LeanLens provides AI-assisted body composition estimates and fitness guidance. This policy explains what we collect, how we use it, and your choices.

Data we process

• Photos you upload: used to generate analysis outputs.
• Optional profile inputs: height, weight, age, gender, and activity level (if provided) to personalize outputs.
• Account data (if you sign in): email and basic profile settings needed to provide login and saved progress features.
• Usage telemetry: basic app events and performance timing metrics to improve reliability and speed. We avoid sending sensitive health estimates to analytics.

Third-party processing

• AI processing: when you run an analysis, your photos and optional profile inputs are sent to our AI processing provider to generate results.
• Authentication & database: we use Supabase for login and for storing saved progress (if you opt in by signing in).
• Hosting: the app is hosted on Vercel.
• Analytics: our main website may use Google Analytics for aggregate usage insights. The in-app host (`app.leanlens.ai`) disables ads and analytics scripts for performance and privacy.

Retention

• Photos: LeanLens does not store uploaded photos in our database after analysis completes. Photos are transmitted to the AI provider to generate results.
• Saved progress: if you save results, snapshots and check-ins are stored in our database until you delete them or delete your account.
• Operational logs: we may keep limited security and performance logs to protect the service and improve reliability.

Your choices

• AI consent (mobile apps): in our iOS and Android apps, you’ll be asked for consent before your photos are sent to the AI provider. You can revoke consent any time in Profile → Privacy & data.
• Account deletion: you can delete your account in the app (Profile → Privacy & data) or via the web page at /delete-account.

Contact

Questions or requests? Email leanlensai@gmail.com.

For a plain-language product overview, see Privacy-First AI Photo Analysis.