Loud cars hate receipts.

Boom Catcher listens for the next screaming exhaust. When it passes 88 dB, your phone catches it on video — timestamped, geotagged, and city-council-ready.

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2,847
on the list
88 dB
auto-trigger
0 sec
you have to react
FIG. 01 → LIVE CAPTURE
● CAPTURING EVIDENCE
How it works

Three steps between you and a quieter block.

STEP 01 OLD PHONE · PLUGGED IN

Mount an old phone.

That iPhone or Android in your drawer? Plug it in by the window, mount it, tap ARM. Boom Catcher listens in the background. Your daily phone stays in your pocket.

STEP 02 AUTO · 8s · 4K · GPS

Something loud rolls by.

Modified exhaust hits 88 dB. Boom Catcher auto-captures a short clip with the offender centered in frame.

STEP 03 PDF · EMAIL · CSV

File it. Or flood the inbox.

Review, timestamp, and export as videos or screen captures. Demonstrate the problem so elected officials start making changes.

The number

88 dB isn't arbitrary.
It's the line they're crossing.

Most US states set pass-by vehicle noise limits between 80 and 95 dB. Modified exhausts routinely crack 100. Boom Catcher logs the exact number — so the conversation stops being "it's loud" and starts being evidence.

FOOTNOTE · THE LOG SCALE

Decibels are logarithmic. That means every +10 dB is 10× the acoustic energy — and sounds roughly twice as loud to your ear.

60 dB
conversation
90 dB
1,000× the energy
100 dB
10,000× the energy

A single modified exhaust at 100 dB drowns out ten thousand conversations at 60. "It's just one guy" isn't just one guy.

110
Chainsaw at 3 ft
95
Modified exhaust, pass-by
88
Most state legal limit for vehicles
85
Hearing damage begins (sustained)
75
Vacuum cleaner
60
Conversation
40
Library
* SOURCE: STATE DMV NOISE STANDARDS, NIOSH · A-WEIGHTED, 50 FT PASS-BY