# Jazz Progression Trainer vs Crank. Guitar Practice Log

The clearest difference is price: Crank. Guitar Practice Log at Free against Jazz Progression Trainer's $2.99. Crank. Guitar Practice Log also leads on update cadence (every 6 weeks vs every 6 months). Jazz Progression Trainer's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

Crank. Guitar Practice Log is free to download; Jazz Progression Trainer costs $2.99 up front. Crank. Guitar Practice Log sells 2 in-app purchases, starting at $3.99 per month. Jazz Progression Trainer asks for nothing beyond the download.

Jazz Progression Trainer ships an update every 6 months, Crank. Guitar Practice Log every 6 weeks. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Jazz Progression Trainer | Crank. Guitar Practice Log |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Size | 28 MB | 50 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [tabito ozaki](https://appshunter.io/developer/1884003335) | [Ho Sing Chan](https://appshunter.io/developer/6780925329) |

## 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


### Crank. Guitar Practice Log

[App page](https://appshunter.io/ios/app/crank-guitar-practice-log/id6780925327)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crank. Pro | $3.99 | per month |
| Crank. Pro | $29.99 | per year |


## Frequently asked questions

### Is Jazz Progression Trainer free?

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

### Is Crank. Guitar Practice Log free?

Crank. Guitar Practice Log is free to download, with in-app purchases available.

### Do Jazz Progression Trainer or Crank. Guitar Practice Log have ads?

Neither Jazz Progression Trainer nor Crank. Guitar Practice Log shows ads.

### Which is updated more often, Jazz Progression Trainer or Crank. Guitar Practice Log?

Jazz Progression Trainer ships an update every 6 months, and Crank. Guitar Practice Log every 6 weeks. Most recently, Jazz Progression Trainer was updated on October 11, 2026 and Crank. Guitar Practice Log on October 25, 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.*