Comparison

LM AUDIO vs Open Sound Meter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

LM AUDIO

This application allows users to control various audio settings for car amplifiers with integrated DSP. Adjust EQ, bass, 3D sound, time alignment, and filters. Save and load sound settings directly from your phone or the amplifier.

Highlights
  • DSP control
  • EQ adjustment
  • Bass and 3D sound settings
  • Time alignment
  • Filter control
  • Save sound settings to phone
  • Save sound settings to amplifier
Features
Read full description

After connecting App to Car Amplifier with Integrated DSP,  EQ, BASS, 3D SOUND,TIME ALIGNMENT, PHASE, MUTE, FILTER , SAVE SOUND SETTING TO PHONE, SAVE SOUND SETTING TO AMPLIFIER, LOAD SOUND SETTING FROM PHONE, RCA OUTPUT etc could be controlled through this App. How to use: 1.Install App and turn on power of car 2. Turn on Bluetooth on your iPhone 3,Open App and wait for around 5 seconds, then click “Connect” icon in left corner of bottom. Amplifier will be connected to App automatically. 4.DIY you preferred sound and then click “Save to AMP” icon to save. Or click “ Save to Phone” to save.   Note: 1.Do not exit app during saving and do not turn off power supply, program may be shut down caused by this.

About

Open Sound Meter

This application allows real-time tuning and control of audio systems. It provides comprehensive measurement and analysis tools for various audio parameters, with options to store, adjust, and average results. Calibration files and direct console connections enhance measurement accuracy.

Highlights
  • Real-time audio system tuning
  • Spectrum, SPL, Magnitude, Phase analysis
  • Store, adjust, and average measurements
  • Apply calibration files for microphones
  • Direct connection to mixing consoles
  • Project saving to device or iCloud
Features
Read full description

Open Sound Meter is an application for tuning and controlling audio systems in real-time. Allows to measure and analyze: - Spectrum - SPL (RMS, Leq) - Magnitude - Phase - Group delay - Phase delay - Coherence - Impulse - Step - Spectrogram - Impedance - Nyquist plot - Crest factor You can store any result. Stored measurement can be adjusted by gain, delay and polarity, adjusted with filters, equalization. Math function gives you a possibility to average your measurements, virtually join them and predict how they will sound together. For better results, you can apply calibration files for your microphones. For the measurement, you can use any iOS compatible audio interface or connect to your mixing console. Save the project on the device or in iCloud. Direct connection works with Behringer X32, Midas M32, Allen&Heath Qu, DiGiCo S21/S31/SD12/UB-MADI, Yamaha TF and other consoles that have audio over USB. For Yamaha CL/QL you can use Dante AVIO adapter.

Screenshots

LM AUDIO4 screens
Open Sound Meter1 screens

Verdict

The call

The clearest difference is review sentiment: Open Sound Meter at 100% against LM AUDIO's 0%. LM AUDIO's advantage is price (Free vs $69.99) and iOS requirement (7.0 vs 12.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

LM AUDIO is free to download; Open Sound Meter costs $69.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

LM AUDIO ships an update every 3 months, Open Sound Meter every 2 months. The most recent releases landed on June 4, 2026 and September 11, 2026 respectively.

Scorecard4 real differences · 6 level
LM AUDIO versus Open Sound Meter: the parameters behind the verdict, then further details
ParameterLM AUDIOOpen Sound Meter
PriceFree — better$69.99
Rating—5.0 (5 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings—5 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.0 — better12.0
Further details — not scored
Size3 MB45 MB
Age rating4++4
DeveloperPT. Kramat MotorPavel Smokotnin

Customer experience

LM AUDIO

Written reviews5 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Open Sound Meter

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

LM AUDIO

No in-app purchases

None

Open Sound Meter

No in-app purchases

Questions

Is LM AUDIO free?
LM AUDIO is free to download, with no in-app purchases.
Is Open Sound Meter free?
Open Sound Meter costs $69.99, with no in-app purchases.
Do LM AUDIO or Open Sound Meter have ads?
Neither LM AUDIO nor Open Sound Meter shows ads.
Which is updated more often, LM AUDIO or Open Sound Meter?
LM AUDIO ships an update every 3 months, and Open Sound Meter every 2 months. Most recently, LM AUDIO was updated on June 4, 2026 and Open Sound Meter on September 11, 2026.

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