# Jazz Time Trainer vs ARC Score

The clearest difference is in-app purchases: Jazz Time Trainer at none against ARC Score's 2. Jazz Time Trainer also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ARC Score sells 2 in-app purchases, starting at $1.99 per month. Jazz Time Trainer asks for nothing beyond the download.

Jazz Time Trainer ships an update every 4 days, ARC Score every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Jazz Time Trainer | ARC Score |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 19 MB | 15 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sangwoo Shin](https://appshunter.io/developer/6778440317) | [sang hoon lee](https://appshunter.io/developer/6797694140) |

## What reviewers say

### Jazz Time Trainer

[App page](https://appshunter.io/ios/app/jazz-time-trainer/id6778440315)

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

**In-app purchases:** none


### ARC Score

[App page](https://appshunter.io/ios/app/arc-score/id6797694138)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ARC Score Monthly | $1.99 | per month |
| ARC Score Lifetime Access | $17.99 | one-time |


## Frequently asked questions

### Is Jazz Time Trainer free?

Jazz Time Trainer is free to download, with no in-app purchases.

### Is ARC Score free?

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

### Do Jazz Time Trainer or ARC Score have ads?

Neither Jazz Time Trainer nor ARC Score shows ads.

### Which is updated more often, Jazz Time Trainer or ARC Score?

Jazz Time Trainer ships an update every 4 days, and ARC Score every 2 days. Most recently, Jazz Time Trainer was updated on October 25, 2026 and ARC Score 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.*