Pry-Fi

When Your Phone Talks About You Without Permission

Imagine walking into a coffee shop, and your phone starts broadcasting the names of every Wi-Fi network you've ever connected to—your home router, your office guest network, that hotel you stayed at last year. This isn't a glitch; it's a default behavior baked into Android's Wi-Fi stack. Most users never even know it's happening. Pry-Fi, built by Chainfire—the same developer behind the legendary SuperSU root tool—gives you back control. It stops your device from leaking network identifiers to anyone listening, without breaking your ability to connect when you actually want to.

What Pry-Fi Actually Does

The core problem is that Android's "background scanning" feature continuously probes for known networks, even when Wi-Fi is supposedly turned off. This constant beaconing reveals your location history, network preferences, and device identity to any nearby observer with a cheap packet sniffer. Pry-Fi intercepts this at the system level, completely blocking all unsolicited probe requests. When you activate the app, your device goes silent—it stops announcing itself and its known networks entirely. Crucially, you can still manually connect to any Wi-Fi network you choose. The app simply prevents automatic background leakage while preserving full connectivity when you initiate a connection.

• Stops all passive Wi-Fi probe requests
• Preserves manual connection capability
• Works at root-level system interception
• No ads or background data collection
• One-tap activation toggle

Technical Details You Need to Know

This isn't a simple toggle in developer options. Pry-Fi hooks directly into the Wi-Fi driver and supplicant layer, requiring root access to function. Without root, the app cannot intercept the low-level probe requests that happen before the OS even reports Wi-Fi as "enabled." The app runs as a persistent background service with minimal battery impact—Chainfire optimized it to use less than 1% additional battery over a full day of use. The interface is deliberately minimal: a single on/off switch, a status indicator showing whether interception is active, and a log viewer that shows blocked probe attempts in real time.

Who Benefits Most

This app is essential for anyone who regularly connects to public Wi-Fi networks—airports, hotels, cafes, conference centers, university campuses. These environments are precisely where attackers set up rogue access points to capture probe requests. But it's also valuable for privacy-conscious home users who don't want their device broadcasting "I'm looking for [HomeNetwork]" every few seconds while they're walking down the street. Business travelers, security researchers, and anyone who values operational security will find this tool indispensable.

Download Pry-Fi Now

Exclusive access for first users: grab the latest build before the next update cycle. Limited availability on the Play Store—Chainfire's tools tend to get pulled quickly due to Google's changing policies on root-access apps.

Heads up: You'll need a rooted device for Pry-Fi to work—no exceptions. The app does require SuperSU or Magisk installed. Some advanced logging features may require additional permissions. No internet connection is needed for core functionality.