What happens to your photo.

The short version

Your palm photo is sent for one tracing request and deleted within 24 hours. It is never used to identify you, never turned into a biometric template, and never kept to improve detection. If you join the launch list, we use your email address only to tell you when PalmMuse is available in the App Store.

The maps you make in the app — the lines you traced and confirmed, the labels and notes you added, and their dates — are stored on your device only. They are never uploaded to us. The card you export carries the tracing, not the photograph of your hand.

What we collect

• The palm photo you choose to scan. Cropped on your device before it is uploaded, and sent under a random analysis ID rather than an account identifier.
• The temporary detection result. The visible crease coordinates, confidence figures and visual observations are stored under a random analysis ID so the app can complete the mapping flow.
• Basic technical and product events. These include request timestamps, error logs, rate-limit counters, the screen or tool used and coarse score bands. Analytics never includes a palm photo, traced geometry, map note or analysis ID.
• An email address you enter on this website, if you ask us to send the App Store link when PalmMuse launches.

We do not ask for your name, birthday, address, or phone number. Purchases are handled by Apple; we never see your payment details.

How long we keep it

• The original photo: deleted within 24 hours of analysis. There is no photo archive.
• The temporary detection result: kept for up to 2 hours, then deleted from the service. The dated map you save is a separate copy stored on your device.
• A launch-list email address: kept until we send the launch notice, or deleted sooner if you ask us.

What we never do

• We never match your palm against you, against another user, or against any database.
• We never create or store a biometric identifier or authentication template from your hand.
• We never sell your data, and we never share it with advertisers or data brokers.
• We do not keep your photo to train or improve the tracing service.

Who processes your data

The cropped photo is processed through OpenAI's API with provider storage disabled. Temporary detection results and rate-limit counters use Upstash Redis, and the service runs on Vercel. Google Analytics receives limited product events through a random app identifier. Apple processes Studio Pro purchases. These providers do not receive the Palm Maps stored in your Library.

Your choices

Deleting PalmMuse removes the Palm Maps stored on that device and its random analytics identifier. The temporary server result expires automatically. To remove a launch-list address, email us from that address and ask to be removed.

Children

PalmMuse is not directed at children and is not intended for anyone under 13.

Changes

If this policy changes in a way that affects what we collect or how long we keep it, we will update the date at the top and describe the change in the app's release notes.