# MIDI Opener vs Chord Transpose

The clearest difference is rating: MIDI Opener at 3.9 against Chord Transpose's 3.2. MIDI Opener also leads on review sentiment (64% vs 43%) and ratings volume (86 vs 5). Chord Transpose's advantage is iOS requirement (12.1 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. MIDI Opener sells 13 one-off in-app purchases and Chord Transpose sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

MIDI Opener holds the better App Store score, 3.9 against 3.2. That said, the two scores are not equally well evidenced: MIDI Opener has 86 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 64% of MIDI Opener's written reviews are positive against 43% of Chord Transpose's.

Both ship on a similar rhythm, roughly every 6 days. The most recent releases landed on October 22, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | MIDI Opener | Chord Transpose |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (86 ratings)](https://appshunter.io/ios/app/midi-opener/id1029373282/reviews)** | [3.2 (5 ratings)](https://appshunter.io/ios/app/chord-transpose/id1471762452/reviews) |
| Number of ratings | **86** | 5 |
| Positive reviews | **64.5% of reviews** | 42.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | Every 6 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 334 MB | 20 MB |
| Requires iOS | 17.6 | **12.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MartianRover](https://appshunter.io/developer/1282183383) | [SMICO Consulting (Pty) Ltd.](https://appshunter.io/developer/1449822797) |

## What reviewers say

### MIDI Opener

[App page](https://appshunter.io/ios/app/midi-opener/id1029373282)

This app is a powerful and modern MIDI player designed for musicians, learners, and creators. It offers visual playback, tempo and key control, and advanced track management. Import custom soundbanks and enjoy features like synchronized lyrics and a 3D visualizer.

**Highlights:** Visual MIDI playback, Tempo and key control, Advanced track controls, 128 General MIDI instruments, Built-in effects, Custom soundbanks, Synchronized lyrics, 3D visualizer

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip | $0.99 | one-time |
| Full Upgrade Discount | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Change Tempo | $1.99 | one-time |
| Change Tempo and Key | $1.99 | one-time |
| All Access Upgrade | $2.99 | one-time |
| Track Controls | $2.99 | one-time |
| Super Tip | $4.99 | one-time |
| MIDI Out | $4.99 | one-time |
| Practice Pack | $4.99 | one-time |
| Full Upgrade | $4.99 | one-time |
| Premium Upgrade | $4.99 | one-time |
| All Access | $7.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🎶 Good sounding instruments
- 🚀 Handles instrument changes well
- ✨ Free to use
- ✅ Plays MIDI files effectively

**What reviewers complain about**

- 🐛 Crashes when changing SoundFonts (iOS 26)
- 🐛 Cuts off beginning of songs
- 🐛 Sustained notes treated as staccato
- 💸 Charging for basic features
- 📉 Poor sound quality for some instruments

**Reported bugs**

- Sustained notes are treated as staccato notes.
- Cuts off the beginning of the song.
- Kicked out of the app when clicking on another SoundFont.
- Crashes when changing SoundFonts (iOS 26).
- Bass drum is too quiet for metal music.

**Requested features**

- Adjust individual track volumes
- Zoom in/out
- Select region to play
- Export features (WAV, MP3, FLAC)
- Playlist functionality


### Chord Transpose

[App page](https://appshunter.io/ios/app/chord-transpose/id1471762452)

Easily transpose songs to a more comfortable key, displaying both scale and numeric values. Features capo placement suggestions to simplify playing difficult chords. Optimized for iPhone 6 and higher.

**Highlights:** Transpose songs to different keys, Display scale and numeric values, Capo placement suggestions, Simplify difficult chords, Optimized for newer iPhones

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all Ads | $2.99 | one-time |


## Frequently asked questions

### Is MIDI Opener free?

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

### Is Chord Transpose free?

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

### Which has better reviews, MIDI Opener or Chord Transpose?

MIDI Opener is rated higher. MIDI Opener averages 3.9 out of 5 from 86 ratings, while Chord Transpose averages 3.2 from 5 ratings.

### Do MIDI Opener or Chord Transpose have ads?

Neither MIDI Opener nor Chord Transpose shows ads.

### Which is updated more often, MIDI Opener or Chord Transpose?

MIDI Opener ships an update every 6 days, and Chord Transpose every 6 days. Most recently, MIDI Opener was updated on October 22, 2026 and Chord Transpose on October 19, 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.*