Last updated: October 22, 2026
Introduction
"mozalina" (hereinafter referred to as "the App") is a photo editing application that allows users to add face stamps to photos. This Privacy Policy explains how we handle personal information in the App.
Information We Collect
1. Photos and Camera Access
The App requests access to photos and camera for the following purposes:
- Camera: To take photos and add stamps
- Photo Library (Read): To select existing photos and add stamps
- Photo Library (Write): To save edited photos
Important: Photos taken or selected are processed only on your device and are never transmitted to external servers.
2. Face Data (Face Detection)
The App uses Apple's Vision framework on-device to detect faces in photos selected by the user, solely to automatically place face stamps over those faces. Face detection runs only when the user taps the face detection button on the editing screen, or when a photo is opened while the user has turned on the automatic face stamp setting (off by default).
- Face data collected: Only the rectangular region (position and size) of each face and the positions of the left and right pupils (facial landmarks), which are used to match the stamp's angle to the tilt of the face. The App does not create face prints, facial recognition templates, or any other biometric identifiers, and does not identify who is in the photo.
- Use: Face data is used only to calculate the position, size, and angle of the face stamps. It is never used for any other purpose, such as advertising, analytics, identity verification, or training machine learning models.
- Processing and storage: All processing is performed entirely on your device. Face data exists only temporarily in the device's memory and is never written to disk, iCloud, or any external server.
- Retention and deletion: Face data is discarded as soon as the stamp position, size, and angle have been calculated (normally in less than one second). Only the resulting stamp position, size, and angle remain while editing, and these are also discarded when the editing screen is closed.
- Sharing with third parties: Face data is never transmitted, shared with, or sold to any third party, including Firebase and AdMob. Analytics data, advertising data, and crash reports do not contain face data.
3. Analytics Data (Firebase Analytics)
The App uses Firebase Analytics to improve our services. The following information may be automatically collected:
- App usage (screen transitions, feature usage frequency, etc.)
- Device information (device model, OS version, etc.)
- Crash reports (for improving app stability)
This information is anonymized and does not contain personally identifiable information.
4. Advertising Data (AdMob)
The App uses Google AdMob to display advertisements. AdMob may collect the following information to optimize ad delivery:
- Advertising identifier (IDFA)
- Device information
- App usage information
- Ad interaction information
For more details, please see Google's Privacy Policy.
How We Use Information
The collected information is used for the following purposes:
- Providing app functionality (photo editing features)
- Improving app quality and fixing bugs
- Analyzing app usage
- Delivering advertisements
Information Sharing
Information collected by the App may be shared with the following third-party services:
- Google Firebase: For app analytics and crash reporting
- Google AdMob: For ad delivery
These services handle information according to their respective privacy policies.
Your Rights
You have the following rights:
- You can change permissions for camera and photo library access in your device settings
- You can limit the use of advertising identifier (IDFA) in your device settings
- You can stop future information collection by uninstalling the App
Data Retention Period
- Photo data: Processed only on the device and not stored by the App
- Face data: Discarded from the device's memory as soon as the stamp placement has been calculated (see "2. Face Data")
- Analytics data: Stored according to Firebase Analytics policies
- Advertising data: Stored according to AdMob policies
Children's Privacy
The App is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13.
Security
We implement appropriate technical and organizational security measures to protect your information. However, please understand that no method of transmission over the Internet or electronic storage is 100% secure.
Changes to This Privacy Policy
This Privacy Policy may be changed without notice. In case of significant changes, we will update the "Last updated" date on this page. We recommend that you review this page periodically.
Third-Party Service Privacy Policies
Privacy policies of third-party services used by the App:
Contact Us
If you have any questions or concerns about this Privacy Policy, please contact us:
- Support URL: /en/apps/mozalina/
This Privacy Policy is governed by the laws of Japan.