🛡️ flutter_jailbreak_guard

Jailbreak and root detection for Flutter, with Swift Package Manager support. A modern replacement for flutter_jailbreak_detection_plus that gives the same detection results.

• ✅ Swift Package Manager and CocoaPods on iOS
• ✅ Same results as flutter_jailbreak_detection_plus: the same engines and the same fallback values
• ✅ Fail-closed: a missing result reports the device as unsafe
• ✅ No main-thread blocking on Android: root checks run on a background task queue
• ✅ Your choice of iOS engine license: IOSSecuritySuite 1.9.x (BSD-2) or 2.x (EULA). See License.
• ✅ Tested: Dart unit tests, a Kotlin unit test, and integration tests

Contents

• Quick start
• API
• How it works
• Why this package
• Comparison with other packages
• Migration from flutter_jailbreak_detection_plus
• Behavior
• Limitations
• License

Quick start

1. Install the package.

flutter pub add flutter_jailbreak_guard

2. Check the device.

import 'package:flutter/services.dart';
import 'package:flutter_jailbreak_guard/flutter_jailbreak_guard.dart';

Future<bool> isUnsafeDevice() async {
  try {
    return await FlutterJailbreakGuard.isJailbroken;
  } on PlatformException {
    return true;
  }
}

3. iOS only: add the jailbreak app URL schemes to ios/Runner/Info.plist.

<key>LSApplicationQueriesSchemes</key>
<array>
    <string>undecimus</string>
    <string>sileo</string>
    <string>zbra</string>
    <string>filza</string>
</array>

If you skip step 3, iOS returns false for these URL checks. The other checks still run.

API

API	Returns true when	iOS	Android
FlutterJailbreakGuard.isJailbroken	The device is jailbroken or rooted	IOSSecuritySuite.amIJailbroken()	RootBeer.isRooted
FlutterJailbreakGuard.isDeveloperMode	iOS: the app runs in the simulator Android: developer options are on	IOSSecuritySuite.amIRunInEmulator()	Settings.Global.DEVELOPMENT_SETTINGS_ENABLED

On iOS, isDeveloperMode does not read the iOS Developer Mode setting.

How it works

FlutterJailbreakGuard.isJailbroken
  │
  ├── iOS      ──▶ IOSSecuritySuite.amIJailbroken()   main thread
  │
  └── Android  ──▶ RootBeer(context).isRooted          background task queue
                    (file checks, su, build tags)

Native result is null  ──▶ true  (fail-closed)
Native call fails      ──▶ PlatformException

Why this package

flutter_jailbreak_detection_plus is a common choice for jailbreak and root detection. It did not keep up with the current Flutter build tools.

	flutter_jailbreak_detection_plus 1.10.7	flutter_jailbreak_guard
iOS package manager	CocoaPods only	🆕 Swift Package Manager and CocoaPods
iOS plugin code	Swift with an Objective-C bridge	Swift only
Android Gradle Plugin	8.5.1	🆕 9.0.1
Kotlin	1.9.10	🆕 2.3.20
Android compileSdk	34	🆕 36
Gradle script	Groovy	Kotlin DSL
Android thread	Platform thread	🆕 Background task queue
Tests	None	🆕 Dart, Kotlin, integration

The goals of this package:

1. Current iOS builds: Flutter builds iOS plugins with Swift Package Manager. Without SPM support, a plugin keeps the app on CocoaPods.
2. Current Android builds: The plugin uses the current Android Gradle Plugin, Kotlin, and compileSdk.
3. No change in results: The plugin keeps the detection logic and fallback values of flutter_jailbreak_detection_plus. You change only the import and the method names.
4. One package with all of these: Other packages have some of these features. No other package in the comparison has all of them.

Comparison with other packages

flutter_jailbreak_guard is the only package in this list that has all six items.

Package	iOS SPM	Same results as _plus	Fail-closed	Android checks off the main thread	BSD-licensed iOS engine possible	Tests in the package
🛡️ flutter_jailbreak_guard	✅	✅	✅	✅	✅	✅
flutter_jailbreak_detection_plus	❌	—	✅	❌	✅	❌
flutter_jailbreak_detection	❌	✅	✅	❌	✅	❌
root_jailbreak_guard	✅	❌	✅	❌	❌	❌
jailbreak_root_detection	✅	❌	❌	✅	✅	❌
safe_device	✅	❌	❌	❓	—	✅
freerasp	✅	❌	—	—	—	❌

✅ Yes · ❌ No · ❓ Not checked · — Not applicable

• Same results as _plus: The package calls the same engine methods as flutter_jailbreak_detection_plus. You can migrate without a change in detection results.
• Fail-closed: If the native result is missing, the package reports the device as unsafe.
• BSD-licensed iOS engine possible: The app can use IOSSecuritySuite 1.9.x, which has the BSD-2 license. IOSSecuritySuite 2.x has a paid EULA for larger companies.
• Tests in the package: The package published on pub.dev contains tests.

Details: versions, engines, and minimum platforms

Data comes from the source code of the latest version on pub.dev, checked on 2026-10-15.

Package	Version	iOS engine	Android engine	Min iOS / Android API	Fallback when the result is missing	Android thread
flutter_jailbreak_guard	0.2.1	IOSSecuritySuite 1.9.10 to 2.x	RootBeer 0.1.2	13.0 / 24	true	Background task queue
flutter_jailbreak_detection_plus	1.10.7 (2025-10)	IOSSecuritySuite, no version pin	RootBeer 0.1.1	10.0 / 17	true	Platform thread
flutter_jailbreak_detection	1.10.0 (2023-01)	IOSSecuritySuite, no version pin	RootBeer 0.1.0	10.0 / 17	true	Platform thread
root_jailbreak_guard	1.1.1 (2026-09)	IOSSecuritySuite 2.2+	RootBeer 0.1.2	13.0 / 21	true	Platform thread
jailbreak_root_detection	1.2.3 (2026-08)	IOSSecuritySuite 1.9.x	RootBeer 0.1.1 and custom checks	11.0 / 21	false	Coroutine (Dispatchers.Default)
safe_device	1.4.1 (2026-07)	DTTJailbreakDetection 0.4.0 and custom checks	RootBeer 0.1.1 and custom checks	12.0 / 21	false	Not checked
freerasp	8.2.4 (2026-10)	Talsec SDK	Talsec SDK	13.0 / 23	Not applicable (callback API)	Not applicable

Difference from root_jailbreak_guard

root_jailbreak_guard has the same API as flutter_jailbreak_detection_plus, but its checks are different.

Check	flutter_jailbreak_guard	root_jailbreak_guard
iOS jailbreak	amIJailbroken()	amIJailbroken() or amIDebugged()
iOS developer mode	amIRunInEmulator()	amIRunInEmulator() or amIDebugged()
Android root	isRooted	isRooted or isRootedWithBusyBoxCheck

root_jailbreak_guard returns true for jailbreak when a debugger is attached to the iOS app. This occurs when you run the app from Xcode. flutter_jailbreak_guard returns the same result as flutter_jailbreak_detection_plus.

When to use another package

• If you need more signals, such as Frida, debugger, tampering, or mock location, use jailbreak_root_detection, safe_device, or freerasp.
• If you need a full runtime protection SDK with threat callbacks, use freerasp.
• If your app supports iOS earlier than 13.0 or Android API earlier than 24, this package does not support it.

Migration from flutter_jailbreak_detection_plus

 dependencies:
-  flutter_jailbreak_detection_plus: ^1.10.7
+  flutter_jailbreak_guard: ^0.2.0

-import 'package:flutter_jailbreak_detection_plus/flutter_jailbreak_detection_plus.dart';
+import 'package:flutter_jailbreak_guard/flutter_jailbreak_guard.dart';

-final jailbroken = await FlutterJailbreakDetectionPlus.jailbroken;
-final developerMode = await FlutterJailbreakDetectionPlus.developerMode;
+final jailbroken = await FlutterJailbreakGuard.isJailbroken;
+final developerMode = await FlutterJailbreakGuard.isDeveloperMode;

The detection engines and the fallback values are the same.

Behavior

Failure handling

Native result	Return value
true or false	The same value
null	true
The call fails	Throws PlatformException

The app decides whether a failed check blocks the user.

Threading

• iOS runs the checks on the main thread. IOSSecuritySuite.amIJailbroken() calls UIApplication.shared.canOpenURL.
• Android runs the checks on a background task queue. RootBeer.isRooted reads files and runs su.

Limitations

• On-device checks cannot detect every jailbreak or root. A user with full control of the device can hide it from the app.
• Do not use this package as the only protection for high-risk actions. Add server-side checks.
• On iOS, isDeveloperMode reports only the simulator.

License

This package is available under the MIT License.

iOS engine license

The iOS engine, IOSSecuritySuite, changed its license in version 2.0.

IOSSecuritySuite	License	Cost
1.9.10 to 1.9.11	BSD-2	Free
2.0 and later	EULA	Free only for a company that employs no more than 100 people. Larger companies and companies that sell apps with the library need a paid plan.

⚠️ Important: This package accepts both versions. Without a pin, the app gets the latest 2.x version. Read the EULA before you ship your app.

To use the BSD-licensed 1.9.11, pin it in your app.

CocoaPods: add the pin to ios/Podfile, then run pod update IOSSecuritySuite in the ios folder.

target 'Runner' do
  pod 'IOSSecuritySuite', '1.9.11'
  # ...
end

Swift Package Manager:

1. Open ios/Runner.xcworkspace in Xcode.
2. Select the Runner project, then open Package Dependencies.
3. Add https://github.com/securing/IOSSecuritySuite.
4. Set Dependency Rule to Exact Version 1.9.11.
5. Add the IOSSecuritySuite library to the Runner target.