Privacy without an account requirement.
What data Kohlrabi collects and what happens to it. You can use the app without signing in — when you stay signed out, your workout data remains on the device and in the browser you’re using. The short version is in the cards below; the full policy follows.
Last updated: September 14, 2026.
Signing in is optional
An account is only needed if you choose cross-device sync. The basic workout tracker works without one.
Your device comes first
Signed-out workout data is stored locally in your browser. Clearing browser data or changing devices can remove it, so the app includes a data export for backups.
You control deletion
Data settings include export and delete-all controls. Signed-in users can also sign out and continue using the app locally.
Plain-language policy
The full policy below covers service providers, what information sync requires, retention, and how to request account deletion.
The full policy
Data that stays on your device
Without an account, everything you log is stored locally in your browser. It never leaves your device. Clearing browser data, switching browsers, or changing devices can remove it, so use the Settings export for backups.
Account information
If you create an account, we store your email address to sign you in and operate sync. Sign-in is passwordless, using a code or link sent to that address.
Synced workout data
When you’re signed in, your workouts, programs, settings, and preferences are stored with our database provider so they sync across your devices.
How we use your data
Your data is used to operate the service: signing you in, syncing your workouts across devices, and responding to messages you send us. That’s it — no advertising profiles, no data brokerage.
What we don’t do
We don’t sell your personal data. We don’t run third-party ad trackers. No workout data is given to any AI model for training. See the AI disclosure page for exactly how AI is and isn’t used.
Service providers
We use third parties for hosting, database and authentication, and sign-in email delivery. They process your data only to provide those services. Donations are handled entirely by the payment provider; we don’t see or store your card details.
Bug reports
If you report a bug through the beta page, whatever you include in the report is shared with us as a GitHub issue or by email. Please don’t include passwords or other sensitive information.
Coaching inquiries
Messages sent through the coaching inquiry form are used to respond to you about training. They aren’t added to any marketing list.
Data retention
Local data stays until you delete it. Account and synced data is kept while your account exists. If you delete your account, we remove your synced data within a reasonable time; backups may persist briefly.
Your controls
Settings includes one-tap JSON export and delete-all with confirmation. You can sign out anytime and keep using the app locally. To delete your account entirely, contact us (see below).
Security
We use reasonable technical and organizational measures to protect your data, including encrypted connections and access controls. No method of transmission or storage is completely secure.
Children
The service isn’t directed at children under 13, and we don’t knowingly collect their personal data.
Cookies and local storage
The site and app use browser storage to keep you signed in, remember your theme, and save your workouts locally. We don’t use third-party advertising cookies.
Changes to this policy
Material changes will be posted on this page with a new last-updated date.
Contact
Questions about privacy, or a deletion request? Send a message through the inquiry form on the training page.