6 months
Try it out.
€29.99
One payment · never renews
- Police, ambulance & fire alerts
- Unmarked cars too
- Setup help included
- Automatic updates
- Starts when you activate
Police detector for Android
Know where the police are. Before they see you.
Your phone beeps when a police car, ambulance or fire truck near you uses its radio. Unmarked police cars too.
You also need a small radio kit, sold separately. It just plugs together. See the kit
- Ready in 2 minutes
- Delivered instantly by email
- Pay once, no subscription
Try the app right here
Tap the buttons, scroll and open Settings — it’s live.
Tetra Hunter
Stopped
Rotate phone for fullscreen.
RX1
380.000 - 382.500 MHz● Idle
Status: stopped | margin 12 - 33 dB | IQ --
RX2
382.500 - 385.000 MHz● Idle
Status: stopped | margin 12 - 33 dB | IQ --
RX1 FLOOR--
RX2 FLOOR--
MODECITY
Spectrum / waterfall
No receiver connected
Debug
RX1
Waiting for RX1 diagnostics
RX2
Waiting for RX2 diagnostics
System
Waiting for system diagnostics
Detector Main Settings
City mode thresholds
Alarm sound outputBluetooth uses connected audio; otherwise phone.
Advanced Detector Settings
If you get false positives, talk with Letoa93 on Discord before touching receiver gain.
Blacklist list filePermanent muted MHz lines.
RTL-SDR Devices
Max span: 2.56 MHz per receiver.
General settings
RGB 255, 0, 0
Accent color.
Tetra Hunter colors are entirely customizable
RGB 255, 0, 0
How does it work?
Plug it in, drive, and hear the beep before the police reach you.
Why drivers pick Tetra Hunter
- Warns you up to 1 km away
- Spots unmarked police cars
- Zero false alerts
- Works offline, no data needed
- Automatic updates included
- Sleek design, your colors
How it works
On the road in 2 minutes.
- 1
Get the kit
Pick a plan and order the radio kit. The app arrives by email right away.
- 2
Plug in & activate
Plug the kit into your phone and type your code.
- 3
Drive
Press Start. A beep means police are near. Eyes stay on the road.
Pricing
Pick your plan
Pay once. No subscription.
Recommended
1 year
For daily drivers.
€49.99
One payment · never renews
- Police, ambulance & fire alerts
- Unmarked cars too
- Setup help included
- Automatic updates
- Starts when you activate
Lifetime
Pay once. Done forever.
€89.99
Pay once, keep it forever
- Police, ambulance & fire alerts
- Unmarked cars too
- Setup help included
- Automatic updates for life
- Never expires
One payment. Delivered instantly by email. Your plan starts when you activate it.
FAQ
Questions?
Does the app get updates?
Does it detect unmarked police cars?
Yes. An unmarked car carries the same radio as a marked one, and that radio sends a short signal every few seconds to stay connected, even when nobody is talking. That’s what Tetra Hunter picks up.
Is the setup hard?
No. You plug or screw the parts together: no tools, no soldering, nothing fitted to your car. About 2 minutes. Stuck? Message us: we get you running, or refund you.
How do I get it?
Pick a plan on the pricing page and pay securely with Stripe. Right after payment, an automatic email brings you the app and your licence key.
Join the community
Meet other drivers, see their setups and get help fast.
Ready to drive?
Hear the beep before you see the lights.
Plugged in and running in 2 minutes. Pay once from €29.99.