Privacy Policy — 6Feets

Last updated: August 11, 2026

Disponible en français →

1. Who is responsible for your data

The 6Feets app is published by Jack Kinosky, a sole proprietor (in French, an entrepreneur individuel — France's micro-enterprise status) registered in France.

• SIRET: to be completed
• Address: to be completed
• Contact for any question about personal data: to be completed — email address

There's no data protection officer: the business doesn't meet any of the conditions that would require one under the law. Requests go directly to the address above.

2. In three sentences

6Feets runs on your phone. As long as you don't sign in with your Apple account, nothing you write ever leaves the device — not your answers, not your journal, not your measurements. The day you sign in, a copy of your tracking data goes to a server located in Paris, France, so you can find it again if you switch phones — and you can erase everything, online and on the phone, from the app's Settings.

3. What the app collects, and when

3.1 The onboarding questionnaire

On first launch, the app asks a series of questions. Whether you answer as a teen or as a parent, they're the same questions — about you or about your child.

Two of these categories deserve to be named plainly, because the law treats them differently: puberty markers are health data, and ethnicity is sensitive data. They're used to calculate the adult height range, which is the core of the product. They're never sold, never shared, and never used to target you.

3.2 What you log every day

• Your journal: bedtime, wake-up time, sleep duration, how you felt on waking (1 to 4), moves checked off during the day, workouts completed, and the text of the meals you type in yourself.
• Your height measurements, with their date.
• Your settings: your stated sleep schedule, your morning reminder, the voice used during workouts.
• Your streak: the number of consecutive perfect days, and the freezes you've earned.
• Any moves you've added yourself, if there are any.

3.3 Your account

Sign-in works only through Sign in with Apple. There's no password to invent, no email address to type. Apple gives us an account identifier and an email address — which can be a private relay address if you chose "Hide My Email," in which case we never see your real address.

An account is never required to use the app: the five-day trial and all daily tracking work without one.

3.4 Usage statistics

Only if you tapped "Allow" on the "Help improve the app?" screen, and only for as long as you don't withdraw that consent:

• usage events are sent to our analytics tool. An event states what was done, never what your body is worth: "workout started," "night logged," "meal entered," "card expanded," "monthly check-in viewed." When a number comes with it, it's a count of actions (the number of foods recognized in a meal, the step where a workout was abandoned), never a height, a weight, a date of birth, or a prediction;
• a copy of your questionnaire answers is stored on our server — including the ones from § 3.1: height, weight, date of birth, ethnicity, and puberty markers. This copy is used to understand who the app really serves and to improve the calculation. Without your consent, the server refuses this write: it isn't a promise, it's a rule enforced by the database itself.

The identifier used for statistics is generated at random on your phone and is never sent to our server or attached to your account. It can't be used to link any behavior to an identifiable person: we count people without knowing which ones. It's only generated once you've given your consent.

If you answer "No thanks," nothing is sent, and whatever had been recorded while waiting for your answer is discarded.

3.5 What never leaves your phone

Even with an account and consent to statistics, all of the following stays on the device:

• all of the calculation — the height range, the analysis on the Insights tab, the reading of the meals you write in, the advice, the monthly recap, the achievements, the streak. There is exactly one outgoing network call in the entire app besides your account's sync, and it's the one described in § 3.4;
• the text of your meals: the food dictionary is built into the app, it works offline, and what you ate is never sent anywhere to be analyzed;
• the coach: its answers are written into the app in advance. No language model is ever queried, so nothing you read or tap there is sent to any third party;
• the moves you've added yourself, the workout voice, the statistics identifier, the memory of which reminders you've already seen and which monthly recap you've already been shown;
• the home-screen widget: the app writes its text into a storage space shared with your iPhone, never to a server.

4. Where the data that leaves goes

The database is hosted by Supabase, in the eu-west-3 (Paris, France) region. It's protected row by row: the server only returns an account's own rows to that account, and this rule is enforced by the database itself, not by the app.

5. Legal basis

• Your consent for the copy of your questionnaire answers and for usage statistics. It's given on the "Help improve the app?" screen and can be withdrawn at any time from Settings → Privacy and Data → Share Analytics. Withdrawing it also deletes the copy already stored online, immediately, without you having to ask: it's an automatic behavior of the database.
• Performance of the service you request: your account, the backup of your journal and measurements, and the management of your trial and subscription.

Health data and ethnicity are only processed on the basis of your explicit consent. Refusing doesn't stop you from using the app: the questionnaire feeds the calculation on your phone regardless — it's only its online copy that depends on your consent.

6. Age and parental consent

6Feets is aimed at teenagers who are still growing.

If you are under 15, one of your parents (or whoever holds parental authority) must consent along with you before you use the app. This is what French law requires for online services offered directly to a minor. The questionnaire includes a "Parent" path for exactly this reason: it's the simplest way to do it properly.

A parent can, at any time, ask to access, correct, or delete their child's data by writing to the address in § 1. Deleting the account from the app erases everything, online and on the phone.

7. What the app doesn't do — and this can be verified

• No photos, no camera, no scanning of faces or bodies. The app never requests camera access and doesn't have that permission.
• No advertising, no ad profiling, no third-party trackers. The app doesn't request Apple's tracking permission, because it has no use for it.
• No reselling, no exchanging, no sharing of your data with anyone outside the providers listed in § 8, who work for us and only on our instructions.
• No health data read from Apple's Health app, no location, no access to your contacts, no microphone recording.
• No automated decision that would produce a legal effect on you. The height range is a statistical estimate shown for informational purposes, not a diagnosis.
• No health data in support messages. When you report a bug, the app drafts an email that includes the app version, the iOS version, the device type, and your account email if you have one. No height, no weight, no journal, no prediction, no statistics identifier.

8. Who else has access

None of these providers is allowed to use your data for its own purposes.

9. How long data is kept

• On your phone: for as long as the app is installed. Uninstalling it erases the local backup.
• On our server: for as long as your account exists. There is, as of today, no automatic purge of inactive accounts — the day there is one, this page will say so and state its duration.
• The copy of your questionnaire: until you withdraw your consent to statistics, which deletes it immediately, or until your account is deleted.
• Usage statistics: to be completed — retention period.

10. Your rights

You can, at any time, request:

• access to your data and a copy of it;
• its correction if something is wrong;
• its deletion;
• the restriction of, or objection to, processing;
• portability, meaning a file you can take wherever you want;
• the withdrawal of your consent, without affecting what was already done before that.

Two of these rights can be exercised directly in the app, without writing to anyone:

• Settings → Privacy and Data → Download My Data produces a JSON file with your questionnaire answers, your settings, your journal, your measurements, and your streak, which you send wherever you want from iOS's share sheet;
• Settings → Account → Delete My Account deletes your account and, in cascade, your profile, the copy of your questionnaire, your journal, and your measurements on the server, then erases everything left on the phone. This is permanent and cannot be undone.

There's also Reset My Profile, just above it: that one only erases the phone and leaves the online account untouched.

For everything else, write to the address in § 1. If you're not satisfied with the response, you can bring your complaint to the CNIL (Commission nationale de l'informatique et des libertés — France's data protection authority — 3 place de Fontenoy, 75007 Paris, France, cnil.fr).

11. Security

Exchanges with the server use HTTPS. Access to data is siloed by account at the database level itself: a request asking for another user's rows returns nothing, no matter the state of the app. Sign-in relies on Sign in with Apple, so no password is stored anywhere.

12. Changes

This page can change, in particular when a feature changes what is collected. The date at the top shows the latest version. A change that expands data collection won't apply retroactively to data already collected under an earlier version of this policy.

13. Contact us

to be completed — contact email