Sentinel Line
Location-based app protection
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Designed for adults, Sentinel Line helps you manage your own app access for focus, digital wellbeing, privacy, and personal security.
It provides an extra layer of protection for sensitive apps and helps you stay focused by making selected apps available only in the places you choose.
Create Safety Zones around places that matter to you. While you are inside a protected zone, your selected apps remain available. When you leave the zone, Sentinel Line automatically protects them.
Safety Zones
• Create zones around specific locations
• Choose the radius of each zone
• Give each zone a meaningful name
• Edit zones whenever you need
App Protection
• Select the apps you want to protect
• Protection is automatically applied when you leave a zone
• Protection is automatically removed when you return
• Multiple zones can work together
Sentinel Line uses Apple's Family Controls and location technologies to provide location-based app protection.
Your zones and configuration are stored on your device.
Privacy & Location Access
Sentinel Line uses your location to automatically protect your apps based on the Safety Zones you create.
For automatic protection to work even when Sentinel Line is not open, Location Access must be set to “Always”.
Sentinel Line uses your location only to determine whether you are inside or outside the Safety Zones you have configured. Your location data is not shared with third parties or used for advertising.
You can change your location permission at any time in Settings → Privacy & Security → Location Services.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Improved Safety Zone protection logic, including support for apps shared across multiple zones.
The developer, Frederico Cox, 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
- Frederico Cox
- Size
- 5.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.1 or later.
- iPhone
Requires iOS 26.1 or later. - Mac
Requires macOS 26.1 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.1 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Frederico Cox