QR Guard: Check Before Open
Check Before Opening
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
QR Guard is a simple QR and barcode scanner that helps you preview contents before opening links.
Version 1.1.0 introduces a refreshed interface with a brighter, friendlier look. The scan, history, and settings screens are easier to move between, with playful character icons that make everyday checking feel lighter while keeping the app calm and practical.
▼ Key Features
・Scan QR codes and barcodes
・Scan QR codes from images
・Preview URLs and text before opening
・Show the destination domain for links
・Notice link formats that deserve extra attention, such as shortened URLs
・Save and delete scan history on your device
・Switch the app language from Settings
▼ Privacy-Focused
・Camera data is processed on-device only, never stored or transmitted
・Scanned contents are not sent to external servers
・History stays on your device and can be deleted anytime
▼ Review Before Opening
QR codes are convenient, but sometimes you want to see what they contain before visiting a link.
QR Guard shows the scanned URL, text, or barcode information on a confirmation screen first.
You decide whether to open the link after reviewing the contents.
▼ How to Use
1. Scan a QR code or barcode with the camera
2. Scan a QR code from an image when needed
3. Review the contents before opening
4. Check previous scans in the History tab
▼ Perfect For
・Users who want to review QR codes before opening
・People who want to check unknown links or shortened URLs carefully
・Anyone who also wants basic barcode scanning
・Users who prefer a friendly, easy-to-read scanner
・People who want scan history to stay on their device
※This app does not guarantee the safety of linked destinations. Please use your own judgment.
※Camera permission required. Used only for QR and barcode scanning.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Improved app stability and reliability.
- Fixed issues that could affect error reporting and app diagnostics.
- Made minor maintenance and quality improvements.
The developer, NINJA SYSTEM, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ninja System
- Size
- 28.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later. - Mac
Requires macOS 12.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Ninja System. All rights reserved.