social sign-in
- Tally: storing responses to the website contact form
- Google (Gmail): receiving support emails
Information collected when you contact us
If you contact us through the website contact form or by email, we receive the following information.
| Item | Purpose | Retention period |
|---|---|---|
| Email address | Replying to your inquiry | 1 year after the inquiry is resolved |
| Inquiry content | Handling your inquiry | 1 year after the inquiry is resolved |
Retention and deletion
Records linked to an account are kept as long as the account exists. When you request account deletion, we promptly delete the account information and records stored on the server.
Your rights
You can request access to, correction of, or deletion of your personal information, or deletion of your account, at any time. Please contact us at the address below.
Contact
Changes to this policy
If this policy changes, we will post the update on this page and update the effective date. When we add features that handle new kinds of information — such as analyzing grind size from photos — we will reflect the items and purposes in this policy first.