z-fit Privacy Policy
Last updated: June 10, 2026
Contact: cameronziny@gmail.com
Overview
z-fit ("we," "our," or "us") is a workout tracking app. This policy explains what data we collect, how we use it, and your choices.
Information We Collect
Account information (optional)
If you sign in, we collect information through our authentication provider, Clerk, such as your email address and basic profile information (e.g. name, if provided via Google sign-in).
Workout and fitness data
When you use the app, we store workout-related data including:
- Workout sessions (exercises, sets, reps, weights)
- Rest timers and completion status
- Weight preferences (kg or lbs)
- Training history and progression data
- Strength assessments you enter during workout setup
Anonymous use
You can use z-fit without signing in. In that case, workout data may be associated with an anonymous identifier stored on your device.
Device and app data
We store preferences locally on your device (e.g. active workout state, settings) to keep the app working properly.
How We Use Your Information
We use your data to:
- Provide workout tracking and history
- Suggest weights based on your training data
- Sync progress across devices when signed in
- Improve app reliability and performance
We do not sell your personal information or use it for advertising.
Third-Party Services
We use trusted third-party services to operate the app:
| Service | Purpose |
|---|---|
| Clerk | Account sign-in and authentication |
| Convex | Cloud database and app backend |
These providers process data on our behalf according to their own privacy policies.
Data Retention
Workout data is retained while you use the app. If you delete your account or request deletion, we will delete associated personal data within a reasonable timeframe.
Your Choices
- Use without an account — sign-in is optional
- Sign in — to save progress across devices
- Delete account — contact us at cameronziny@gmail.com to request deletion
Children's Privacy
z-fit is not directed at children under 13. We do not knowingly collect data from children.
Security
We use industry-standard measures to protect your data, including encrypted connections (HTTPS) and secure authentication.
Changes
We may update this policy from time to time. Changes will be posted on this page with an updated date.
Contact
Questions about this policy: cameronziny@gmail.com