LemonFit Privacy Policy
Effective date: June 6, 2026 · Last updated: August 21, 2026
LemonFit (the “Service”) values your privacy and complies with applicable privacy laws, including Korea's Personal Information Protection Act. This policy explains what information the Service collects and how it is used, stored, and deleted.
1. Information We Collect
| Category | Data | When Collected |
|---|---|---|
| Account | Email address, name (optional), Apple/Google sign-in identifier | Sign-up / sign-in |
| Diet | Food photos, food names, AI-analyzed calories and nutrients, meal logs | When logging meals |
| Health & fitness | Height, weight, heart rate and resting heart rate, VO₂ max, exercise sessions and intensity, calories burned, steps, and distance (when you grant Apple Health or Health Connect access) | Onboarding, health-data connection, workout tracking, and challenge participation |
| Location & running | Precise location, GPS route, distance, speed, pace, and live location/progress during group runs | While you start a run or join a group run, including while the screen is off |
| Gym linking | Phone number (when linking a OneMove gym membership) | Institutional subscription linking |
| Community, challenges & bookings | Nickname, profile photo (optional), friend relationships, posts/comments, challenge records (steps, running distance, diet score, etc.) and rankings, gym bookings and pass information | When you use each feature |
| Notifications & device | Firebase installation identifier and push registration data, device platform, and app version | When registering for push notifications or using the app |
| Payments | App Store or Google Play subscription receipts/purchase tokens, Stripe web checkout transaction details and email address (card and payment details are handled by each payment processor and never stored by the Service) | Subscription purchase |
Automatic collection: minimal service logs such as app version, device platform, access, and error data may be collected to keep the Service reliable. The Service does not collect advertising identifiers (IDFA/AAID) and does not track you across third-party apps or websites.
2. How We Use Your Information
- Identifying members, sign-in, and account management
- Providing AI diet analysis and calorie/nutrition logging
- Providing workout heart-rate reports, VO₂ max and cardiorespiratory-fitness trends, and energy-balance summaries
- Recording running routes, distance, speed, and pace, and showing live progress among group-run participants
- Running steps, running, and diet challenges, calculating rankings, and showing them on venue display screens
- Providing friends/community, gym-class booking, and pass-management features
- Verifying OneMove (partner gym) memberships and providing institutional subscription benefits
- Processing subscription payments and responding to support inquiries
- Sending service-related push notifications such as challenge updates (you can turn these off in your device settings at any time)
3. Apple Health (HealthKit) and Android Health Connect Data
The Service reads only the health data you authorize from Apple HealthKit or Android Health Connect, including height, weight, heart rate and resting heart rate, VO₂ max, steps, exercise sessions, distance, and total calories burned. We request only the data and history needed for a feature. VO₂ max values are measured or estimated by connected devices or test equipment and written to the health platform; LemonFit does not calculate them independently.
Health data is used solely to provide body and cardiorespiratory-fitness trends and diet, workout, and challenge features. It is never used for advertising or marketing and is not sold to third parties. You can revoke access at any time in your device's health-data permission settings.
4. Information Shared in Challenges and Group Runs
If you join a steps, running, or diet challenge run by your organization (such as a gym), your nickname, profile photo (if set), challenge records, and ranking may be shown to other members participating in the same challenge and on that organization's display screens. Joining a challenge is optional; if you do not participate, this information is not shared.
If you join a group run, your precise location, route, and progress may be visible during the active session to users who joined with the same invite code. Participation is optional, and live location sharing ends when the group-run session ends.
5. Third-Party Disclosure and Processing
The Service does not sell your personal information. Data processing may be delegated to the following processors, only to the extent needed to provide the Service:
- Backend/database hosting — storing and syncing account, diet, and workout records
- AI diet analysis — nutritional analysis of food photos and text
- Apple, Google — social sign-in authentication
- Apple App Store, Google Play — in-app subscription payment processing
- Google Firebase Cloud Messaging — push registration and delivery of service notifications
- Stripe — website subscription payment processing
6. Data Retention
Personal information is deleted without delay when you close your account or when the purpose of collection has been fulfilled. Running routes are retained as workout records until you delete them or close your account. Push-registration data is deleted or invalidated when you sign out, close your account, or the registration expires. Applicable legal retention requirements may still apply.
7. Your Rights and Account/Data Deletion
You can view and update your personal information and request account deletion at any time. In the app, Settings > Delete Account permanently deletes your account and linked diet, workout/route, challenge, community, and other account data. Deletion cannot be undone.
8. Children Under 14
The Service is not directed at children under 14, and we do not knowingly collect personal information from them.
9. Security Measures
We apply reasonable safeguards such as encryption in transit (HTTPS/TLS) and storing authentication tokens in iOS Keychain or Android encrypted secure storage.
10. Changes to This Policy
If this policy changes, we will announce the revisions and their effective date on this page.
11. Contact
Privacy inquiries: lemonaatree@gmail.com