MIDI Opener
MartianRover Utilities iPhoneiPadiPod touch
MIDI Opener is a free Utilities app for iPhone and iPad by MartianRover. Rated 3.9/5 from 86 ratings. Requires iOS 17.6. Updated June 22, 2026.
- Rating
- 3.9
- 86 ratings
- Price
- Free
- on the App Store
- Size
- 334 MB
- Age 4+
- Updated
- Jun 22
- 2026 · v5.6
Screenshots
About MIDI Opener
MIDI Opener – Play, Practice & Export MIDI Files Open any MIDI file and take full control of your music. MIDI Opener is a fast, precise MIDI player built for musicians who want to practice smarter, isolate parts, customize arrangements, route playback to external gear, export their changes, and deeply explore songs without the complexity of a DAW. WHY MIDI OPENER • Instantly open and play standard MIDI files (.mid, .midi) • Ultra-responsive playback with zero clutter • Built for practice, learning, live performance, and musical exploration • Completely ad-free POWERFUL PLAYBACK CONTROL • Change tempo in real time (slow down or speed up) • Transpose key instantly to match your instrument • Mute, solo, and adjust volume for each track • Swap instruments using all 128 General MIDI sounds • Import custom SoundFont (.sf2) and DLS soundbanks • Apply reverb, delay, distortion, and EQ effects EXPORT YOUR CHANGES • Export audio as MP3, M4A, or WAV • Export modified MIDI files with your changes • Save customized practice mixes and arrangements • Perfect for backing tracks, sharing, and rehearsal prep PRACTICE WITH PRECISION • Loop any section with A–B looping • Isolate difficult passages and repeat them • Break down complex songs into manageable parts • Save and instantly restore full practice setups with Snapshots Perfect for pianists, guitarists, producers, singers, music directors, and students. MIDI OUT & EXTERNAL DEVICES • Send MIDI playback to external keyboards, synths, drum machines, and sound modules • Connect over USB, Bluetooth, or Wi-Fi • Compatible with Logic Pro, Ableton Live, GarageBand, and CoreMIDI apps • Use premium external instrument sounds and studio hardware SING AND PRACTICE • View embedded lyrics when available • Real-time word highlighting synced to playback • Great for karaoke and vocal practice SEE YOUR MUSIC • Clean, readable note timeline • Beautiful full screen Focus Mode with ambient visuals, auto hiding controls, and optional synchronized lyrics • Track based visual layout • Retro 3D visualizer • Multiple visual themes ORGANIZE YOUR MIDI LIBRARY • Import from Files, AirDrop, Mail, and other apps • Create playlists • Queue songs for continuous playback UPGRADE OPTIONS Free — The Player & Customizer Open and play MIDI files with powerful built-in customization tools. Includes instrument swapping with all 128 General MIDI sounds, custom SoundFont and DLS support, synchronized lyrics, audio effects, song section looping, visual themes, saved mixes with Snapshots, playlists, queue support, and a complete MIDI song library experience—all in a fast, focused, ad-free player. Practice Pack — The Musician’s Upgrade Unlock advanced practice and arrangement tools including real-time tempo control, key transposition, per-track mute, solo, and volume controls, plus MP3 audio and MIDI export for creating custom practice mixes, backing tracks, and arrangements. MIDI Out — The Producer’s Upgrade Route MIDI playback to external keyboards, synths, drum machines, DAWs, and professional music hardware over USB, Bluetooth, or Wi-Fi using CoreMIDI. All Access — Everything, Once Get the complete MIDI Opener experience with every upgrade included, plus discounted upgrade pricing if you already own another product. FAST. FOCUSED. NO DISTRACTIONS. Made for musicians who want control—not complexity.
Ratings & reviews
3.9
86 ratings
What’s new
Version 5.6 · Updated 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
App privacy
The developer, MartianRover, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
- Diagnostics: Performance Data, Crash Data
Used for: Analytics, App Functionality
Alternatives to MIDI Opener
Looking for apps like MIDI Opener? Here are 6 similar apps on the App Store. The highest rated is Unmix AI Voice Drums Extractor (4.5/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| MIDI Opener | 3.9 / 5 (86 ratings) | Free | June 22, 2026 | |
| WIDI App | 3.1 / 5 (32) | Free | Aug 22, 2025 | Compare |
| Morningstar MIDI Editor | 3.7 / 5 (18) | Free | Apr 16, 2025 | Compare |
| Midi Suite | 3.1 / 5 (7) | Free | Sep 23, 2026 | Compare |
| Unmix AI Voice Drums Extractor | 4.5 / 5 (189) | Free | Oct 14, 2025 | Compare |
| SignalScope X | 3.0 / 5 (23) | Free | Oct 16, 2026 | Compare |
| Disklavier Controller - US | 2.6 / 5 (29) | Free | Jun 3, 2024 | Compare |
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