LETSBURNFIT

Privacy Policy

Last updated: September 11, 2026

LetsBurnFit ("we", "our", or "us") operates the LetsBurnFit mobile application and website. This Privacy Policy explains how we collect, use, store, and protect your personal information when you use our services.

1. Information we collect

Account information: When you create an account, we collect your email address, name, age, gender, height, and weight.

Fitness profile: We collect your fitness level, goals, injuries or limitations, available equipment, preferred workout days, session length, diet preference, and dietary restrictions. This information is used to generate your personalized workout and meal plans.

Body composition data: The body composition estimate (body fat percentage, lean mass, BMI, BMR and visceral fat) is calculated from the height, weight, age, sex and tape measurements you enter, using the US Navy circumference method and BMI formulas. These are mathematical estimates, not medical measurements. If you take body photos during a scan, they are transmitted to Anthropic's Claude API for a single automated check that a full body is in frame; the photos are not used to compute your results, are not stored on our servers, and are not retained by Anthropic under its API data policy.

Food photos: When you use the food photo scanner, the photo you take or choose is transmitted to Anthropic's Claude API to identify the food and estimate calories, protein, carbohydrates and fat. The estimate is saved to your account; the photo itself is not stored on our servers.

Activity data: We collect workout logs, cardio sessions, exercise performance data, meal logs, the daily "followed the plan?" check-in, weigh-ins and progress data that you enter into the app.

Feedback you send us: If you use "Send feedback" in the app, we store your message, the category you chose, and basic device details (platform, app version, and the screen you were on) so we can reproduce problems. If you allow replies, the message is emailed to us with your account email address as the reply address so we can answer you directly. Feedback is private: it is never shown to other members.

Apple Health (iPhone only, and only if you connect it): If you choose to connect Apple Health in Profile → Health Tracking, LetsBurnFit reads five things: your step count, active energy burned, heart rate, body mass, and the workouts recorded on your device — including anything logged by an Apple Watch. We use them for one purpose: to make your calorie target and your streak reflect activity you actually did rather than only what you typed. This is read-only. LetsBurnFit never writes anything to Apple Health, and the app is built without permission to do so. Health data is read on your device and is not uploaded to our servers, not shared with any third party, and never used for advertising, marketing or any form of data mining. Connecting is entirely optional and the app works without it; you can revoke access at any time in iOS Settings → Privacy & Security → Health → LetsBurnFit, and the app returns to using only what you enter. On Android and on the web, LetsBurnFit does not read from Health Connect, Google Fit, or any device sensor.

AI coaching conversations: Messages you send to the AI coach are processed to provide personalized fitness and nutrition guidance.

Payment information: Subscription payments are processed by Google Play (Android), Apple App Store (iOS), or Stripe (web). We do not directly store your credit card number or payment credentials. We receive confirmation of your subscription status.

2. How we use your information

We use your information to:

• Generate personalized workout plans tailored to your goals, equipment, and schedule
• Create custom meal plans with macronutrient calculations based on your body composition
• Provide AI coaching responses relevant to your fitness profile and history
• Calculate body composition estimates from your physical measurements
• Track your fitness progress over time, including personal records and body scan history
• Generate monthly progress reports summarizing your training and nutrition data
• Send transactional emails (account verification, subscription confirmations)
• Send optional marketing emails (workout tips, progress updates) with your consent
• Improve our services and fix technical issues

3. Data storage and security

Your data is stored using Supabase, which provides enterprise-grade security with encryption at rest and row-level access controls. All data transmitted between your device and our servers is encrypted using TLS (Transport Layer Security). Only you can access your personal fitness data through your authenticated account.

While we implement industry-standard security measures, no method of electronic transmission or storage is 100% secure. We cannot guarantee absolute security of your data.

4. Third-party services

We use the following third-party services to provide our app:

• Supabase — database hosting and user authentication
• Anthropic (Claude API) — food photo analysis, the body-photo framing check, and meal plan generation
• Groq — generates the AI coach's replies from the messages you send it and your fitness profile
• Resend — email delivery service
• Google Play / Apple App Store — subscription payment processing (mobile)
• Stripe — payment processing (web)

These services process data in accordance with their own privacy policies. We do not sell, rent, or share your personal data with third parties for advertising or marketing purposes.

5. Health and medical disclaimer

6. Data retention

We retain your personal data for as long as your account is active. If you delete your account, all associated data is permanently removed from our systems, including your profile, workout logs, body scan history, meal plans, coach conversations, and progress data. This deletion is irreversible.

We may retain anonymized, aggregated data (which cannot identify you) for analytics and service improvement purposes.

7. Your rights

You have the right to:

• Access your personal data stored in the app
• Correct inaccurate information through your profile settings
• Delete your account and all associated data (Profile → Delete Account)
• Opt out of marketing emails using the unsubscribe link in any email
• Withdraw consent for data processing at any time by deleting your account
• Request information about what data we hold about you

8. Email communications

We send two types of emails:

• Transactional emails: Account verification, subscription confirmations, and security alerts. These cannot be opted out of while your account is active.
• Marketing emails: Workout tips, progress updates, fitness guidance, and feature announcements. You can unsubscribe at any time using the link at the bottom of any marketing email, or by adjusting notification preferences in the app.

9. Children's privacy

LetsBurnFit is intended for users aged 18 and older. We do not knowingly collect personal information from anyone under the age of 18. If we learn that we have inadvertently collected data from a user under 18, we will delete that data promptly. If you believe a minor has provided us with personal information, please contact us immediately.

10. International data transfers

Your data may be processed and stored on servers located outside your country of residence. By using LetsBurnFit, you consent to the transfer of your information to these locations. We ensure appropriate safeguards are in place regardless of where your data is processed.

11. Changes to this policy

We may update this Privacy Policy from time to time. We will notify you of significant changes through the app or via email. The "Last updated" date at the top of this page indicates when the policy was last revised. Your continued use of LetsBurnFit after changes constitutes acceptance of the updated policy.

12. Contact us

If you have questions about this Privacy Policy, your data, or wish to exercise any of your rights, contact us at:

Email: privacy@letsburnfitness.com

Website: letsburnfitness.com