# UltimateScale vs Chord Progression Lab

The clearest difference is price: UltimateScale at Free against Chord Progression Lab's $0.99. UltimateScale also leads on iOS requirement (14.0 vs 26.5). Chord Progression Lab's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

UltimateScale is free to download; Chord Progression Lab costs $0.99 up front. UltimateScale sells 1 one-off in-app purchase. Chord Progression Lab asks for nothing beyond the download.

## The numbers

| Metric | UltimateScale | Chord Progression Lab |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Size | 60 MB | 2 MB |
| Requires iOS | **14.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bum Tae Yoon](https://appshunter.io/developer/1578285460) | [David Mickey](https://appshunter.io/developer/1506246434) |

## What reviewers say

### UltimateScale

[App page](https://appshunter.io/ios/app/ultimatescale/id1631310626)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1: Remove all ads | $4.99 | one-time |


### Chord Progression Lab

[App page](https://appshunter.io/ios/app/chord-progression-lab/id6778928044)

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

**In-app purchases:** none


## Frequently asked questions

### Is UltimateScale free?

UltimateScale is free to download, with in-app purchases available.

### Is Chord Progression Lab free?

Chord Progression Lab costs $0.99, with no in-app purchases.

### Do UltimateScale or Chord Progression Lab have ads?

UltimateScale shows ads; Chord Progression Lab does not.

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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.*