Breach WD: Data Breach Monitor

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Content rating
Everyone
50+
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Everyone
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About this app

Breach Watchdog: Monitor your email, passwords, and domain against data leaks. No account needed, install and get started immediately.

The only app that combines three independent sources (Have I Been Pwned, LeakCheck, and XON) for the most complete view of your digital risk.

🔒 PRIVACY FIRST
We don’t store your email address in our database. Passwords never leave your device (k-anonymity method). All data you add, such as monitored addresses, is encrypted and stored locally on your device.

📡 DATA LEAK MONITOR
Add email addresses: Breach Watchdog checks them regularly for new data leaks and notifies you as soon as something is found, with a homescreen widget that shows at a glance if action is needed.

🔍 EMAIL DATA LEAK CHECK
See in which data leaks your email address has been found, which data was exposed (passwords, phone numbers, addresses, financial details, and more), and receive personalized action advice per leak.

📊 RISK SCORE
A personal risk score based on your leaked data, unique in its kind. One clear meter shows your risk at a glance, with an attack profile that reveals what cybercriminals could know about you.

🔐 PASSWORD CHECK
Check if your password has been leaked without it ever leaving your device.

🌐 DOMAIN & URL SCANNER
Check if an email domain is protected against spoofing via SPF and DMARC records. Scan suspicious links for phishing and malware before clicking.

🧠 SMART ADVICE
Not every data leak requires the same action. Breach Watchdog recognizes when a platform no longer exists or a leak is years old and adjusts the advice accordingly. No unnecessary notifications, only relevant information.

💡 SECURITY TIPS
Practical tips on passwords, two-factor authentication, phishing, VPNs, SIM swapping, and more.

Free: Unlimited email scans, view your risk score and attack profile immediately, plus 1 free monitored email address with weekly checks. For the full report (which data leaks your information was found in and what you can do), you’ll need Pro. Password checks, domain checks, and URL scans are also unlimited.

💎 BREACH WATCHDOG PRO: €4.99 one-time payment, forever

• Up to 10 monitored email addresses
• Full report with every scan
• Save and export reports (PDF)
• Alerts for new data leaks
• Homescreen widget

One-time purchase, no subscription.

Powered by Have I Been Pwned · LeakCheck · XON · AppDev020
Data breach check & monitor, email leak checker, password leak, hack check
Updated on
Aug 23, 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
    Personal info, App info and performance, and Device or other IDs
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new


Bug fixes and improvements.
Content rating
Everyone
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App support

About the developer
Martijn S. Verharen
appdev020@proton.me
Gloriantstraat 8H 1055 CT Amsterdam Netherlands

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