App license and purchases

Terms of Use

Effective and last updated: October 21, 2026

Your use of SlipNote is also governed by Apple's Standard Licensed Application End User License Agreement (Standard EULA). If these terms conflict with the Standard EULA, the Standard EULA controls.

1. Using SlipNote

SlipNote is licensed, not sold, for personal or permitted educational use on supported Apple devices. You are responsible for your device, Apple Account, card content, backups, and compliance with applicable school, copyright, privacy, and other rules.

2. Learning content

SlipNote provides tools and optional learning materials to support study and review. Recognition output, answers, explanations, schedules, and learning materials may contain errors or may not fit a particular curriculum. They are not a substitute for a teacher's judgment. Review content before relying on or sharing it.

3. Your content

You retain responsibility for content you add. Do not use SlipNote to store or share content you do not have permission to use, unlawful material, or unnecessary sensitive personal information. You grant no general ownership of your card content to us.

4. Purchases

  • Grade packs: Non-consumable, one-time purchases that unlock the specified grade only.
  • SlipNote Pro Lifetime: A non-consumable, one-time purchase that unlocks Pro features supported by the purchased app version and service availability.
  • SlipNote Pro Monthly and Yearly: Auto-renewable subscriptions providing the same Pro feature set for different billing periods.

Prices and availability are shown by the App Store and can vary by storefront. Apple processes payment and restoration. Refund requests are handled by Apple.

5. Auto-renewable subscriptions

Payment is charged to your Apple Account when the purchase is confirmed. A subscription renews automatically unless you cancel it through your Apple Account subscription settings before the end of the current period. Cancellation stops future renewal and does not normally end access before the paid period expires. Apple controls billing timing, renewal, taxes, currency, refunds, and account management.

6. Availability and changes

Features may depend on device capabilities, operating-system versions, network access, iCloud, and App Store availability. We may improve, modify, or discontinue features where reasonably necessary. We do not guarantee uninterrupted or error-free operation.

7. Disclaimer and liability

To the extent permitted by law, SlipNote is provided "as is" and "as available." We do not guarantee specific grades, examination results, learning outcomes, recognition accuracy, or uninterrupted synchronization. Rights that cannot legally be excluded remain unaffected.

8. Changes and contact

We may update these terms when features, purchases, or legal requirements change. The updated date will appear at the top. Questions can be sent to songyufei@gmail.com.