# Jazz Time Trainer vs Mr. Drum

The clearest difference is in-app purchases: Jazz Time Trainer at none against Mr. Drum's 1. Jazz Time Trainer also leads on ads (none vs shown). Mr. Drum's advantage is update cadence (every 2 days vs every 4 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Mr. Drum sells 1 one-off in-app purchase. Jazz Time Trainer asks for nothing beyond the download.

Jazz Time Trainer ships an update every 4 days, Mr. Drum every 2 days. Both last shipped on October 8, 2026.

## The numbers

| Metric | Jazz Time Trainer | Mr. Drum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 19 MB | 47 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Sangwoo Shin](https://appshunter.io/developer/6778440317) | [TAEHEE JANG](https://appshunter.io/developer/6803928636) |

## 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


### Mr. Drum

[App page](https://appshunter.io/ios/app/mr-drum/id6803928634)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade | $5.99 | one-time |


## Frequently asked questions

### Is Jazz Time Trainer free?

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

### Is Mr. Drum free?

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

### Do Jazz Time Trainer or Mr. Drum have ads?

Mr. Drum shows ads; Jazz Time Trainer does not.

### Which is updated more often, Jazz Time Trainer or Mr. Drum?

Jazz Time Trainer ships an update every 4 days, and Mr. Drum every 2 days. Most recently, Jazz Time Trainer was updated on October 8, 2026 and Mr. Drum on October 8, 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.*