# Notch vs Jazz Time Trainer

The clearest difference is iOS requirement: Jazz Time Trainer at 13.0 against Notch's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Notch ships an update every 3 days, Jazz Time Trainer every 4 days. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Notch | Jazz Time Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 days |
| Size | 30 MB | 19 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [hayoung jang](https://appshunter.io/developer/1896738705) | [Sangwoo Shin](https://appshunter.io/developer/6778440317) |

## What reviewers say

### Notch

[App page](https://appshunter.io/ios/app/notch/id6770425874)

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

**In-app purchases:** none


### Jazz Time Trainer

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Notch free?

Notch is free to download, with no in-app purchases.

### Is Jazz Time Trainer free?

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

### Do Notch or Jazz Time Trainer have ads?

Neither Notch nor Jazz Time Trainer shows ads.

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

Notch ships an update every 3 days, and Jazz Time Trainer every 4 days. Most recently, Notch was updated on October 11, 2026 and Jazz Time Trainer 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.*