# LM AUDIO vs Chord Progression Visualizer

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.

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.

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.

## The numbers

| Metric | LM AUDIO | Chord Progression Visualizer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 3 MB | 40 MB |
| Requires iOS | **7.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PT. Kramat Motor](https://appshunter.io/developer/1280833868) | [WABI PLANT](https://appshunter.io/developer/668435822) |

## What reviewers say

### LM AUDIO

[App page](https://appshunter.io/ios/app/lm-audio/id1118657152)

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:** macOS Compatibility

**In-app purchases:** none


### Chord Progression Visualizer

[App page](https://appshunter.io/ios/app/chord-progression-visualizer/id6760151335)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PremiumPlna | $2.99 | per month |
| Premium1Year | $29.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*