Privacy Policy

Last updated: September 18, 2026

The short version: the app collects nothing. It has no accounts, no analytics and no telemetry. Your hands, stats and study data live in files on your own computer and never leave it. The app makes exactly one kind of network call — a launch-time check for a new version, which two parts of the interface each request, so you may see more than one request for the same static file — and that call sends none of your data.

1. The application

2. This website and the update endpoint

3. Email

If you email us, we'll have your email address and message; we use them only to reply, and we don't add you to any list.

4. Future changes

If we ever add features that process personal data (for example, license activation for paid plans — which would validate a license key and machine identifier), this policy will be updated first and the data collected will be the minimum required for the feature.

5. Contact