# JamEngine vs iChanges

The clearest difference is price: JamEngine at Free against iChanges's $3.99. JamEngine also leads on update cadence (every 5 days vs every 3 weeks). iChanges's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 18.6). On ads and device support there is nothing between them.

JamEngine is free to download; iChanges costs $3.99 up front. JamEngine sells 1 one-off in-app purchase. iChanges asks for nothing beyond the download.

JamEngine ships an update every 5 days, iChanges every 3 weeks. The most recent releases landed on September 9, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | JamEngine | iChanges |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 149 MB | 6 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Orcun Keskin](https://appshunter.io/developer/1681326325) | [Klaus Storck](https://appshunter.io/developer/6774789416) |

## What reviewers say

### JamEngine

[App page](https://appshunter.io/ios/app/jamengine/id6759828737)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JamEngine Pro | $8.99 | one-time |


### iChanges

[App page](https://appshunter.io/ios/app/ichanges-jazz-chord-trainer/id6774789414)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JamEngine free?

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

### Is iChanges free?

iChanges costs $3.99, with no in-app purchases.

### Do JamEngine or iChanges have ads?

Neither JamEngine nor iChanges shows ads.

### Which is updated more often, JamEngine or iChanges?

JamEngine ships an update every 5 days, and iChanges every 3 weeks. Most recently, JamEngine was updated on September 9, 2026 and iChanges on September 14, 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.*