Sprogeny

Independent Project Disclaimer

Sprogeny is an independent, personal project. It is not affiliated with, endorsed by, or sponsored by Spotify AB or any of its subsidiaries. Spotify is a registered trademark of Spotify AB. All Spotify trademarks, logos, and brand names referenced on this site are the property of their respective owners and are used solely for identification purposes.

Use of the Spotify Platform

Sprogeny accesses your Spotify data exclusively through the official Spotify Web API, in accordance with the Spotify Developer Terms of Service. No proprietary code, non-public APIs, reverse-engineered endpoints, or unauthorized intellectual property from Spotify is used in this application.

Authentication & Credentials

When you sign in, you are redirected to Spotify's own login page. Your Spotify username and password are entered directly on Spotify's servers — Sprogeny never sees, receives, or stores your Spotify password.

Authentication uses Spotify's industry-standard OAuth 2.0 flow. After you grant permission, Spotify issues a temporary access token that allows Sprogeny to perform the actions you authorized. This token expires automatically and can be revoked at any time from your Spotify account apps page.

Information Collected

Sprogeny requests only the minimum Spotify permissions needed to function:

• Playlist data — names, track listings, and metadata for playlists you select as sources. This data is used in-memory to generate your blended playlists and is not stored after your session ends.
• Display name — used to identify your account during the session. Not stored permanently.
• Hashed track records — a non-reversible hash of tracks used in previous blends, stored to prevent duplicates. No raw track names, playlist contents, or user IDs are retained.

Sprogeny does not access or collect:

• Your listening history or play counts
• Your saved or liked tracks
• Your email address or profile details
• Your payment or subscription information

Session & Cookies

Your session is maintained through an encrypted cookie. This cookie contains only session identifiers — no personal data, no tracking data, and no advertising cookies. Sprogeny uses a self-hosted, cookieless analytics tool (Matomo) to count page views. No cookies are set for analytics, no personal information is collected, and no data is shared with third parties.

No Warranties

Sprogeny is provided "as is" without warranties of any kind, express or implied. There is no guarantee of availability, accuracy, or fitness for a particular purpose. The service may be modified, suspended, or discontinued at any time without notice.

Your Responsibilities

By using Sprogeny, you agree that you have an active Spotify account and that your use of Sprogeny complies with Spotify's Terms of Service. You are responsible for the playlists you create and the content within them.

Changes to These Terms

These terms may be updated from time to time. Continued use of Sprogeny after changes constitutes acceptance of the updated terms. The "Last updated" date at the top of this page reflects the most recent revision.