Comparison

LM AUDIO vs Chord Progression Visualizer

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

Chord Progression Visualizer

Features
Read full description

“Audition every chord and craft progressions — all with two thumbs, under the covers.” Build chord progressions visually. Visual Chord Planner makes harmony clear. Stop guessing your next chord. Visual Chord Planner color-codes your chord progression so you can hear and see your music come together — fast. ■ Design chord progressions your way Every chord type across all 12 keys, on one screen. Circle of Fifths color-coding shows which chord sounds right next in your progression — no theory degree needed. ■ Sketch, record, and refine Tap to audition → add to sequencer → loop. Turn chord progression ideas into structured arrangements instantly. Adjust BPM and key to explore new variations. ■ MIDI export to your DAW Finalize your chord progression, then export MIDI directly to any DAW. Keep your creative flow going from idea to finished track. --- Premium unlocks: · 19 chord types · 19 timbres (2 free) · Unlimited project saves · MIDI export · Ad-free --- Built for: · Songwriters who want to try out chord progressions fast · Producers and beatmakers looking for fresh harmonic ideas · Guitarists and pianists building a chord progression vocabulary · Anyone bridging ideas to arrangement without hitting theory walls - Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy Policy: https://honorable-income-bde.notion.site/Visual-Chord-Planner-31b0dbff99c280b3a614f1ed74bd0f0c

Screenshots

LM AUDIO4 screens
Chord Progression Visualizer4 screens

Verdict

The call

The clearest difference is in-app purchases: LM AUDIO at none against Chord Progression Visualizer's 2. LM AUDIO also leads on ads (none vs shown) and iOS requirement (7.0 vs 16.0). Chord Progression Visualizer's advantage is update cadence (fortnightly vs every 3 months). On price 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. Chord Progression Visualizer sells 2 in-app purchases, starting at $2.99 per month. LM AUDIO asks for nothing beyond the download.

UpkeepUpdate frequency

LM AUDIO ships an update every 3 months, Chord Progression Visualizer fortnightly. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 4 level
LM AUDIO versus Chord Progression Visualizer: the parameters behind the verdict, then further details
ParameterLM AUDIOChord Progression Visualizer
PriceFreeFree
Positive reviews0.0% of reviews—
Update frequencyEvery 3 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS7.0 — better16.0
Further details — not scored
Size3 MB40 MB
Age rating4+4+
DeveloperPT. Kramat MotorWABI PLANT

In-app purchases

None

LM AUDIO

No in-app purchases

2 purchases

Chord Progression Visualizer

Subscriptions2
  • PremiumPlna$2.991 Month
  • Premium1Year$29.991 Year

Questions

Is LM AUDIO free?
LM AUDIO is free to download, with no in-app purchases.
Is Chord Progression Visualizer free?
Chord Progression Visualizer is free to download, with in-app purchases available.
Do LM AUDIO or Chord Progression Visualizer have ads?
Chord Progression Visualizer shows ads; LM AUDIO does not.
Which is updated more often, LM AUDIO or Chord Progression Visualizer?
LM AUDIO ships an update every 3 months, and Chord Progression Visualizer fortnightly. Most recently, LM AUDIO was updated on October 5, 2026 and Chord Progression Visualizer on October 3, 2026.

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