# E vs Transpose Piano

The clearest difference is update cadence: Transpose Piano at every 3 weeks against E's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. E sells 1 one-off in-app purchase and Transpose Piano sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

E ships an update every 3 months, Transpose Piano every 3 weeks. The most recent releases landed on June 2, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | E | Transpose Piano |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 203 MB | 1 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David Palmerio](https://appshunter.io/developer/348861875) | [晨 黄](https://appshunter.io/developer/6778631856) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-jazz-learn-jazz-guitar/id376532788)

Learn jazz guitar with practical, step-by-step lessons covering chords, progressions, and substitutions. This course is designed for intermediate players looking to understand jazz concepts without overwhelming theory.

**Highlights:** Step-by-step jazz guitar lessons, Covers chords and progressions, Includes theory, tips, tabs, and video, Explains chord embellishments and substitutions, Learn to create own jazz chord progressions, Lessons inspired by jazz standards

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $3.99 | one-time |


### Transpose Piano

[App page](https://appshunter.io/ios/app/transpose-piano/id6779110773)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Transpose Piano Monthly | $4.99 | per month |


## Frequently asked questions

### Is E free?

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

### Is Transpose Piano free?

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

### Do E or Transpose Piano have ads?

Neither E nor Transpose Piano shows ads.

### Which is updated more often, E or Transpose Piano?

E ships an update every 3 months, and Transpose Piano every 3 weeks. Most recently, E was updated on June 2, 2026 and Transpose Piano on September 22, 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.*