Privacy policy
Who we are
Three7Jean is a social networking app. The data controller is Argyrios Mistriotis. For any privacy matter, write to support@three7jean.com.
What data we collect
Account: your email and password (stored only in encrypted form; no one can see it).
Profile: name, bio, profile photo, cover image, optional city, the photos you add under “This is me” and the interests you choose.
Content: posts (photos, videos, links, captions, topics, hashtags), comments, XPRESS, moments you save to your account and the private messages you send.
Community safety: reports you make, accounts you block and the date you accepted the Terms of use.
We do not collect location, contacts, advertising identifiers or tracking data. We do not sell or share data for advertising.
What stays only on your device
Your local library, drafts and reminders stay on your device and are not sent to our servers.
Exception: when you “keep” something for yourself instead of sharing it, only the topics you gave it (e.g. “Cinema”) are sent to your account, so they count toward finding people with similar taste. The photo, video, link and text are not sent. Nobody else sees these topics, and they are deleted when you delete the entry or your account.
Why we use it
To make the app work (sign-in, profile, posts, messages), to keep the community safe (reports, blocking, abuse limits) and to suggest content based on the interests you chose. The legal basis is our contract with you (the Terms of use) and our legitimate interest in keeping the service safe.
“On the same wavelength” (in Common ground): we automatically compare the topics of what you keep in your pocket, what expresses you (XPRESS) and the interests you declared with those of other members, to show you posts by people with similar taste. Your pocket is private: the reason a post is shown never reveals what anyone has kept. The only exception is people you are mutually in Common ground with: they see only what you have both kept, never what only you keep. With the lock, an item stays only for you. No profile is built for advertising.
When you upload a profile photo, our server automatically checks whether it contains a human face (detection only, never recognition or identification). No biometric data is created or kept; we only store whether the check passed. For members aged 15–17 the check is not performed.
Who sees it
What you publish on your public profile and in the feed is visible to other Three7Jean members. When you XPRESS a post, its creator sees that it was you; no one else does. Private messages are visible only to the people in the conversation, unless someone reports them, in which case the moderator reviews them.
Data is hosted by Supabase (Supabase Inc.), which acts as our processor.
When the app hits an error, an error report is sent to Sentry (Functional Software Inc.), stored in the European Union, which acts as our processor. The report contains only technical details (the error, the app version, the device model and operating system) and never your name, your email, what you write or what you upload.
The topics that express you (“What expresses you?”) appear on your public profile, behind the “What expresses me” button. You can hide them at any time with the “Show on my profile” switch; even when hidden, they count toward finding people with similar taste.
What you share in the Feed may also be seen by a visitor without an account: up to 15 recent public posts, with the creator's name and photo, without city or profile. Posts by members under 18 are never shown to visitors.
How long we keep it
For as long as your account exists. When you ask to delete it, your account closes immediately (your profile and posts are no longer shown) and after 14 days your account, profile, posts, comments, messages and files are deleted for good. If you sign in again within the 14 days, you can keep it. The provider’s backups are deleted automatically within a few weeks.
Exception: if an account is permanently closed for a serious breach of the Terms, we keep an irreversible fingerprint (hash) of the email, the reason and the date, so the same email cannot sign up again. The email cannot be recovered from the fingerprint. Basis: our legitimate interest in protecting members.
Deleting your account
In the app: Profile → Settings → Account → Delete account. From there you can also download all your data (a JSON file, with links to your photos and videos). If you no longer have access to the app, email support@three7jean.com from your account’s address and we will delete it within 30 days.
Your rights
You have the right to access, correct, delete and port your data, and to restrict or object to its processing. Write to us at support@three7jean.com. You can also lodge a complaint with the Hellenic Data Protection Authority (www.dpa.gr) or the data protection authority where you live.
Age
Three7Jean is for people aged 15 and over. If we learn that an account belongs to someone younger, we delete it.
Changes
If anything important changes, we will let you know in the app. Last updated: 2026-11-01.