CrookCatcher - Anti Theft

Contains adsIn-app purchases
61.3K reviews
Content rating
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About this app

Disaster scenario #1: What if your phone got stolen?

With CrookCatcher installed on your phone or tablet, you might have a chance at getting it back!

CrookCatcher hides behind the lockscreen and takes a picture of anyone trying to unlock your device with the wrong pin, password or pattern.

CrookCatcher immediately emails the photo of the crook to you, along with your device’s current GPS location.

So whether your phone gets stolen or your coworker/partner/friend is simply snooping around, with CrookCatcher you always know if you have an intruder!


• Takes photo with secret camera when someone tries to unlock your phone with the wrong code.

• Sends email with photo, GPS coordinates, accuracy, estimated street address, map and link to Google Device Manager with which you can track your device’s location 24/7.

• Works with password, pin code and pattern lock.

• Combined map and photo view to browse pictures inside the app.

• Of course it is completely silent and secret (turn off notifications in settings).

• No battery drain - CrookCatcher only runs when the wrong code is entered.

• Select number of unlock attempts before picture is taken


• More picture combinations
Take 2 pictures with front camera and 2 pictures with back camera.

• Record sound clip
With sound recordings you can learn more about the surroundings and possibly identify voices.

• Sound alarm
Play a custom alarm sound at full volume when the wrong password is put it.

• Alert Message
Show a custom message on the lock screen, when a picture is taken. You could tell the crook to return your phone, or you'll show their picture to the police.

• Detect break in
Take a picture and send alert email if the crook guesses the right password after having failed.

• Retry email
If disconnected from the internet, postpone emails until back online.

• Change email subject
Change email subject text, to avoid crooks seeing revealing notifications

• App lock
Set a pattern lock to access CrookCatcher. Fingerprint can also be used.

• Disguise app
Change app icon and label to look like a Files app, so intruders won't find out you have CrookCatcher installed.

• Hide Notifications
Don't let the crook know that you got him on camera

• No ads
Enjoy an ad-free app and support the development of CrookCatcher.
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Note: This app uses the Device Administrator permission to monitor screen unlock attempts.

Pop up cameras
CrookCatcher does not support pop up cameras.
Updated on
Aug 14, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
61.3K reviews
A Google user
October 30, 2019
I have the free version of this app and given my results i have not been convinced to purchase the full version, let alone keep the free version. After a few days of testing I have determined that this app works less than 10% of the time. I have intentionally and unintentionally entered the incorrect authentication and the app only responded a few times. I have changed the settings and configurations in order to hopefully get better results however it rarely works as advertised.
306 people found this review helpful
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Shadab Uddin
September 15, 2022
I paid for the premium version but, so disappointed due to the following experiences:- The application is having some defects. It doesn't start automatically after a reboot/restart of the phone, hence all permissions are granted. The App becomes active only when the phone is unlocked after reboot/restart. This is a serious error in the build up of this app. Hence, the intruder can get through if it's stolen. At times I have to start the App in a manual way. The developers needs to work on it.
21 people found this review helpful
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Kamal Dey
August 8, 2022
Some issues have to be solved. Some times alarm doesn't work. After restart also the alarm doesn't work. This software should have these options also: Protect from restart and shutdown. Save photos and audio and then send when user is online, or send a text message. Make you software better and stable. For now I m uninstalling.
44 people found this review helpful
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What's new

• New feature: Show fake home screen on wrong password.
Should you be forced to hand over your unlocked phone to someone, with this feature enabled, simply put in a wrong password and a fake home screen will appear, preventing the thief from getting access to your personal data.
• New picture option: 1 front, 1 back
• Bug fixes and layout improvements