# Sentinel Line — Location-based app protection

> Location-based app protection (iPhone/iPad app by Frederico Cox.)

- Source: https://appshunter.io/ios/app/sentinel-line/id6807493110 (this page in markdown: same URL + `.md`)
- Developer: [Frederico Cox](https://appshunter.io/developer/1455752353)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 26.1 · 5 MB
- Languages: American English
- Released: 2026-09-06
- Data updated: 2026-10-12
- User reviews in markdown: https://appshunter.io/ios/app/sentinel-line/id6807493110/reviews.md

## What is Sentinel Line?

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.


## Version history (last 4 releases)

### 1.3 — 2026-09-21

Improved Safety Zone protection logic, including support for apps shared across multiple zones.

### 1.2 — 2026-09-12

Improved Safety Zone reliability, enhanced the map experience, and added Face ID authentication for secure access.

### 1.1 — 2026-09-08

Improved reliability and protection, with a more resilient location-based experience. Added clearer guidance for required permissions and a new option to sync protection using your current location.

### 1.0 — 2026-09-07

No release notes.

## More apps by Frederico Cox

- [Sequencia](https://appshunter.io/ios/app/sequencia/id1460748190)
- [4 in Sequence](https://appshunter.io/ios/app/4-in-sequence/id1506847300)
- [Quizly AI](https://appshunter.io/ios/app/quizly-ai/id6745493849)

All apps by Frederico Cox: https://appshunter.io/developer/1455752353

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-12.*