Open Piano
Privacy
Open Piano collects no personal data and contains no advertising, analytics, or tracking SDKs.
What stays on your device
Everything you make in the app stays on your iPhone, in the app's own container, and is never uploaded.
The Bench
The Bench screen fetches a public list of proposed changes from https://openforx.polyfeeds.dev. Like any web request, our server sees your IP address in transit; we do not store it with your activity or use it to identify you. The app sends nothing else. Saying “me too”, suggesting a change, or underwriting one happens on this website, where an anonymous random identifier in a cookie counts you once. A suggestion contains only the text you type, plus an email address if you choose to give one so we can reply. We do not sell or share this information.
Underwriting
Underwriting a change happens on the web through Stripe, never inside the app. The app never handles payment details. If you choose to put a name on a receipt, that name is public inside the app and on this site; you can ask us to remove it at any time.
Children
The app is suitable for all ages and does not knowingly collect personal information from anyone.
Contact
Last updated 2026-09-21.