LensFit ("we", "our", or "the app") is a fitness tracking and AI-powered analysis application developed by Anthony Granier. This Privacy Policy explains how we collect, use, store, and protect your information when you use LensFit.

By using LensFit, you agree to the collection and use of information in accordance with this policy. If you do not agree, please do not use the app.

1. Data We Collect

Profile Information

When you set up your profile, you may provide:

• Body weight and height
• Training level (beginner, intermediate, advanced)
• Fitness goal (muscle gain, fat loss, strength, etc.)
• Morphology details (limb lengths, body proportions)

Social Profile (Optional)

If you choose to create a social profile via Sign in with Apple, we collect and store on Supabase:

• Apple ID and email (optional)
• Username and display name
• Profile photo
• Bio (short text description)
• XP points, streak, and rank
• Body stats: age, height, weight, sex, fitness goal

Workout Data

When you log workouts, we store:

• Exercises performed
• Sets, repetitions, and weight used
• Workout date, time, and duration
• Stopwatch and timer data
• Rest periods and session notes

Muscle Battery Data

LensFit tracks the estimated fatigue and recovery level of each muscle group using our Battery Engine system. This includes:

• Muscle fatigue levels (drain percentages)
• Recovery status per muscle group
• Battery history over time

Scan Data (AI Features)

When you use the Scan features (Machine, Exercise, or Body), we process:

• Photos taken with your camera or imported from your photo library
• AI analysis results (machine identification, form analysis, physique assessment)
• Body fat percentage estimates and physique scores
• Scan history (previous scan results)

Analytics and Insights Data

• 1RM (one-rep max) progression calculations
• Training volume and frequency statistics
• Muscle balance and training distribution
• Streak and consistency tracking
• XP points and rank progression

2. Data Storage & Infrastructure

This means:

• Your account, authentication, and social profile data are stored securely on Supabase (AWS)
• All data is transmitted over encrypted HTTPS connections
• Workout data and local preferences are also stored on your device via Apple's SwiftData framework
• You can delete your account and all associated data at any time from Settings → Account → Delete Account
• Your data is never sold to third parties

3. Third-Party Services

Supabase (AWS)

LensFit uses Supabase to manage user accounts, authentication, and social profile data. Supabase is hosted on Amazon Web Services (AWS). All data is transmitted over HTTPS and stored securely. Please refer to Supabase's Privacy Policy for details on how they handle data.

Google Gemini API (AI Scan Features)

When you use any Scan feature (Machine, Exercise, or Body), your photo is sent to Google's Gemini API for AI-powered analysis.

• What is sent: The photo you take or import, along with a text prompt describing the analysis requested
• What is received: A structured analysis result (machine details, form feedback, or physique assessment)
• Our retention: We do not store your photos on any external server. The analysis result is saved locally on your device

Please refer to Google's Privacy Policy for details.

Apple Sign In

Used for account authentication. We only receive the information you authorize (name and email). Your Apple ID credentials are never stored by LensFit. Please refer to Apple's Privacy Policy for details.

No Other Third Parties

LensFit does not integrate any advertising SDKs, third-party analytics tools, social media trackers, or data brokers.

4. How We Use Your Data

Your data is used exclusively to provide and improve your experience within the app:

• Profile data: To personalize AI scan analysis and provide recommendations
• Workout data: To track your training progress and display insights
• Muscle battery data: To show muscle fatigue and recovery status on the Body Map
• Scan photos: To send to Google Gemini API for analysis only
• Social profile data: To display your rank and profile to other LensFit users, only if you have created a social profile

We do not use your data for advertising, marketing, profiling, or any purpose other than the direct functionality of the app.

5. Data Sharing

We do not sell, rent, trade, or share your personal data with any third party, except in the following limited circumstances:

• Google Gemini API: Photos are sent for AI analysis when you initiate a scan
• Apple: Payment processing for subscriptions is handled entirely by Apple
• Social features: If you create a social profile, your username, rank, XP, and bio will be visible to other LensFit users
• Legal requirements: We may disclose information if required by law or governmental authority

6. Device Permissions

Camera

Required to take photos for the Scan features. If you deny access, you can still import photos from your library.

Photo Library (Private Access)

Used to import photos for AI scan analysis. LensFit uses Apple's Private Access mode — the app can only access the specific photos you select, not your entire library.

Notifications

Used to deliver timer alerts, streak reminders, and training reminders. All notifications are local. You can disable them at any time in iPhone Settings.

7. Your Rights

Right to Access

All your data is stored locally on your device. You can view it at any time within the app and export your workout data as a CSV file from Settings.

Right to Rectification

You can edit your profile information, workout entries, and other data directly within the app at any time.

Right to Deletion

You can delete all your data at any time using the "Delete All Data" button in Settings. If you have a social profile, you can permanently delete your account and all associated data from Settings → Delete Account. This action is immediate and irreversible.

Right to Data Portability

You can export your workout data in CSV format using the "Export Workout Data" feature in Settings.

To exercise any of these rights, contact us at contact@lensfit.app.

8. Data Retention

• Local data: Retained until you delete it manually or uninstall the app
• Social profile data: Retained until you delete your account
• Scan photos: Sent to Google Gemini API for processing only — not retained by LensFit
• Subscription data: Managed entirely by Apple

9. Data Security

• All data is stored locally on your device, protected by your device's security (Face ID, Touch ID)
• Photos sent to Google Gemini API are transmitted over encrypted HTTPS connections
• We do not operate any servers or databases, eliminating the risk of server-side data breaches
• Sign in with Apple authentication is handled entirely by Apple — we never see your Apple ID password

10. Children's Privacy

LensFit is not intended for children under the age of 16 in the European Union or under the age of 13 in other jurisdictions. We do not knowingly collect personal information from children. If you believe your child has provided data through the app, please contact us at contact@lensfit.app.

11. International Data Transfers

When you use the Scan features, your photo is transferred to Google servers in the United States for AI processing. Google participates in data protection frameworks and implements appropriate safeguards for international data transfers. For more information, please refer to Google's Privacy Policy.

12. iCloud Sync

LensFit uses iCloud CloudKit to automatically sync your workout data across your devices. This data is stored in your personal iCloud account and is never accessible to us. You can disable iCloud sync at any time in iPhone Settings → Apple ID → iCloud → LensFit.

13. Community Guidelines & Bio Moderation

What's Prohibited in Bios

Your bio must not contain any of the following:

• Nudity or sexual content of any kind
• Hate speech, racial or ethnic slurs, or discriminatory language
• References to violence or self-harm
• Political extremism, Nazi imagery, or fascist content
• Spam, promotional links, or commercial solicitation
• Personal information of third parties (names, addresses, phone numbers)
• Content that harasses, threatens, or intimidates other users

How Bios Are Moderated

Bios are subject to automated review and manual moderation. LensFit reserves the right to remove any bio that violates these guidelines without prior notice. Accounts that repeatedly breach these guidelines may be suspended or permanently banned.

How to Report Abuse

If you see a bio or profile that violates these guidelines:

• Tap the ··· menu on the user's profile and select "Report"
• Or contact us directly at contact@lensfit.app with the subject line "Abuse Report"

All reports are reviewed within 48 hours. We take every report seriously and will take appropriate action where guidelines have been violated.

14. Changes to This Policy

We may update this Privacy Policy from time to time. The "Last updated" date at the top of this page will be revised accordingly. Continued use of the app after changes constitutes acceptance of the updated policy.

15. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or your personal data, please contact us: