# Extrack vs Retro MIDI Player Mobile

The clearest difference is price: Extrack at Free against Retro MIDI Player Mobile's $2.99. Retro MIDI Player Mobile's advantage is in-app purchases (none vs 2) and update cadence (every 4 days vs every 6 weeks). On ads, device support and iOS requirement there is nothing between them.

Extrack is free to download; Retro MIDI Player Mobile costs $2.99 up front. Extrack sells 2 in-app purchases, starting at $5.99 per month. Retro MIDI Player Mobile asks for nothing beyond the download.

Extrack ships an update every 6 weeks, Retro MIDI Player Mobile every 4 days. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Extrack | Retro MIDI Player Mobile |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.0 (31 ratings)](https://appshunter.io/ios/app/extrack-stem-separatorchord/id6504546276/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 35.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 603 MB | 40 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yamaha Corporation](https://appshunter.io/developer/353469356) | [Hideo Suzuki](https://appshunter.io/developer/6800318757) |

## What reviewers say

### Extrack

[App page](https://appshunter.io/ios/app/extrack-stem-separatorchord/id6504546276)

This app allows you to split songs into individual instrument parts and see chords in real-time. Practice along with your favorite music by adjusting volumes, changing tempo, or muting specific instruments. It's designed for musicians of all levels to enhance their practice sessions.

**Highlights:** Instrument stem separation, Real-time chord analysis, Adjustable instrument volumes, Practice 'minus one' style, Tempo and key changes, Section looping, Visual chord guides

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $5.99 | per month |
| Yearly Plan | $39.99 | per year |


### Retro MIDI Player Mobile

[App page](https://appshunter.io/ios/app/retro-midi-player-mobile/id6802171148)

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Extrack free?

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

### Is Retro MIDI Player Mobile free?

Retro MIDI Player Mobile costs $2.99, with no in-app purchases.

### Do Extrack or Retro MIDI Player Mobile have ads?

Neither Extrack nor Retro MIDI Player Mobile shows ads.

### Which is updated more often, Extrack or Retro MIDI Player Mobile?

Extrack ships an update every 6 weeks, and Retro MIDI Player Mobile every 4 days. Most recently, Extrack was updated on November 8, 2026 and Retro MIDI Player Mobile on November 10, 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.*