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Zzazan (짜잔 in Korean) is a family photo app that recognizes your child's face on your device and gathers their photos out of a scattered camera roll. On the home screen the app is labeled ‘ZzaZan’.

Register your child by picking a face in a single photo, and photos of the same face come together by date. For similar shots taken in a row, it weighs face quality, sharpness, and smiles to pick the best one as the key photo.

The photos you pick go straight to shared family group albums — grandparents on each side, daycare — and any moment can be found again by people, occasion, milestone, or place tags.

Get the iPhone app on the App Store and the Android app on Google Play.

To start fresh, you sign in with a social account such as Kakao. If you have already been using the app without signing in, you can keep using it as before, and your photos, face analysis results, and child information stay on your device only and are never uploaded to a server.

Cloud storage, family sharing, and syncing across devices become available once you link a social account. If you try to post photos to a group without signing in, the app will suggest signing in, and linking keeps the account you have been using.

Data that lives only on your device disappears when you delete the app and cannot be restored from the server. The details are in Article 1 of the Privacy Policy.

The app is free to download and stays usable on the free plan alone. Storage is 10GB free by product design.

There is nothing to purchase inside the app right now.

No. Auto-upload is off by default.

While you use the app without signing in, your photos never leave the device. Linking a social account makes original backup available by default, but nothing is stored on the server until a backup actually runs.

The details are in Article 1 of the Privacy Policy.

Backed-up originals are stored in the Republic of Korea (Seoul). To deliver photos quickly we use a global content delivery network, so data may be temporarily cached at points of presence outside Korea for up to 24 hours.

Even cached files can only be opened through a temporary address valid for 60 seconds. Article 6 of the Privacy Policy describes this in full.

Yes. Deleted originals and pre-replacement versions stay recoverable for 30 days. After 30 days the actual file in storage is permanently deleted.

However, choosing Empty trash under Manage → Cloud Trash deletes them permanently right away, without waiting 30 days, and this can't be undone.

Clean up on the Manage screen — opened with the gear icon (Settings) at the top right of the Home screen — shows the photos you can clean up.

Blurry, duplicate, and near-identical shots are grouped so you can compare them. You choose what to delete — the app never deletes on its own.

No. Face detection coordinates, face feature values, face crops, and unconfirmed face groups exist only on your device and are never transmitted to a server.

We do not track real-time location. Your movement history and current position are never collected.

If you allow the device location permission, the photo map uses your current position only to choose where the map opens. It is never stored, attached to photos, or sent to a server, and the map still opens if you decline.

Capture coordinates already embedded in a photo are kept with the original once the original is backed up.

Region names (for example “Aewol, Jeju”) are decided on the device. The app groups photos taken near one another into a grid of about 5 km and sends only the coordinates of each grid point to the device operating system's location-name service (Apple for the iOS app, Google for the Android app) to get the region name. With a signed-in account it does this only while child information sync is on; it also does this when you use the app without signing in (as a guest). It does not send the exact coordinates of individual photos or the photos themselves, and the names it gets back are stored on the device. From the app versions that sync region names to the server, only the region names attached to backed-up photos (no coordinates) are also stored on our server (for photos added to a shared album, they are also visible to that album's members), and they are deleted without delay when you turn child information sync off. Our servers do not determine capture regions.

Turn off Share usage statistics (Share AI analysis statistics in some app versions) under Manage → Privacy & consent, and sending to the analytics tool (Google) and sending AI analysis statistics stop immediately. Open Manage with the gear icon (Settings) at the top right of the Home screen.

From the app versions that have Share AI analysis statistics, basic statistics are sent to the Operator's server regardless of this switch. If you want them stopped, you can request suspension of their processing by contacting us.

The collected items and their retention periods are listed in Article 6 of the Privacy Policy. Photos and videos, your child's name and date of birth, precise location, raw search terms, and advertising identifiers are not collected.

Once you sign in with a social account, server sync of child information such as your child's name, birthday, and tags is on by default. There is no separate consent screen, and you can turn it off at any time with Sync person info to server (labeled “Sync child info to server” in some app versions) under Manage → Privacy & consent.

Turning it off deletes child information held on the server with no grace period. Only the automatic-tag reference lists attached to each photo are emptied in turn by a server cleanup job that runs every 15 minutes, and they are not used for viewing, search, or sharing in the meantime. Data on your device and originals already backed up remain untouched. While it is off, server search, naming capture regions, and sharing a child's profile with a family group do not work.

On a device without the app installed, an information page opens instead. Install the app, then open the link again.

An invite link works for anyone who has it, not only the person you sent it to: for 7 days after it is sent, up to 10 people can join the album with one link. Please do not post it on public boards or social media.

No. Family members see only the photos you add to a shared album, and view, download, edit, and invite permissions are set for each member. Cancelling a share or revoking a permission blocks access immediately, although originals a member has already downloaded are not recalled.

You can request it in the app under Manage → Account → Delete account. Open Manage with the gear icon (Settings) at the top right of the Home screen. An account signed in with a social account has a 30-day grace period after the request, during which you can cancel. While it lasts, only your own download and cleanup are allowed and family access is blocked immediately.

When the grace period ends, deletion starts and can't be undone. The photos and videos you uploaded and your account data are deleted, but some records remain afterwards, such as a deletion marker for each photo.

If you use the app without signing in (as a guest) and request account deletion, it is deleted right away, with no 30-day grace period. A guest's data on the server is only an anonymous account, which is cleaned up 90 days after the last use if it goes unused. Data on your device is removed when you delete the app.

How to request deletion after deleting the app, and what is deleted or kept and for how long, is set out on the account deletion page.

You sign out on each device from the app on that device — Manage → Account → Log Out. The app has no option to end sign-ins on other devices all at once.

If you have lost a device or no longer have it and need its access cut off, let us know through Contact and we will act without delay once confirmed.

First update the app to the latest version and restart your device.

If it keeps happening, tell us the device model, OS version, app version, and when it happened. Anything that helps us reproduce it makes the fix much faster.