Closed test
Network Gangster
Android RF field awareness. Wi-Fi, cell, BLE, map rings. On-device. Closed test.
Live product
Open site →
Field software
Field software that stays on your device.
Muster Defense builds tools for the field. Scans, maps, and notes stay on the phone unless you export. We sell apps, not data. Veteran-owned. Not a government app.
Releases
Products
Thirteen tools. On-device by default. No required account. Direct APKs are debug builds for sideloading — production store is off for apps still in development.
Drag the deck · Arrow keys cycle sleeves
Closed test
CRE tax
Live web
Parcel Roll
CRE owed-tax roll. Live coverage by state — Arizona: 14 live + 1 county-site link (15 of 15 counties) · California: 48 live + 10 county-site links (58 of 58 counties) · Florida: 66 live + 1 county-site link (67 of 67 counties) · Georgia: 32 live + 127 county-site links (159 of 159 counties) · Texas: 99 live + 155 county-site links (254 of 254 counties). Never invents amounts. Stripe checkout not live yet.
From $249/mo · Demo unlock
Open app →
Journal
Not for sale yet
Ground Truth
Private field journal: photo, place, when, one tag, a note. PIN. Stays on the device. Not for sale on Play yet.
$9.99 one-time · later
hello@ →
Permit
Not for sale yet
Hot Work Pad
Tonight's hot-work permit and a fire-watch clock you cannot skip. PDF. On the phone. Not for sale on Play yet.
$24.99 one-time · later
hello@ →
On sale
$39
Visit Reel
Drop a folder of photos. Timeline HTML and PDF on your computer. Nothing uploads.
One-time · Desktop
Buy $39 →
Genset log
$24.99
Lawn spray
$19.99
Spray Sheet
Crew spray pad and a yard report the customer can see. Photos + mix. On-device.
$19.99 one-time
hello@ →
Bump test
$19.99
Eye-wash
$9.99
Webbing
$14.99
Catch basin
$24.99
Post-storm
$19.99
Fire pump
$24.99
Pump House
Fire-pump no-flow log. Unskippable 10-min electric / 30-min diesel clock. On-device.
$24.99 one-time
hello@ →
Company
Roster
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.
Field software people can trust because it does not phone home.
Principles
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.
We sell software, not your scans
We charge for the app. We do not sell what you scan, where you went, or who you watched.
Authorized use only
Use it where you have a right to be. The software does not grant permission you do not already have.
Catalog
| Product | Status | Price | Notes |
|---|---|---|---|
| Network Gangster | Live · Closed test | Free + $4.99 ads-off | On-device RF. networkgangster.app |
| Parcel Roll | Live web | From $249/mo | CRE owed-tax roll. Live coverage by state — Arizona: 14 live + 1 county-site link (15 of 15 counties) · California: 48 live + 10 county-site links (58 of 58 counties) · Florida: 66 live + 1 county-site link (67 of 67 counties) · Georgia: 32 live + 127 county-site links (159 of 159 counties) · Texas: 99 live + 155 county-site links (254 of 254 counties). Never invents amounts. Stripe checkout not live yet. parcel-roll.pages.dev · hello@ |
| Visit Reel | On sale | $39 one-time | Desktop. Nothing uploads. Product page |
| Ground Truth | Not for sale on Play yet | $9.99 one-time | Private field journal: photo, place, when, one tag, a note. PIN. Stays on the device. Not for sale on Play yet. hello@ |
| Hot Work Pad | Not for sale on Play yet | $24.99 one-time | Tonight's hot-work permit and a fire-watch clock you cannot skip. PDF. On the phone. Not for sale on Play yet. hello@ |
| Gen Pad | Not for sale on Play yet | $24.99 one-time | Genset run log. Unskippable 30-minute clock. Photos, gauges, PDF or CSV. On-device. hello@ |
| Spray Sheet | Not for sale on Play yet | $19.99 one-time | Crew spray pad and a yard report the customer can see. Photos + mix. On-device. hello@ |
| Bump Pad | Not for sale on Play yet | $19.99 one-time | Bump test log with an unskippable 30-second clock. On-device. hello@ |
| Eye Flush | Not for sale on Play yet | $9.99 one-time | Eye-wash log with an unskippable one-minute clock. On-device. hello@ |
| Web Check | Not for sale on Play yet | $14.99 one-time | Daily webbing check. Photos and a pass/fail. No clock. On-device. hello@ |
| Catch Pad | Not for sale on Play yet | $24.99 one-time | Catch-basin / dike inspection pad. Photos, condition, action taken, PDF. On-device. hello@ |
| Rain Walk | Not for sale on Play yet | $19.99 one-time | Post-storm walk log. Photos of what the rain moved. On-device. hello@ |
| Pump House | Not for sale on Play yet | $24.99 one-time | Fire-pump no-flow log. Unskippable 10-min electric / 30-min diesel clock. On-device. hello@ |
Direct APK downloads are debug builds for sideloading. Play production is off. Public CTA is the product page, web pad, or hello@musterdefense.com — not a debug APK.
Contact
Build with us.
Or buy the tool and go.
Product support / testers: feedback@networkgangster.app