Lockwatch — Thief Catcher

Contains adsIn-app purchases
4.5
73.5K reviews
Content rating
Everyone
5M+
Downloads
Content rating
Everyone
Digital Purchases
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About this app

🔐 PROTECT YOUR PHONE

Lockwatch emails you photo or video evidence and your phone's location when someone tries to unlock your phone with the wrong PIN, password or pattern.

Choose photos or a 20-second video clip. Lockwatch sends the evidence to your email so you can quickly see what happened.

Lockwatch can also alert you after your phone powers on or restarts, or when a SIM card is changed.

🔑 CHOOSE YOUR ACCESS

Use all Lockwatch features with the free ad-supported tier, or choose a paid subscription for ongoing ad-free protection.

⚙️ FEATURES

Failed unlock alerts
• Detects failed unlock attempts on your existing Android lock screen
• Captures photos or a 20-second video clip of the intruder
• Emails the evidence along with your phone's location
• Cancels the alert if the correct code is entered within 10 seconds, so a simple mistype will not send an email

SIM and power-on alerts
• Detects SIM changes and emails the location with new SIM details
• Emails location immediately after power-on or restart, before the phone is unlocked

History and reliability
• Saves alert history in the app so you can view, share or delete past alerts
• Automatically retries sending alerts when mobile data or Wi-Fi becomes available
• Stays lightweight by only reacting to key security events, so it will not drain your battery

ℹ️ NOTES

• Lockwatch only triggers when an unlock attempt contains at least four digits, password characters or pattern dots.
• This app uses the Device Administrator permission to monitor screen unlock attempts. Lockwatch will never use this permission to wipe your phone.
Updated on
May 5, 2026

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
This app may collect these data types
App info and performance
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.5
71.8K reviews
A Google user
October 12, 2018
This app is really cool and is for sure worth downloading. It does exactly what it says it's going to do. I downloaded three similar apps at the same time as Lockwatch, all of them claiming to do the same thing. After testing all four apps i quickly deleted them all except Lockwatch. Lockwatch was the best in every category, beating out the competition. I've used it for a few weeks on my Galaxy S7 Edge and I have no plans on getting rid of it. I use it all the time!! Thanks!
294 people found this review helpful
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Matt Blattel
December 20, 2023
Given the one star rating due to the fact that I purchased a year subscription and within a week I'm already having multiple failed login notifications. Yes they have emailed me and yes they show location. What they don't show is a picture, simply a blank square. And there is absolutely no link for tech support, not even on the website.
56 people found this review helpful
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Meg Reed
July 23, 2022
I installed this, set up the email, set permissions, etc, then tested it to see if it would send an email of me trying to incorrectly unlock my phone. It didn't. But I thought maybe it needed some time to send the email. I tried a few more times, then went to bed. In the morning there were still no emails. I checked my spam folder and everything. Nothing. This app was completely useless to me.
212 people found this review helpful
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What’s new

- Lockwatch supports a new 20-second video capture mode with sound.
- History screen shows an inline map and allows deleting individual alerts.