Privacy policy

Kettle Stitch. Last updated: 2026-10-14

Kettle Stitch does not collect any data. What you enter stays on the phone you entered it on, in encrypted storage. We run no server for the app, it has no sign-in, and it contains no analytics or advertising code.

1. Who we are

Kettle Stitch is published on Google Play by PIRULINK LLC. For this policy, PIRULINK LLC is the data controller. Write to contact@pirulinkllc.store with any question about it.

2. Information the app handles

Kettle Stitch plans hand-bound books. What you put into it is about books and materials: titles, page counts, trim sizes, folds, the papers you use (size, thickness, grain, weight and price per sheet), how your printers turn a sheet, tags, notes, and which sheets you have printed.

All of it stays on your phone. None of it is sent to us or to anyone else, and we have no way to see it.

3. Information we collect

None. We receive nothing from the app: no usage statistics, no crash reports, no device identifiers, no location, no contacts.

4. How the information is used

The app uses what you enter to work out sections, blank pages, the page order on each side of each sheet, creep, grain direction, spine width, sewing thread and the paper a print run needs. Those calculations run on the phone.

5. Sharing

We share nothing, since we hold nothing. A file leaves the phone only when you export a backup, a book list or a sheet plan yourself, and it goes wherever you choose to save or send it.

6. Security

Records are kept in an encrypted database (Hive with AES-256). The encryption key is created on the phone and held in Android's secure key storage through flutter_secure_storage. Your phone's own screen lock adds to that protection.

7. How long data is kept

Until you delete it. You can delete a book, a paper or a printer at any time, and Settings has a Clear all data option that removes everything at once. Uninstalling the app also removes all of it. Because we keep no copy, there is nothing to ask us to delete.

8. Accounts

Kettle Stitch has no accounts, no passwords and no user identifiers.

9. Children

The app is a craft and print-room tool meant for adults and is not aimed at children under 13. It collects nothing from anyone, children included.

10. Your rights

Access, correction, deletion and portability rights apply to data a company holds about you. We hold none. On the phone you can view, edit and delete every record, and export a complete copy as JSON or CSV from Settings.

11. Third parties

The app includes no third-party services. Google Play distributes it under Google's own privacy policy, which covers the download and not anything the app does afterwards.

12. Permissions

Kettle Stitch asks for one Android permission, INTERNET. It is used only to show this page when you open Settings and tap Privacy policy. The app cannot read your location, camera, microphone, contacts, files or accounts.

13. Data safety on Google Play

The listing declares that no data is collected and no data is shared. Data is encrypted on the device and can be deleted from inside the app.

14. Changes to this policy

A revised policy is published at this same address with a new date at the top.

15. Contact and legal

Questions go to contact@pirulinkllc.store. PIRULINK LLC is the data controller, with no joint controller and no processor, because no personal data is processed off the phone.

GDPR. We do not process personal data within the meaning of the General Data Protection Regulation, so there are no transfers, no lawful basis to state and nothing to report to a supervisory authority.

CCPA and CPRA. We do not collect, sell or share personal information and have not done so in the last twelve months. There is nothing to opt out of.