Privacy Policy

1. Scope and contact

This policy applies to the SlipNote app for iPhone and iPad, this support website, and support messages sent to Song Yufei ("we," "our," or "us"). SlipNote does not require a SlipNote account.

Questions or privacy requests can be sent to songyufei@gmail.com.

2. Information handled by SlipNote

3. Camera, photos, and on-device recognition

SlipNote requests camera access only when you choose to photograph a question or answer. It uses the system photo picker when you choose an image from Photos. Text recognition is performed on the device with Apple Vision. We do not operate a server that receives your images or recognized text for this processing.

You should review recognition results, especially formulas and handwriting, before saving or sharing them.

4. Optional iCloud Sync

iCloud Sync is off until an eligible Pro user enables it. When enabled, user-created cards, images attached to those cards, folders, tags, and review progress sync through Apple CloudKit. Built-in learning packs, Pro question banks, answer images, and bundled resource files are not uploaded.

iCloud is provided by Apple and is subject to Apple's Privacy Policy. Turning sync off stops future syncing on that device but does not automatically erase data already stored in iCloud.

5. Reminders and notifications

If you choose to schedule a reminder, SlipNote asks for notification permission and creates a local notification on your device. Reminder content and timing are handled using Apple's notification system. You can change notification permission in system Settings.

6. Purchases and subscriptions

Purchases, subscriptions, billing, refunds, and payment credentials are handled by Apple. SlipNote does not receive your payment card details. StoreKit provides the app with the information needed to display products and determine whether an entitlement is active.

7. Sharing, export, and backups

Data leaves SlipNote only when you initiate an action such as sharing, exporting, saving a backup to Files, or enabling iCloud Sync. The destination you choose may apply its own privacy terms. Backup files can contain your card content and images, so store and share them carefully.

8. Analytics, advertising, and tracking

SlipNote does not include third-party advertising or analytics SDKs and does not perform cross-app tracking. We do not sell personal information. The app uses Apple services only as needed for features you request, including StoreKit and optional iCloud.

9. Website hosting

These static support pages do not contain advertising, analytics, tracking scripts, contact forms, or external fonts. They are hosted on GitHub Pages. GitHub may process connection information, such as IP addresses and browser details, to deliver and secure the website under the GitHub General Privacy Statement.

10. Retention and your controls

• You can edit or delete cards in the app.
• Deleted cards remain in Recently Deleted for up to 30 days unless permanently deleted sooner.
• You can turn off iCloud Sync; existing iCloud data may remain in your Apple Account.
• Uninstalling SlipNote removes its local app container, but copies in Files, device backups, iCloud, or places you shared them to may remain.
• Support emails are retained only as reasonably needed to answer requests, maintain support records, prevent abuse, or meet legal obligations. You may ask us to delete support communications, subject to applicable obligations.

11. Children

SlipNote is a learning tool that may be used by children with parent, guardian, or school guidance. It does not require a SlipNote account, show targeted advertising, or intentionally collect a child's name, location, contacts, or identifiers. Users should avoid placing unnecessary personal information in card content or support emails. A parent or guardian may contact us regarding information sent through support.

12. Security, changes, and third-party links

We use platform security features and minimize data transmission, but no storage method is completely secure. External sites linked from these pages are governed by their own policies. We may update this policy when the app or legal requirements change; the date at the top will show the latest revision.