MIDI Opener

MIDI Opener

The essential MIDI player

85 ratings
76 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • September 18, 2015
  • June 22, 2026

Features

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About

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.

Visual MIDI playback
Tempo and key control
Advanced track controls
128 General MIDI instruments
Built-in effects
Custom soundbanks
Synchronized lyrics
3D visualizer
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What's New in MIDI Opener

5.6

June 22, 2026

Version 5.6: Stability and refinement This version fixes a library crash for some users, and improves song loading when linked files need to be downloaded from the cloud. It's also easier to know about reset mute/solo on all tracks at once. Version 5.5: Focus mode, song-specific effects, better lyrics support Focus on the music, customize your sound, and make every song your own. * New Focus Mode for a beautiful, distraction free playback experience * Song specific effects let each song remember its own reverb, chorus, EQ, and other effect settings * Songs with lyrics have a visible icon in the media library * Media library opens partially and dismisses after song selection for better flow Version 5.4: Fixes * Some files showed all tracks combined into a single percussion track Version 5.3.2: Fixes * Purchased product issues * Better loop controls Version 5.3.1: Fixes * Playback sync Version 5.3: MIDI Out MIDI Opener now lets you route playback to external MIDI hardware, synths, DAWs, and music apps. This release also simplifies upgrades with a new product structure built around Practice Pack, MIDI Out, and All Access. * NEW: MIDI Out — send MIDI playback to external keyboards, synths, sound modules, DAWs, and CoreMIDI apps * USB, Bluetooth & Wi-Fi MIDI support — connect to compatible external devices and software * New upgrade structure — streamlined offerings with Practice Pack, MIDI Out, and All Access * Smarter upgrade paths — discounted All Access upgrades for existing owners * Improved purchase flow, entitlement handling, and upgrade experience * Fixed: First note was sometimes silent * Fixed: Missing language translations Version 5.2: Bug fixes and performance enhancements * Songs instantly repeat in single repeat mode * Playhead scrubbing improvement * Fixed startup crash on older iOS versions Version 5.1: Export audio or MIDI files * Save exactly what you hear as an MP3, M4A or WAV file. * Export your changes as a new MIDI file. * Improved UI for smaller screens. Version 5.0: Powerful new controls, smarter practice tools, and a faster, more responsive experience: * Per-track volume control for precise mixing * Create and loop custom sections with ease * Media library with playlists and song queue * Save and instantly restore full mix states with Snapshots * Multiple visual themes for clear, customizable note views * Improved playback performance and responsiveness

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In-App Purchases

$1.99

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User reviews

What happened?

This app was my goto midi app until this recent update. Sustained notes are being treated as staccato notes. It sounds bad and I will look for a new midi player in the meantime.

Cuts off the beginning of the song

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.

So nice an app, so responsive the developer!

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!

Defeating the purpose of sequenced music

Charging people to mute separate tracks defeats the purpose of sequenced music

Could be a 5 star if…

The biggest missing feature for me is adjusting the volumes of individual tracks, otherwise it can be a 5-star app. Other nice-to-have features could be zoom in/out and selecting a region to play.

Developer apps

FAQ

What does MIDI Opener do?

MIDI Opener is a powerful and modern MIDI player that allows users to load and play MIDI files from their device or other apps. It provides visual playback, tempo and key adjustments, and advanced track controls for a deep musical experience.

What are the key features of MIDI Opener?

Key features include visual MIDI playback, precise tempo and key control, the ability to mute or solo individual tracks, 128 General MIDI instruments, built-in effects like reverb and delay, custom soundbank import, synchronized lyrics, and a 3D visualizer.

Is MIDI Opener free to use?

The app is free to download and use, offering core MIDI playback functionality. However, advanced features such as tempo and key control, and advanced track controls, are available through an in-app purchase upgrade.

What devices is MIDI Opener compatible with?

Based on the description, MIDI Opener is designed for iOS devices. It allows loading files from the device and directly from other apps, suggesting good integration within the iOS ecosystem.

How can musicians benefit from using MIDI Opener?

Musicians can use MIDI Opener to study MIDI arrangements by seeing every note, practice along by adjusting tempo and key, isolate specific instrument parts using track controls, and experiment with different sounds using the built-in instruments and custom soundbanks.