# JamEngine vs Chord Navigator

The clearest difference is update cadence: JamEngine at every 5 days against Chord Navigator's every 11 days. Chord Navigator's advantage is iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. JamEngine sells 1 one-off in-app purchase and Chord Navigator sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

JamEngine ships an update every 5 days, Chord Navigator every 11 days. The most recent releases landed on September 27, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | JamEngine | Chord Navigator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 11 days |
| Monetization | — | Free with in-app purchases |
| Size | 149 MB | 36 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Orcun Keskin](https://appshunter.io/developer/1681326325) | [DOSEONG KANG](https://appshunter.io/developer/6772862883) |

## 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 |


### Chord Navigator

[App page](https://appshunter.io/ios/app/chord-navigator-progression/id6772862881)

Analyze chord progressions and understand music theory with this app. It provides chord function analysis, guitar diagrams for fingering, and visualization of scales and chord tones on a fretboard. Hear chords directly with MIDI playback.

**Highlights:** Chord progression analysis, Guitar chord diagrams, Scale visualization, Piano chord diagrams, MIDI playback

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 월간 구독 | $0.99 | per month |
| Lifetime Premium | $4.99 | one-time |


## Frequently asked questions

### Is JamEngine free?

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

### Is Chord Navigator free?

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

### Do JamEngine or Chord Navigator have ads?

Neither JamEngine nor Chord Navigator shows ads.

### Which is updated more often, JamEngine or Chord Navigator?

JamEngine ships an update every 5 days, and Chord Navigator every 11 days. Most recently, JamEngine was updated on September 27, 2026 and Chord Navigator on October 1, 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.*