Face Still — Privacy Policy
Last updated August 15, 2026
This Privacy Policy explains how Face Still (“the app”), provided by Cheng Kam To, collects, uses, and protects your information. By using the app you agree to this policy.
Information We Collect
We collect none of your content. The app has no account and no sign-in, and no server of ours ever receives a scan, a photograph, a 3D model, a note or a tag.
Your scans — the photograph and the 3D model saved beside it — along with any notes, tags and settings, are written into the app’s own container on your iPhone, under iOS file protection, and are read by nothing else.
Two things do leave the app, and neither carries anything you created: advertising, and anonymous usage measurement. Both are described below.
How We Use Your Information
Your scans are used on your device, to show them to you, to compare any two of them, and to assemble them into a video when you ask for one. They are never uploaded to us, never sold, and never shared.
The app does not alter your photographs. What is saved is the file the camera produced.
Camera and Face Data
Face Still uses ARKit face tracking through the TrueDepth camera for one purpose: to decide when your pose, distance and expression match the fixed reference, and to save a 3D model of your own face for your own comparison.
It is not Face ID. It identifies nobody, it matches against nothing, and the geometry never leaves your device.
The app also asks permission to add to your photo library, so it can save a video you export. It never asks to read your library: music is chosen through the system media picker, and the export is written out, never in.
iCloud Sync
iCloud Sync is off until you turn it on. When you do, scans are copied into the app’s iCloud container under your own Apple ID, and iOS replicates them between devices you already own. We have no access to that container and no account with which to obtain one.
It is a copy, not a move: the files on your phone are never moved or deleted.
Advertising
Face Still shows ads through Google AdMob. AdMob may use device identifiers to select and measure the ads you see; that use is governed by Google’s privacy & terms, not by us.
On iOS the app asks for App Tracking Transparency permission before any tracking identifier is used. If you decline, the app works exactly as before and you simply see less relevant ads.
Your scans, photographs, 3D models and notes are never shared with AdMob or with anyone else. Advertising authorisation for our apps is published at /app-ads.txt.
Diagnostics and Analytics
Face Still uses Google Firebase Analytics to count how the app is used, so we can tell which screens people actually reach and which ones they never find.
It records an app-instance identifier — a random value created on install, tied to no account and to no other app — along with automatic events such as first open, session start and screen views, plus your device model, OS version, app version, language, and an approximate region worked out from your IP address. Google does not log full IP addresses for this.
It never records your scans, photographs, 3D models, notes or tags. No event carries anything you typed or captured.
There is no crash reporter.
Third-Party Services
Apple, for the App Store, the camera and iCloud; Google AdMob, for advertising; and Google Firebase Analytics, for the usage measurement described above.
There are no others — no cloud database holding your scans, and no AI service. Nothing you create is sent to any of them.
Data Retention
We keep none of your content, because we never receive it. Your scans stay on your device — and, if you turned it on, in your own iCloud — for as long as you keep them.
The usage measurement is different: Google holds those events for a limited retention window set on the Firebase property, and aggregate totals after that. They describe the app, not you.
Your Choices and Deletion
Delete individual scans in the app, or delete the app to remove all of them. If you turned on iCloud Sync, you can also remove the app’s data from iCloud in Settings → [your name] → iCloud.
Deleting the app also discards the app-instance identifier used for usage measurement; a later reinstall is a new, unconnected install.
Advertising and tracking settings are under Settings → Privacy & Security on your iPhone.
Children’s Privacy
Face Still is not directed to children under 13, and we do not knowingly collect personal information from them.
Changes to This Policy
We may update this policy from time to time. The date at the top of this page reflects the latest version.
Contact
Questions about this policy? Send them through our feedback form.