KidsMask:Face Blur for Privacy
Blur Faces in Videos & Photos
Only for iPhone
Free · In‑App Purchases
iPhone
Sharing kids' party or sports videos? Protect other children's privacy while keeping your child visible. 100% on-device. No cloud. No data collected.
■ Share Without Worrying About Other Kids' Privacy
Want to post your child's birthday party or soccer game video on Instagram? Worried about other children's faces being recorded? KidsMask solves this with one tap.
KidsMask is an iPhone app that lets you keep YOUR child's face visible while blurring all other faces in videos and photos. Everything happens on your device. No cloud uploads. No face data stored.
■ What You Can Do
【Privacy-First Face Mosaic】
- Automatically detects and mosaics faces in videos and photos
- Tap to protect specific faces (keep them visible)
- Supports up to 4K video resolution
- Simple, intuitive operation
【Three Mosaic Styles】
- Pixel mosaic (Free)
- Gentle blur (Pro)
- Emoji stickers (Pro) — any standard emoji
【Manual Edit Mode】
Auto-detection isn't perfect. KidsMask includes a manual edit mode to catch faces that automatic processing missed — your last line of defense for privacy.
For videos, keyframe-based masks follow moving subjects with smooth interpolation between frames.
【Smart Video Tracking】
Camera pans, brief occlusions, people crossing in front — KidsMask's color-based tracking keeps your protected child identified throughout the video.
■ Privacy You Can Trust
KidsMask is built on a fundamental commitment to privacy:
- No face data is stored on your device
- Nothing is uploaded to any cloud service
- No tracking, no analytics, no ads
- All processing happens locally on your iPhone
- Even your protected child's face data is never persisted
We respect not only the privacy of the children in your videos, but also yours.
■ Free Features
- Process videos up to 1 minute long
- 3 photos per day
- Pixel mosaic style
- Basic manual editing
The core privacy protection — keeping your child visible while mosaicing others — works fully in the free version.
■ KidsMask Pro (One-Time Purchase)
- Unlimited video and photo processing
- Gentle blur mosaic style
- Emoji stickers (any standard emoji)
- Batch processing for multiple files
- Unlimited manual editing keyframes
- No watermark
Pro is a one-time purchase, not a subscription. Buy once, use forever.
■ Perfect For
- Parents sharing birthday party videos on social media
- Sports game recordings with multiple children
- School play and recital videos
- Family vacation photos at public places
- Anyone who wants to share kids' moments responsibly
■ Why On-Device Matters
Many face processing apps send your photos and videos to cloud servers. This means your private family moments — and other children's faces — exist on someone else's computer.
KidsMask never does this. Everything happens on your iPhone, using Apple's Core ML and Vision frameworks. Your data is yours, period.
■ Requirements
- iOS 17.0 or later
- iPhone (iPad not supported)
■ Support
Support site: https://hibinokou-spec.github.io/kidsmask-support/
Contact: contact@kou-works.jp
■ About the Developer
KidsMask is created by kouworks (Japan), an independent iOS developer focused on privacy-respecting tools for families.
Website: https://kou-works.jp/
Built using Apple's on-device machine learning and computer vision frameworks. No external services, no cloud dependencies.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, kou works, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- kou works
- Size
- 35.8 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- KidsMask Pro $4.99
- Copyright
- © 2026 kouworks