Privacy Policy

Last updated: April 28, 2026

Important: Media files such as videos, photos, and extracted frames are stored only in your browser's IndexedDB. This data is never sent to our servers.

1. Information We Collect

We collect the following information when you create an account.

  • Email address— used for authentication and login
  • Display name (optional)— only if you set one in profile settings

Guest users (not registered) send no information to our servers.

2. Information We Do Not Collect

The following data is never sent to or stored on our servers.

  • Uploaded videos and photos
  • Extracted frame images
  • Library project data
  • Watermark logo images

All of this data is stored in your browser's local storage (IndexedDB) and never leaves your device.

3. How We Use Your Information

Collected information is used only for the following purposes.

  • Account authentication and login management
  • Displaying your profile name
  • Statistical analysis to improve the Service (in non-identifiable form)

4. Sharing with Third Parties

We do not sell, share, or provide your personal information to third parties, except as required by law.

5. Third-Party Services

This Service uses the following third-party services.

Supabase— authentication and database (stores email address and display name)

Please refer to each company's website for their privacy policies.

6. Data Deletion

To delete your account, please contact us at the address below. Local browser data can be deleted from the profile settings page using "Delete all data".

7. Contact

For questions or requests regarding privacy, please contact us.

higutatsu3@icloud.com

Privacy Policy | STIL.