Comparison

LM AUDIO vs M2DX

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

M2DX

Create music with a powerful 6-operator FM synthesizer. Explore hand-crafted presets or import classic DX7 banks. Use the on-screen keyboard or connect MIDI controllers for a versatile music-making experience.

Highlights
  • 6-operator, 32-algorithm FM synthesis
  • On-screen keyboard with velocity control
  • DX7-format .syx bank import
  • 6-stage FX chain
  • AUv3 plug-in support
  • Native MIDI 2.0 support
Features
Read full description

M2DX is a 6-operator, 32-algorithm FM synthesizer for iPhone, built from the ground up in pure Swift 6. Open it and play immediately — tap the built-in on-screen keyboard and start making sound with M2DX's own hand-crafted presets. No external hardware or MIDI controller is required. The FM engine is a bit-exact port of the open-source Dexed / msfa DSP, verified sample-for-sample against the reference. It is also compatible with the classic DX7 patch format: bring your own DX7-format .syx banks and play them alongside M2DX's originals. KEY FEATURES - Built-in on-screen keyboard with velocity and octave control — play standalone, no hardware needed - 6-operator, 32-algorithm DX7-style FM synthesis - M2DX's own original FM presets, plus DX7-format .syx bank import (bring your own) - A 6-stage FX chain: EQ, Drive, Chorus, Reverb, Stereo, Maximizer - Low-latency audio with AVAudioSourceNode direct rendering - AUv3 plug-in — use M2DX as an Audio Unit (AUv3) in compatible hosts OPTIONAL MIDI (not required to use the app) - Connect any MIDI controller over Bluetooth or USB if you have one - Native MIDI 2.0 — UMP with 16-bit velocity and 32-bit controllers - MIDI-CI Property Exchange — patch names appear on compatible controllers (for example, KORG KeyStage) - MIDI Learn for hands-on control MIDI 2.0 done natively, classic FM done faithfully. The FM engine is built on Dexed / msfa (Apache License 2.0). M2DX is an independent product and is not affiliated with, endorsed by, or sponsored by Yamaha Corporation. DX7 and Yamaha are trademarks of Yamaha Corporation. iOS 18 or later.

Screenshots

LM AUDIO4 screens
M2DX4 screens

Verdict

The call

The clearest difference is in-app purchases: LM AUDIO at none against M2DX's 1. LM AUDIO also leads on iOS requirement (7.0 vs 18.0). M2DX's advantage is update cadence (every 2 days vs every 3 months) and review sentiment (25% vs 0%). On price, ads, monetization model 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

Both are free to download. M2DX sells 1 one-off in-app purchase. LM AUDIO asks for nothing beyond the download.

UpkeepUpdate frequency

LM AUDIO ships an update every 3 months, M2DX every 2 days. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
LM AUDIO versus M2DX: the parameters behind the verdict, then further details
ParameterLM AUDIOM2DX
PriceFreeFree
Rating—3.7 (3 ratings) — better
Positive reviews0.0% of reviews25.0% of reviews — better
Number of ratings—3 — better
Update frequencyEvery 3 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS7.0 — better18.0
Further details — not scored
Size3 MB16 MB
Age rating4+4+
DeveloperPT. Kramat MotorHakaru Hirose

Customer experience

LM AUDIO

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

M2DX

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews4 reviews
Positive25.0%
Neutral75.0%
Negative0.0%

In-app purchases

None

LM AUDIO

No in-app purchases

1 purchases

M2DX

One-time1
  • M2DX Pro Unlock$9.99

Questions

Is LM AUDIO free?
LM AUDIO is free to download, with no in-app purchases.
Is M2DX free?
M2DX is free to download, with in-app purchases available.
Do LM AUDIO or M2DX have ads?
Neither LM AUDIO nor M2DX shows ads.
Which is updated more often, LM AUDIO or M2DX?
LM AUDIO ships an update every 3 months, and M2DX every 2 days. Most recently, LM AUDIO was updated on October 5, 2026 and M2DX on October 8, 2026.

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