Privacy

Updated 22 October 2026.

10khours is a personal practice record. Without signing in, your skill and hours stay in this browser. Clearing site data can remove them.

When you sign in with Google, we receive your Google account identifier and verified email address. We use these to keep your records attached to your account. We do not request access to your Gmail, contacts, or Google Drive.

Signed-in records are stored using Cloudflare Workers and D1: your skill, totals, confirmed changes, timestamps, and completion date. Google handles sign-in. These providers may process data outside your country. Your practice records are not public.

We use an essential secure session cookie to keep you signed in for up to 30 days. Local browser storage keeps guest records and a recovery copy of unsynced changes. We do not run advertising or analytics trackers.

Use Export records to download your data. We keep cloud records until you request deletion or the service closes. For access, deletion, or privacy questions, contact paulesallton839@gmail.com from your account email. Infrastructure backups may retain deleted records briefly.

Cloud saving protects against clearing your browser, but no service can promise permanent availability. We recommend occasional exports for a personal backup.