Privacy Policy

Effective date: October 30, 2026

Signet collects no data about you. Your documents, signatures and settings stay on your iPhone.

What we don’t collect

Signet is an e-signature and PDF tool that works entirely on your device. The app makes no network requests, has no accounts or servers, and uses no third-party SDKs. In particular:

• No personal data, device identifiers, usage history or location is collected.
• No analytics, crash reporting, advertising or tracking, and nothing is shared with third parties.
• The documents you import, scan or sign, and your signatures, stamps and ID copies, never leave the device and cannot be seen by the developer.

Where your data lives

Documents, signatures, stamps and settings are stored in the app’s own storage on this iPhone, protected by iOS Data Protection. Deleting the app removes them. You can delete any document or signature inside the app at any time.

Permissions and what they are for

Signet asks only when you first use a feature that needs a permission, and you can decline; declining only turns that feature off.

• Camera: to scan documents, IDs and stamps. Images stay on this iPhone.
• Face ID: to protect your signatures and documents. iOS performs the check; the app only learns “passed” or “not passed” and never receives biometric data.
• Photos (add only): to save page images you export to your library. Signet does not read your library; when you choose photos it uses the iOS photo picker, and only the photos you pick are handed to the app.
• Notifications: for signing due dates and ID-copy deletion reminders. These are local notifications scheduled on the device; there is no remote push.

Widgets and the Share Extension

The Home Screen widgets and the “Share to Signet” extension exchange data with Signet through an App Group on the same device. Nothing goes over the network. Widgets show document names by default; you can turn that off in Settings.

Backups

A backup is a file (.signetbackup) that you export yourself, encrypted with a password you choose (AES-256-GCM). The password is not stored and we cannot recover it; without it a backup cannot be restored. Where the file goes is up to you through the iOS share sheet, and from there it is handled by the app or service you chose.

iCloud and the Files app

• Version 1.0 does not offer iCloud sync.
• “Files app mirror” is on by default and can be turned off in Settings. It saves a copy of your signed documents only (never ID copies) in the app’s folder in Files on this device; whether that folder syncs to iCloud Drive depends on your own iOS settings.

Files you share

When you send a signed document to LINE, Mail or another app through the share sheet, the file goes to the app you picked and is covered by that app’s privacy policy. Signet never sends files on your behalf.

Information from Apple

If you allow “Share With App Developers” in iOS, Apple may give developers anonymous, aggregated crash or usage statistics. Apple collects that data, it contains nothing that identifies you, and it is not collected by Signet.

Children

Signet collects no data from anyone, including children under 13.

Changes to this policy

If a future version changes how data is handled (for example by adding sync), we will update this page with a new effective date first, and explain significant changes inside the app.

Contact

Questions about privacy: w.yihhsuan@gmail.com