# ギター 楽譜 JamJam vs Mr. Chord Doodle

The clearest difference is ads: ギター 楽譜 JamJam at none against Mr. Chord Doodle's shown. ギター 楽譜 JamJam also leads on iOS requirement (15.0 vs 17.6). Mr. Chord Doodle's advantage is update cadence (every 4 days vs every 9 days). On price, in-app purchases and device support there is nothing between them.

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

ギター 楽譜 JamJam ships an update every 9 days, Mr. Chord Doodle every 4 days. The most recent releases landed on November 9, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | ギター 楽譜 JamJam | Mr. Chord Doodle |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | — | Ad-supported |
| Size | 66 MB | 47 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [kotani harumi](https://appshunter.io/developer/1751649806) | [KAZUAKI NATSUBAYASHI](https://appshunter.io/developer/6796887250) |

## What reviewers say

### ギター 楽譜 JamJam

[App page](https://appshunter.io/ios/app/jamjam/id6763877947)

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

**In-app purchases:** none


### Mr. Chord Doodle

[App page](https://appshunter.io/ios/app/mr-chord-doodle/id6796887248)

This app helps guitarists draw, save, and display chord diagrams with a freehand feel. It also includes a high-precision tuner and a versatile metronome, eliminating the need to switch between multiple tools for practice.

**Highlights:** Chord and scale diagram drawing, Customizable chord saving, Automatic chord detection, High-performance guitar tuner, Versatile metronome with sound sets, Save favorite tempos and settings

**In-app purchases:** none


## Frequently asked questions

### Is ギター 楽譜 JamJam free?

ギター 楽譜 JamJam is free to download, with no in-app purchases.

### Is Mr. Chord Doodle free?

Mr. Chord Doodle is free to download, with no in-app purchases.

### Do ギター 楽譜 JamJam or Mr. Chord Doodle have ads?

Mr. Chord Doodle shows ads; ギター 楽譜 JamJam does not.

### Which is updated more often, ギター 楽譜 JamJam or Mr. Chord Doodle?

ギター 楽譜 JamJam ships an update every 9 days, and Mr. Chord Doodle every 4 days. Most recently, ギター 楽譜 JamJam was updated on November 9, 2026 and Mr. Chord Doodle on November 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*