# Jazz Progression Trainer vs Scale Runner

The clearest difference is price: Scale Runner at Free against Jazz Progression Trainer's $2.99. Scale Runner also leads on update cadence (every 9 days vs every 6 months) and device support (4 vs 1). Jazz Progression Trainer's advantage is in-app purchases (none vs 1). On ads and iOS requirement there is nothing between them.

Scale Runner is free to download; Jazz Progression Trainer costs $2.99 up front. Scale Runner sells 1 one-off in-app purchase. Jazz Progression Trainer asks for nothing beyond the download.

Jazz Progression Trainer ships an update every 6 months, Scale Runner every 9 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Jazz Progression Trainer | Scale Runner |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 9 days** |
| Size | 28 MB | 36 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [tabito ozaki](https://appshunter.io/developer/1884003335) | [C1GNUS STUD1O](https://appshunter.io/developer/6795326950) |

## What reviewers say

### Jazz Progression Trainer

[App page](https://appshunter.io/ios/app/jazz-progression-trainer/id6761685294)

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

**In-app purchases:** none


### Scale Runner

[App page](https://appshunter.io/ios/app/scale-runner-piano-practice/id6795850810)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scale Runner Pro | $14.99 | one-time |


## Frequently asked questions

### Is Jazz Progression Trainer free?

Jazz Progression Trainer costs $2.99, with no in-app purchases.

### Is Scale Runner free?

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

### Do Jazz Progression Trainer or Scale Runner have ads?

Neither Jazz Progression Trainer nor Scale Runner shows ads.

### Which is updated more often, Jazz Progression Trainer or Scale Runner?

Jazz Progression Trainer ships an update every 6 months, and Scale Runner every 9 days. Most recently, Jazz Progression Trainer was updated on October 31, 2026 and Scale Runner on November 6, 2026.

---

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