DecibelDockSound level meter
DecibelDock's main meter shows a live approximate sound level on a performance gauge, with session min, average, max and peak hold. It is designed to …
191Labs LLC · Android
DecibelDock
Performance sound instrument for Android.
A readable approximate dB meter with Frequency Finder and Tuner, Doppler speed, flash-to-bang Distance, Direction, Identify and Spectrum — designed with honest limits, local history and no ads.
Coming soon toGoogle Play
Explore features
Free basic meter · 2-week advanced preview · Optional one-time Pro · No ads, no accounts
Listing placeholder — Play URL will be added at launch (see LAUNCH.md).
Tools
A sound toolbox that stays honest
Every tool is built for exploration and comparison on a phone — with plain-language limits instead of inflated claims.
Frequency Finder
Frequency Finder shows the live main frequency in hertz when the tone is clear. Use it for hums, fans, notes and pitched sounds — and switch into Tune…
Instrument tuner
Tuner mode lives inside Frequency Finder. Pick Chromatic or an instrument preset, watch the cents needle, and adjust A4 from 430 to 450 Hz.…
Doppler speed
Doppler listens for a pitch drop as a vehicle passes a stationary phone and turns that into a rough speed estimate. It is educational, not radar.…
Distance
Distance times the gap between a flash you see and the boom you hear. Use Lightning or Fireworks mode. Tap timing stays simple; automatic mode uses th…
Direction
Direction helps you find where a sound is louder. Calibration maps levels as you turn; then the meter can follow the loudest live heading. It is appro…
Identify
Identify listens on the device and shows best-guess labels for what it hears. Scores are model likelihoods, not certainty. Mixed sounds and phone proc…
Spectrum
Spectrum expands on the main console instead of opening a separate dead-end screen. See frequency strength, freeze a trace, and view octave bands whil…
History & privacy
DecibelDock keeps tool history on your phone. Audio processing stays on the device. Optional recordings are off by default, and clips never upload the…
Styles & themes
DecibelDock separates how the meter is drawn from which color theme you use. Pick a style that fits the job, then a theme that fits the mood.…
Look & feel
Seven meter styles · six themes
Styles are separate from color themes. Each tool can keep its own default style. Performance Gauge is the factory look.
Classic Dial
Meter style
Half-moon VU
Meter style
Bar Ladder
Meter style
Linear Strip
Meter style
Big Digital
Meter style
Horseshoe
Meter style
Radar Ring
Meter style
Performance GaugeWorkshopStudio MonitorTest BenchRedlineCobalt
Honest limits
Built to say when it does not know
Phone mic ceiling
Most phone mics cannot measure much above about 120 dB. DecibelDock warns when the mic is overloaded.
Approximate tools
Direction, Doppler and Distance are approximate and depend on your phone. Written reasons appear when a result cannot be trusted.
Not for compliance
Not a calibrated meter. Not for medical, hearing-safety, occupational-safety or legal-evidence use.
Pricing
Basic meter free. Advanced tools: preview, then one-time Pro.
No ads. No subscription. Confirm the live Play price when the listing ships.
Free
$0
- Basic live sound level meter forever
- 2-week preview of advanced tools
- Simple daily use counts during preview
- At preview end: keep one advanced tool free for another month
- View, export and delete saved history
Launch sale
Pro
$4.99 launch · then $7.99
- One-time unlock (no subscription)
- Unlimited advanced tools after preview
- Frequency, Tuner, Spectrum, Doppler, Distance, Direction, Identify
- Restore via Google Play
Prices are planned store pricing. The app shows Play's localized price when available. Product decibeldock_pro is created in Play Console only with Bill's OK.
Learn
Guides that answer real questions
Educational articles on decibels, weighting, phone limits, tuning, Doppler, flash-to-bang and more — each linking into the feature pages.
FAQ
Common questions
Is DecibelDock a calibrated sound level meter?
No. It is an approximate phone meter for comparison and exploration. It is not calibrated or certified, and it is not for medical, hearing-safety, legal or compliance use.
What does the two-week preview include?
Advanced tools are available during a two-week preview with simple daily use counts (five uses per advanced tool per day, resetting at local midnight). After that, the basic meter stays free forever. Advanced tools need the one-time Pro unlock, or you can pick one advanced tool to keep free for another month.
How much is Pro?
Pro is a one-time unlock planned at $7.99 regular price with a $4.99 launch sale. Confirm the live price in Google Play when the listing is live. No subscription.
Does DecibelDock upload my audio?
Audio processing stays on your phone. Optional recordings are off by default and stay on the device unless you explicitly export them. 191Labs does not collect readings, audio or camera images. Buying Pro uses Google Play Billing.
Why does the meter stop around 120 dB?
Most phone microphones overload near that region. A taller scale would not create more trustworthy absolute readings. DecibelDock warns when the mic is overloaded.
Are Direction, Doppler and Distance reliable estimates?
No. They are approximate and depend on your phone. Direction depends on the mics; Doppler is not radar; Distance is not a lightning safety tool. The app shows written limits and rejection reasons when it cannot trust a result.
Coming soon to Google Play
DecibelDock is in active QA. The public listing and install button go live when Bill approves launch.
Coming soon toGoogle Play