What we collect
LIFTS collects only the data you provide during workouts:
- Workout logs (exercises, sets, reps, weights)
- Body measurements (if you choose to log them)
- Personal records and training history
- Custom exercises you create
- Training program preferences
- Account info (email address) if you sign up
How we store your data
Your workout data is stored in two places:
- Locally on your device - Your browser's localStorage acts as a fast cache and offline fallback. This data never leaves your device unless you create an account.
- Cloud (Supabase) - If you sign up, your data syncs to a secure Postgres database hosted by Supabase with row-level security. This lets you access your workouts across devices.
Anonymous users (no account) run entirely on localStorage. Nothing is sent to any server.
AI coaching
LIFTS uses Google's Gemini AI to power coaching features. When you use the AI coach:
- Your recent workout data and question are sent to Google's API to generate a response
- We do not store AI conversations long-term
- Google processes data per their API terms of service - data sent via the API is not used to train their models
Analytics
We use Vercel Analytics to understand how the app is used (page views, performance metrics). This is privacy-friendly, cookie-free analytics that does not track individual users.
Data deletion
You can delete your data at any time:
- Local data: Clear your browser's localStorage for lifts.fitness
- Cloud data: Contact us at privacy@lifts.fitness and we'll delete your account and all associated data within 30 days
Cookies
LIFTS uses only essential cookies for authentication (session tokens). We do not use tracking cookies, advertising cookies, or any third-party cookies.
Changes
We may update this policy. Significant changes will be noted on this page with an updated date. Continued use of LIFTS means you accept the current policy.
Contact
Questions about privacy? Email us at privacy@lifts.fitness