Privacy policy

AltoPaint has no accounts, no advertising, and no tracking, and it never sells or shares your information for advertising. To keep the app working well, it sends a small amount of anonymous usage and diagnostic data to two services, described below. None of it is linked to your name, email, or Apple Account.

What stays on your device

Your paintings, and the paint left in the mixing tray, are saved on your device.
A painting only leaves your device when you choose to share it, using the system share sheet.

Usage analytics

AltoPaint uses Google Analytics for Firebase to count how the app is used: for example, which screens are opened, which features are used, and how long a painting session lasts. Firebase assigns a random app instance identifier, and Google may infer an approximate region from your IP address. This data is used only to understand and improve AltoPaint, and is not used for advertising or tracking. Firebase's handling of this data is described in Firebase's privacy information.

Crash reports, performance, and errors

AltoPaint uses Sentry to report crashes and unexpected errors (a painting that fails to save or open, for example), along with performance measurements and diagnostic logs from the app. A report can include your device model and system version, the state of the app's screens when the problem happened, and your IP address. These reports are used only to find and fix problems. Sentry's handling of this data is described in Sentry's privacy policy.

If you have chosen to share analytics with Apple, Apple may also provide us with anonymous crash reports.

Feedback

When you send feedback from inside the app, the message you write is sent to us through Sentry, together with the most recent error from that session, if there was one. The app does not ask for or attach your name or email address.

Permissions

AltoPaint does not ask for access to your camera, microphone, photos, contacts, or location.

Children

AltoPaint does not knowingly collect personal information from children. The usage and diagnostic data above is collected the same way for everyone and is not used to identify anyone.

Changes

If this policy changes, the new version will be posted on this page with a new date.

Contact

AltoPaint is made by High Line Labs LLC. Questions about privacy can go to support@highlinelabs.co.

Last updated October 21, 2026