On-device by default
Scans, maps, and notes stay on the phone. The app works without a cloud account. If data leaves the device, you choose that.
Muster Defense
Muster Defense
Veteran-owned
Muster Defense builds field software that stays on your device. See the air around you. Keep a private record of what changed. We sell apps, not data. Veteran-owned. Not a government app.
Android RF field tool. Wi-Fi, cell, BLE path, map rings, watch desk. On-device. Closed test.
Email feedback@networkgangster.app with subject Network Gangster tester. We send a Play closed-test invite.
A private field journal for places you walk more than once. Photo, where, when, one tag, a short note. Next visit, see what changed. Stays on your device. No ads. No cloud. No account.
Unlock with a PIN. A second PIN wipes the journal and looks like a fresh install.
Not an RF tool. That is Network Gangster. Ground Truth does not scan Wi-Fi, cell, or BLE, and it does not watch anyone else's phone.
Tonight's hot-work permit and a fire-watch clock you cannot skip. Export a PDF. Stays on the phone. No plant login.
All debug builds · sideload only · not Play
Muster Defense LLC. Founder-led. Veteran-owned.
The name comes from the Revolutionary call to muster: to assemble.
We are not a government app and do not claim official status.
VisionField software people can trust because it does not phone home.
Scans, maps, and notes stay on the phone. The app works without a cloud account. If data leaves the device, you choose that.
We charge for the app. We do not sell what you scan, where you went, or who you watched.
Use it where you have a right to be. The software does not grant permission you do not already have.
App purchases and optional ads-off, plus scoped custom software and IT. We do not sell scan data.