Your data

Delete your data

Last updated: 10 September 2026

This is a translation. The French original is the legally binding version: supprimer tes données.

This page is for Zarden, the sleep garden app published by Nicolas Carrion (Nyko Labs). It explains how your data is deleted, what is kept, and for how long.

1. In the app

Zarden has no cloud account and does not back up your garden. Your nights, garden, inventory, recipes and night streak live only on your device. We hold no copy.

To delete all of it: uninstall the app. Deletion is permanent. We cannot restore a garden.

2. Health

Zarden reads sleep periods (with your permission) and never writes to Health. To revoke access:

• iOS, Settings → Privacy & Security → Health → Zarden
• Android, Settings → Health Connect → App permissions → Zarden

This does not change your health records: Zarden never wrote to them.

3. Advertising (Google AdMob)

If you watched the optional swallow video, Google AdMob may have received advertising identifiers, never your sleep. We cannot delete AdMob’s records for you.

• Android: Settings → Privacy → Ads → reset or delete your advertising ID.
• In the app, if the button is shown: Settings → Ads.
• myadcenter.google.com

4. What we hold

We do not hold your nights. If you write to contact@pourquoi.app, we keep the message and address until we reply, then for 12 months. To delete sooner, write to the same address and say “delete my data”. We do it within 30 days, usually within 72 hours.

There is no waitlist: this site does not collect an email.

5. Retention

• Garden and nights: on your device only, until you uninstall.
• Contact messages: up to 12 months, or sooner on request.
• AdMob records: under Google’s policy, not ours.

The day a cloud account exists, this page will also describe how to delete it without uninstalling.