# Transposer Pro vs Quartet 3

The clearest difference is price: Transposer Pro at $0.99 against Quartet 3's $16.99. Transposer Pro also leads on in-app purchases (none vs 5). Quartet 3's advantage is update cadence (monthly vs every 11 months). On ads, device support and iOS requirement there is nothing between them.

Transposer Pro costs $0.99 and Quartet 3 $16.99 up front. Quartet 3 sells 5 one-off in-app purchases. Transposer Pro asks for nothing beyond the download.

Transposer Pro ships an update every 11 months, Quartet 3 monthly. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Transposer Pro | Quartet 3 |
| --- | --- | --- |
| Price | **$0.99** | $16.99 |
| Rating | — | **[4.7 (24 ratings)](https://appshunter.io/ios/app/quartet-3/id6740534501/reviews)** |
| Number of ratings | — | **24** |
| Positive reviews | — | 90.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 528 MB |
| Requires iOS | **16.3** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matt Welch](https://appshunter.io/developer/1693016625) | [UK Music Apps Ltd](https://appshunter.io/developer/579320222) |

## What reviewers say

### Transposer Pro

[App page](https://appshunter.io/ios/app/transposer-pro/id6479720686)

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

**In-app purchases:** none


### Quartet 3

[App page](https://appshunter.io/ios/app/quartet-3/id6740534501)

Enhance your jazz performance and practice with live studio recordings of jazz standards. Mute your instrument to play along, change keys, adjust tempo, and loop sections for focused learning. Features animated chord diagrams and playlist creation for seamless practice sessions.

**Highlights:** Live jazz standards play-along, Mute your instrument, Change key and tempo, Loop sections for practice, Animated chord diagrams, Multi-app playlist creation, Multitrack export

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade song | $0.99 | one-time |
| Buy 10 tokens | $8.99 | one-time |
| Buy 20 tokens | $14.99 | one-time |
| Buy 50 tokens | $22.99 | one-time |
| Upgrade all songs | $39.99 | one-time |

**What reviewers like**

- 👍 Superb tool for drum teachers
- 👍 Huge selection of styles and tempos
- 👍 Ability to mute drums for playing along
- 👍 High-quality audio recordings
- 👍 Intuitive and easy to use interface


## Frequently asked questions

### Is Transposer Pro free?

Transposer Pro costs $0.99, with no in-app purchases.

### Is Quartet 3 free?

Quartet 3 costs $16.99, and also offers in-app purchases.

### Do Transposer Pro or Quartet 3 have ads?

Neither Transposer Pro nor Quartet 3 shows ads.

### Which is updated more often, Transposer Pro or Quartet 3?

Transposer Pro ships an update every 11 months, and Quartet 3 monthly. Most recently, Transposer Pro was updated on November 7, 2026 and Quartet 3 on November 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.*