Lynku Privacy Policy

Last updated: July 11, 2026

Lynku is a personal contact book. This page explains, in plain language, what the app does with your data. The short version: everything lives on your phone, and nothing leaves it without a deliberate action from you.

The essentials, in 5 points

No account, no Lynku server: your contacts, notes, dates and settings are stored only on your iPhone.
No ads, no trackers, no hidden analytics: Lynku contains no third-party analytics tools and sells nothing to anyone.
Data leaves your phone in three specific cases only, always triggered by you (details below).
The people described in your book fall under your personal use: Lynku does not see, collect or transmit your contact book.
You can export (CSV) or erase everything at any time, right in the app.

Who publishes Lynku?

Lynku is published by its independent creator. For any question about this policy or your data: [email protected].

What Lynku stores (on your phone only)

The contact cards you create or import: identity, contact details, circle, birthday, addresses, related people, important dates, interests, notes.
Your settings: reminder times, message tone, appearance, language, subscription state.
A local usage journal (for example "a card was viewed", "a message was copied") that powers the Statistics page. It never leaves your phone and is not included in any export or share.
The messages generated by the assistant, so you can find them again.

This data is stored in the app's storage on your device. If you use iCloud backup or a computer backup, it is included, like your other apps' data (that backup is handled by Apple, according to your Apple settings).

The three cases where data leaves your phone

1. When you ask for a message or gift ideas (✨ / 🎁).
To write a personalized message, the app sends our artificial intelligence provider (Anthropic, the Claude service) the relevant parts of the card in question: first name, last name, nickname, job, company, circle name, age and zodiac sign (if the birthday is filled in), that card's interests and notes, plus your optional instruction. Never sent: phone numbers, emails, addresses, related people, or the rest of your book. This information is used solely to generate the requested text, under Anthropic's privacy policy.

2. When you type an address in a card.
To suggest complete addresses as you type, the text you type in the address field (and it alone) is sent to the Photon geocoding service (photon.komoot.io), a free service based on OpenStreetMap. Nothing else goes with it.

3. When you send feedback (🐞 problem or 💡 idea).
Your message is delivered through the Web3Forms service to our email inbox, along with a few technical details shown on screen before sending: app version, iPhone model, iOS version, language, and the number of contacts (never their content). Your email address is attached only if you provide it, so we can reply.

As with any communication over the Internet, these services technically see the connection's IP address at the time of the request.

Apple services

The contacts map and the card mini-map use Apple Maps. Displayed addresses are located by Apple's mapping service, under Apple's privacy policy.
The Lynku+ subscription is handled entirely by the App Store: Lynku never sees or stores any payment data.
Notifications (birthdays, reminders) are scheduled locally on your phone — no server involved.

What Lynku does not do

No user account, no online profile.
No advertising, no ad partners.
No third-party analytics or audience measurement tools.
No selling, renting or sharing of data.
No access to your iPhone contacts without your explicit permission (and the import is read-only, for the cards you choose).

Your rights

Since your data lives on your device, you control it directly:

View and correct: everything is visible and editable in the app.
Export: Settings → Data → CSV export.
Erase: delete a card, or Settings → "Erase everything", or uninstall the app (local data disappears with it).

For data sent with feedback (the only case where we receive anything), you can request deletion at [email protected]. If you believe your rights are not being respected, you can contact your country's data protection authority.

Information about the people close to you

Your book describes people around you. As long as you use it for personal and household purposes, this falls under your private use (article 2(2)(c) of the GDPR) — Lynku has no access to it and no responsibility for it. If you share a card or an export, that is a deliberate action on your part: share with the same care you would expect for your own information. Out of respect for the people in your book, notes, circles, interests and links are never included when sharing a card (only identity, contact details and birthday are).

Children

Lynku is not intended for children under 13 and does not knowingly collect any data about them.

Changes

If this policy evolves (for example if the technical architecture changes), the new version will be published on this page with its update date. If what is transmitted changes in any meaningful way, the app will tell you.

Contact

[email protected]