MIDI Opener

Name: MIDI Opener
Rating: 3.9 (85 reviews)
Author: MartianRover

By: MartianRover

Precise MIDI Control

Features & Capabilities

MIDI Opener is a modern, high-performance MIDI player designed for musicians, learners, and creators. Load MIDI files and soundbanks from your device or from other apps, watch every note play in real time, and enjoy a focused, ad-free experience.

Key features include visual MIDI playback, tempo and key controls, per-track mute/solo, 128 General MIDI instruments, built-in effects, custom soundbanks, synchronized lyrics, a retro 3D visualizer, and optimized performance with bundled sample songs.

User Growth & Download Statistics

App Music & Audio Education

By:

MartianRover

Rating:

3.90

(85)

Version:

5.4 Last updated: 2026-06-02

Version code:

886402641

Creation date:

2015-09-18

Compatible devices:

Size:

333.37MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-05

Compare stats and ranking:

Ranking

# 169,685 ▼ 122

Other rankings

#52 in transpose keyword 38 ▲ 23

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

MartianRover

Apple Apps Store

https://apps.apple.com/us/app/midi-opener/id1029373282

Website:

http://martianrover.com/midi-opener

User Reviews

Users praise MIDI Opener for high-quality instrument sounds and flexible playback controls, plus a simple, fast UI. They value on-the-fly instrument changes and muting. However, repeated concerns center on stability when switching SoundFonts (exacerbated by iOS 26), the absence of export/playlist options, and requests for per-instrument volume control.

Pros

Great sounding instruments across soundfonts.
On-the-fly instrument changes and muting tracks.
Simple, fast UI with clear file name display.
Tempo and key adjustments plus per-effect toggles for experimentation.
Fair price and easy to learn.

Cons

Crashes and instability when changing SoundFonts, particularly after iOS 26 update.
Lacks export/playlist features (export to WAV/MP3, etc.).
Requests for per-instrument volume control (missing feature).

Recent reviews

I have used this app for years to learn hymns. Since the upgrade it cuts off the file at the beginning and starts it doesn’t start at the beginning.

by ro*****, 2026-05-18

I gave a feedback a couple weeks ago, and wished the app can support adjusting the volumes of individual tracks. You know what? The feature is now added!