Last updated: April 17, 2026
Contact
Questions, bug reports, takedown requests, or account/recording deletion:
We read every email and usually reply within a few days.
Privacy Policy
What we collect
- Nothing, unless you sign in. The harmonium itself runs entirely in your browser — you can play, record, and download without any account.
- If you use "Save to cloud": we sign you in with Google and store your name, email, and profile image as provided by Google OAuth, plus the audio recordings you choose to save.
- Settings: your volume, raga, theme, and keymap preferences are stored in your browser's
localStorageonly — never sent to our servers.
How we use it
- Your email identifies you so only you can see and delete your own recordings.
- Cloud recordings are served over public, unguessable URLs that expire automatically after 1 hour.
- We do not sell, rent, or share your data with advertisers or data brokers.
Third-party services
- Supabase — authentication and recording storage. Hosted in the EU. Privacy policy.
- Google OAuth — sign-in only. We receive your email, name, and avatar. Privacy policy.
- Cloudflare Pages — hosting and CDN. Server logs (IP, user agent) are kept briefly for abuse prevention. Privacy policy.
We do not use Google Analytics, tracking pixels, or ad networks on this site.
Your rights
- You can delete any individual cloud recording from the "My Recordings" dialog.
- You can request deletion of your account and all associated recordings by emailing webharmonium@gmail.com.
- EU/UK (GDPR) and California (CCPA) users have the right to access, correct, export, or delete their data — email us and we'll handle it within 30 days.
Cookies
We use one session cookie (set by Supabase) to keep you signed in. No advertising or tracking cookies.
Terms of Service
Use of the service
- Web Harmonium is a free musical instrument simulator, provided "as is" without warranty of any kind.
- You're welcome to use recordings made with it for any purpose, personal or commercial — you own what you record.
- Don't use the cloud storage feature to host content that is illegal, harassing, or infringes someone else's copyright. We may remove such content and revoke access.
Availability
- The service may change, have outages, or be discontinued at any time. Cloud recordings older than 1 hour (via shareable link) or beyond your personal quota (currently 5) may be deleted automatically.
- Download important recordings locally — the cloud copy is a convenience, not long-term storage.
Samples & attribution
The harmonium audio samples used by this site are CC0 (public domain). See the About panel on the main page for source credits. Any included web assets (Tone.js, Supabase client) are used under their respective open-source licenses.
Liability
To the maximum extent permitted by law, Web Harmonium and its operator are not liable for any damages arising from use of or inability to use the service, including lost recordings, data, or musical inspiration.
Changes
We may update these terms. Material changes will be reflected by updating the date at the top of this page. Continued use of the site constitutes acceptance.