Privacy policy
Last updated: 30 October 2026
This policy explains what the Body Evolution app ("Body Evolution", "we") collects, why, who processes it and how long it is kept. Body Evolution is run by Group Legion Pte. Ltd., 540 Sims Avenue, #03-05 Sims Avenue Centre, Singapore 387603, the data controller. Contact: contact@bodyevolution.fr.
In short. No ads, no tracking, no selling of data. Your health data is used only to coach you. Cycle data never leaves your iPhone except the current phase name and day. AI features run only after you allow them. You can export or delete everything from the app.
1. Your account
You sign in with Apple or Google. We receive a unique account identifier and your first name. We do not keep your email address. We use these only to create and secure your account. A sign-in session expires after 90 days without use.
2. Data you add
Your profile (first name, birth date, sex, height, weight, goals, supplements), meals, workouts and programs, weigh-ins and daily check-ins are stored on your iPhone and synced to our servers so your coaching works across devices. Our servers run on Cloudflare; the database is stored in the European Union. Meal photos are not synced.
3. Apple Health and WHOOP
If you allow it, the app reads from Apple Health: steps, sleep, heart rate variability, resting and live heart rate, blood oxygen, active energy, VO2 max, weight and body fat, and, only if you turn on cycle tracking, menstrual flow. It can also save the weigh-ins you log to Apple Health.
If you connect WHOOP through its official service, WHOOP gives us an access key that we keep on our server, and we fetch your recovery, sleep, strain, steps and workout data to show it in the app. Disconnecting WHOOP, or deleting your account, revokes our access and deletes the key.
WHOOP direct (beta) is an optional Bluetooth link that reads your strap straight from your iPhone and computes your scores on the iPhone, without WHOOP's cloud. It is independent of WHOOP. The resulting daily summaries are used like the rest of your health data.
Data from Apple Health is never used for advertising or marketing, never sold, and never shared except as described in section 6 to give you coaching.
4. Cycle, energy and libido
Cycle data read from Apple Health stays on your iPhone and is not saved or synced. With cycle-aware coaching on, only the current phase name and the day of your cycle are sent to the AI coach.
Energy and libido check-ins are stored on your iPhone. To find patterns, the AI coach receives the date, time and severity of your recent energy crashes and weekly libido averages, never the individual entries.
Night mode (microphone and motion)
If you start Night mode to track your sleep with your iPhone, the app listens through the microphone and reads the motion sensors all night, while the screen is locked. The sound is analysed on your iPhone in real time (sound levels, short sounds, snoring) and is not recorded or sent anywhere. Only the result is kept: your bed and wake times, wake-ups, sleep estimate and score, which are used like the rest of your sleep data. If you turn on "Keep short sound clips", the app keeps a few 10-second clips of snoring or talking on your iPhone so you can listen to them; they are never uploaded and are deleted after 7 days. To help us fix sleep tracking, the app sends us a few numbers about each night (for example how many short sounds and wake-ups it counted), never sound.
5. Photos
Face and body check-in photos are analysed and stored on your iPhone. If you choose an AI analysis (meal photo, face check-in, physique or body scan, product, program screenshot or blood-test file), that file is sent securely through our server to our AI provider for that analysis. We do not store it.
If you create a cartoon avatar, your photo is sent to our image provider (WaveSpeed) to draw it. The cartoon is stored on our server and shown to other members next to your first name (section 7). Your real photos are never shown to anyone.
Face data
What we collect. When you do a face check-in or take your profile picture, the app uses a photo of your face from the front camera. On your iPhone, Apple's Vision framework measures landmark points on that photo (eyes, brows, nose, mouth, jaw outline) to compute proportions and scores such as symmetry and jawline. The app keeps the photo, those measurements and the scores.
TrueDepth camera (ARKit). On an iPhone with a TrueDepth camera, the face check-in uses ARKit face tracking while the scan is on screen. ARKit gives the app the position and angle of your face and a live face mesh. The app uses them for two things only: to draw the mesh over your face on screen, and to tell when you have turned left, turned right and faced the camera again, so the photo is taken by itself when your face is straight. The face mesh, depth data, face position and expressions (blend shapes) are used in real time on your iPhone and then discarded. They are never saved, never sent to our server or to anyone else, and never used to identify you. Only the ordinary colour photo is kept, as described above.
How we use it. Only to show you your own results and how they change over time, and to give you general skincare and lifestyle tips. We never use face data to identify you, to sign you in, for advertising or for profiling.
Where it is stored and for how long. Your face photos, landmark measurements and scores stay on your iPhone, in the app's private storage. They are not uploaded to our servers. They are kept until you delete the check-in, delete your account, or delete the app.
Sharing. Only if you choose an AI analysis, and after you agree on the consent screen: the face photo is sent securely through our server to Anthropic (Claude) for the skin and tiredness analysis, or to WaveSpeed to draw your cartoon avatar. Our server does not keep the photo. These providers process it for that request only and do not use it to train their models. When you chat with the AI coach, the scores of your latest face check-in (numbers such as skin, symmetry and tiredness, never the photo or the landmark points) are part of the data summary sent with your message (section 6). We do not sell or share face data with anyone else.
Deleting it. Delete a face check-in from its screen, or delete your account in Profile → Settings → Delete account. Deleting the app removes all face data stored on your iPhone.
6. AI processing
The coach in Body Evolution is AI Ferdinand, the AI version of Ferdinand, a certified personal trainer, nutritionist and medical trainer. When you chat with it, your messages and a summary of your own data (profile, goals, food targets, sleep, heart rate variability, resting heart rate, steps, recent workouts, scan scores, lab markers you added, cycle phase and energy patterns as described above) are sent to our AI provider to write the answer. The coach may search public scientific literature (PubMed, run by the US National Library of Medicine) with search terms it writes from your question; your data is not sent there. We do not store your chat on our servers.
We ask your permission before the first AI feature is used, and you can withdraw it at any time in Settings → Privacy & data. Without it, AI features stay off and the rest of the app keeps working.
AI providers: Anthropic (Claude) for the coach and for text, photo and file analysis; WaveSpeed for avatar images. They process data on our instructions. Anthropic does not use data sent through its API to train its models.
AI answers and estimates (calories, body fat range, fitness age, lab explanations and similar) are approximations for general fitness coaching. They are not medical advice, diagnosis or treatment.
7. Community ranking
Members see a ranking of the people in the app. It shows your first name, cartoon avatar, points, active days, daily step totals and your best set on exercise leaderboards. It never shows food, weight, health data or real photos. You are in the ranking by default; turn off "Show me in the ranking" on the ranking screen to leave it.
You can report a member or block them; a block hides you from each other in the ranking and leaderboards. Reports (who reported whom, the reason and the time) are kept so the coach can review them.
The coach (the app's owner) can see the list of members (first name, join date), reports and rewards to honour, and can remove a member. He cannot read your health data, meals or photos.
8. Diagnostics
To fix bugs we collect crash reports and simple technical events: app version, device model, iOS version, error messages and timings (for example how long the camera took to start). They contain no meals, photos or health data. They are linked to your account so we can fix the problems you meet, and are deleted with your account.
9. Other services the app talks to
- Open Food Facts: when you search for a food, your search text is sent from your iPhone to Open Food Facts.
- ExerciseDB: exercise animations are loaded from ExerciseDB's servers, which see your IP address.
- Apple and Google: for sign-in. Cloudflare: hosting.
10. Sharing
We do not sell personal data, show ads or track you across apps and websites. We share data only with the providers listed in this policy, to run the app. Some providers (Anthropic, WaveSpeed) process data outside the European Union; those transfers rely on the European Commission's Standard Contractual Clauses or equivalent safeguards.
11. Legal bases
We process your account and app data to provide the service you asked for (contract). We process health data, cycle data and photos, and send data to AI providers, only with your explicit consent, which you can withdraw at any time in the app. Diagnostics and moderation reports are based on our legitimate interest in a working, safe app.
12. How long we keep data
| Data | Kept |
|---|---|
| Account, profile, synced records, step totals, rewards, cartoon, diagnostics, blocks and reports you made | Until you delete your account |
| Sessions | Expire after 90 days without use |
| WHOOP access key | Until you disconnect WHOOP or delete your account |
| AI inputs (photos, chat, files) | Not stored by us |
| Cycle, energy and libido entries, face and body photos, lab files | On your iPhone only, until you delete them or the app |
13. Your rights
Export your data: Profile → Settings → Account → Export my data. Delete your account: Profile → Settings → Delete account. Deletion removes your account and its data from our servers (including diagnostics, step totals, blocks and reports), revokes our WHOOP access and erases the app's data on that iPhone.
You can also ask for access, correction, erasure, restriction or portability, or object to processing, by writing to contact@bodyevolution.fr. If you are in the European Union you have these rights under the GDPR and can complain to your local data protection authority (in France, the CNIL); in Singapore, to the Personal Data Protection Commission.
14. Children
Body Evolution is not intended for anyone under 16 and does not knowingly collect data from them.
15. Changes
We will update this page if our practices change and show the new date above. For important changes we will tell you in the app.