Grasshopper · by DOGS

FIND
THE
BUGS.

A $299 spectrum analyzer for regular people. It snaps onto your phone and runs off its battery — then sweeps any room for hidden cameras, microphones, and trackers.

See what it finds
scroll

01 · The problem

Every room
is talking.

Wi-Fi. Bluetooth. Cellular. LoRa. Every wireless device screams on its own frequency, whether you invited it or not. Grasshopper hears all of it.

87 MHz▲ LIVE SWEEP (SIM)5.8 GHz

02 · The hit list

If it phones home,
it's found.

📷

Hidden Wi-Fi cameras

2.4 / 5 GHz video streams, even on "your" network.

🎙️

Listening bugs & mics

VHF / UHF audio transmitters planted in the room.

📍

Bluetooth trackers

BLE beacons slipped into bags, cars, coat linings.

📶

Cellular / SIM devices

4G cameras and GPS trackers with their own data plan.

📡

LoRa & sub-GHz sensors

433 / 868 / 915 MHz long-range chatter.

🕵️

Rogue hotspots & stingrays

Fake towers and evil twins harvesting your phone.

And the ones you haven't thought of: Zigbee · Z-Wave · DECT cordless · drones · RFID skimmers · IR night-vision · laser mics · smart-home chatter. New signatures ship as free updates — the hit list never stops growing.

03 · Consumer-first

Built for humans,
not operatives.

No engineering degree. No laptop. No cryptic waterfall graphs. Grasshopper speaks plain English and points at the wall.

1

Snap it on

Plug Grasshopper into your phone's USB-C port. It sips power from the phone battery — nothing else to charge, ever.

2

Walk the room

The hot/cold meter guides you — stronger signal, closer bug. Your phone is the screen.

3

Read the verdict

"Camera-like device, 2.4 GHz, about 6 feet away." Done.

✓ 43 known devices ignored (your phone, your TV…)
▲ UNKNOWN 2.4 GHz VIDEO — 6 ft — CHECK THE SMOKE DETECTOR
✕ BLE tracker following you for 20 min

04 · Hardware

It lives
on your phone.

Grasshopper is a pocket dongle, not a second gadget. Your phone is the screen, the brain, and the battery.

ANTENNAS multiband whip + PCB RF FRONT-END SDR ¡ sub-GHz ¡ BLE ¡ cellular PROCESSOR ESP32-S3 ¡ signal DSP USB-C OTG power + data YOUR PHONE app ¡ display ¡ battery

Draws about 1 W — a full-room sweep costs under 5% of your phone battery. Android first; iPhone via USB-C.

Parts list & diagrams

05 · The product

Privacy
you can hold.

We're inventing the category: the consumer bug sweeper. Pro-grade RF analysis, priced like a gadget, designed like a toy.

Grasshopper

$299
  • Wi-Fi / BT / BLE sweep
  • Sub-GHz: 433 / 915 MHz
  • Hot/cold proximity meter
  • Free signature updates

Grasshopper Pro

$399
  • Everything in Grasshopper
  • Full cellular band sweep
  • LoRa 868 MHz + drones
  • Evidence export for reports

In development — first run targeted 2027 (projection). Specs subject to change as the hardware firms up.