Terms of Use

Last Updated: May 28, 2026

1. Acceptance of Terms

By accessing and using KuaFu, you accept and agree to be bound by the terms and provision of this agreement. If you do not agree to these terms, please do not use KuaFu.

2. Use License

Permission is granted to use KuaFu for personal, non-commercial purposes. This is the grant of a license, not a transfer of title, and under this license you may not:

• Modify or copy the app's proprietary code
• Use the materials for any commercial purpose without explicit permission
• Attempt to decompile or reverse engineer any software contained in KuaFu
• Remove any copyright or other proprietary notations from the materials

3. In-App Purchase

KuaFu offers a one-time lifetime Pro purchase. By purchasing, you agree to:

• Product: KuaFu Pro Lifetime Unlock (io.mua.KuaFu.premium.lifetime)
• Type: Non-consumable, one-time purchase — not a subscription
• Pricing: Price displayed in the app at time of purchase (varies by region)
• Billing: Payment is processed by Apple through your Apple ID account
• Restore: You may restore your purchase on other devices signed in with the same Apple ID
• Refunds: Refunds are subject to Apple's refund policy

4. Pro Features

The lifetime Pro purchase includes:

• Removal of the KuaFu brand watermark from exported videos

All other core editing features are available without purchase.

5. User Content

You retain all rights to any videos and FIT files you import into KuaFu. We do not store, transmit, or access your content except as necessary to provide the service on your device. You are solely responsible for ensuring you have the right to use and share any content you process with KuaFu.

6. FIT File Compatibility

KuaFu supports FIT files from a wide range of fitness devices and apps. However, FIT file formats vary by manufacturer and device. KuaFu is provided on an "as is" basis with respect to FIT compatibility:

• Not all FIT files contain every data field (speed, altitude, GPS, distance, etc.)
• Heart rate, power, and cadence are not currently supported as overlay metrics
• Time alignment between video and FIT data may require manual adjustment
• We do not guarantee accurate parsing or display for every FIT file variant

7. Photo Library Access

KuaFu requires photo library access to import videos and save exported results. By using KuaFu, you acknowledge that:

• You grant the app permission to read selected videos from your photo library
• You grant the app permission to save exported videos to your photo library
• You may revoke these permissions at any time in iOS Settings

8. Privacy

Your use of KuaFu is also governed by our Privacy Policy. Please review our Privacy Policy to understand our practices regarding your data.

9. Disclaimer

The materials in KuaFu are provided on an "as is" basis. KuaFu makes no warranties, expressed or implied, and hereby disclaims and negates all other warranties including without limitation, implied warranties or conditions of merchantability, fitness for a particular purpose, or non-infringement of intellectual property or other violation of rights.

KuaFu overlay data is derived from FIT files you provide. We do not guarantee the accuracy of speed, time, distance, altitude, or GPS data displayed in overlays. Always verify critical metrics independently.

10. Limitations

In no event shall KuaFu or its suppliers be liable for any damages (including, without limitation, damages for loss of data or profit, or due to business interruption) arising out of the use or inability to use KuaFu, even if KuaFu or an authorized representative has been notified of the possibility of such damage.

11. Revisions

KuaFu may revise these terms of use at any time. We will notify you of material changes by updating the "Last Updated" date on this page. By continuing to use KuaFu after changes are posted, you agree to be bound by the then current version of these terms of use.

© 2026 KuaFu. All rights reserved.