# MIDI Opener — The essential MIDI player > Modern MIDI player for musicians with visual playback and advanced controls. (iPhone/iPad app by MartianRover, LLC.) - Source: https://appshunter.io/ios/app/midi-opener/id1029373282 (this page in markdown: same URL + `.md`) - Developer: [MartianRover, LLC](https://appshunter.io/developer/1282183383) - Category: Utilities, Music - Price: Free with in-app purchases - Rating: 3.93/5 from 85 App Store ratings · 76 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 334 MB - Languages: Danish, Dutch, English, Finnish, French, German, Italian, Japanese, Korean, Portuguese and 4 more - Released: 2015-09-18 - Data updated: 2026-08-12 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/midi-opener/id1029373282/reviews.md ## What is 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. ## Key features - Visual MIDI playback - Tempo and key control - Advanced track controls - 128 General MIDI instruments - Built-in effects - Custom soundbanks - Synchronized lyrics - 3D visualizer ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Remove Ads | $1.99 | one-time | | Tip | $0.99 | one-time | | Super Tip | $4.99 | one-time | | MIDI Out | $4.99 | one-time | | Practice Pack | $4.99 | one-time | | All Access | $7.99 | one-time | | All Access Upgrade | $2.99 | one-time | | Change Tempo | $1.99 | one-time | | Full Upgrade | $4.99 | one-time | | Change Tempo and Key | $1.99 | one-time | | Premium Upgrade | $4.99 | one-time | | Full Upgrade Discount | $0.99 | one-time | | Track Controls | $2.99 | one-time | ## What do users think of MIDI Opener? Overall sentiment: mixed **Pros** - 👍 Simple and easy to use - 🎶 Good sounding instruments - 🚀 Handles instrument changes well - ✨ Free to use - ✅ Plays MIDI files effectively - 💡 Developer responsiveness (feature added) - 👌 Great UI and features - 🌟 Best MIDI player on iOS - 🎵 Decent sound quality - 📂 Integrates with Google Drive/Files app **Cons** - 🐛 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 - 🚫 No external MIDI interface settings - 🔇 Bass drum too quiet for metal - 🎛️ Key change feature breaks songs - ❓ Unable to export edited files - 😵‍💫 App crashes on startup - 🎶 Randomly plays single track only - 🐌 Slow loading from cloud storage - ❌ Files not playing/no sound - 🔄 Automatically loops files - 🔌 No external MIDI interface settings **Commonly 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. - Changing key option breaks songs. - App crashes on startup. - Randomly playing a single track only. - Skipping individual notes when too many are playing. - New update not working, won't play audio or understand certain instruments. - Google Drive method does not work. - Download button does nothing. - Skips a lot of notes. - No sound, plays silence. - Scrolling bar with no sound. **Most requested features** - Adjust individual track volumes - Zoom in/out - Select region to play - Export features (WAV, MP3, FLAC) - Playlist functionality - Library structure with nested folders - AUV3 plug-in support - IAA with audio hosts - Switchable color schemes - Spectrum editor/video export - Save MIDI soundfiles as MP3 - More SoundBanks - Tempo control - Transpose option - Custom SoundFont support - Local storage/in-app folder - Background play - Option to play once (no loop) ## Recent user reviews (10 of 76) All indexed reviews: https://appshunter.io/ios/app/midi-opener/id1029373282/reviews.md ### 1/5 — What happened? *2026-07-08, version 5.6* 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. ### 1/5 — Cuts off the beginning of the song *2026-05-18, version 5.1* 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. ### 5/5 — So nice an app, so responsive the developer! *2026-05-15, version 5.0* 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! ### 1/5 — Defeating the purpose of sequenced music *2026-05-07, version 4.3* Charging people to mute separate tracks defeats the purpose of sequenced music ### 4/5 — Could be a 5 star if… *2026-04-25* 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. ### 2/5 — Needs to be fixed *2025-12-30, version 4.2.3* Whenever I click on another SoundFont, it just kicks me out of the app. ### 5/5 — Best easy midi player *2025-12-29, version 4.2.3* Definitely the beat i have used to just play quality midi files. Good sounding instruments. Set reverb to medium gall ir large gall and keep setting in the middle. Free trual, easy to learn how to use. ### 5/5 — 4.5 / 5 *2025-12-22, version 4.2.3* Great app, handles instrument changes on the fly better than most desktop apps. Would be perfect if it had export features and a playlist. ### 4/5 — Best MIDI file player on iOS, but… *2025-12-11, version 4.2.3* This app is without a doubt the best way to open and listen to midi files on an Apple device that isn’t a Mac. It is sometimes unstable, especially when changing sound banks (.sf2 soundfont files), but it is by far the best option to use midi on iOS. With the most recent iOS update, however (iOS 26.1 [23B85], December 2025), changing soundfonts appears to crash the app no matter what; that’s why I can’t give this more than a 4 out of 5 rating. ### 3/5 — iOS 26 Bug *2025-09-27, version 4.2.3* Great app, but there is a bug with iOS 26 where whenever I change SoundFonts, it crashes. PLEASE fix this! ## Frequently asked questions about MIDI Opener ### 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. ## Version history (last 5 releases) ### 5.6 — 2026-06-22 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 ### 5.5 — 2026-06-05 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 ### 5.4 — 2026-06-02 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 ### 5.3.2 — 2026-05-30 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 ### 5.2 — 2026-05-21 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 ## Apps similar to MIDI Opener | App | Rating | Price | Category | | --- | --- | --- | --- | | [WIDI App](https://appshunter.io/ios/app/widi-app/id1530167387) | 3.1 (29) | Free | Utilities | | [Morningstar MIDI Editor](https://appshunter.io/ios/app/morningstar-midi-editor/id1603436078) | 3.8 (16) | Free | Utilities | | [iDOS 3](https://appshunter.io/ios/app/idos-3/id1580768213) | 4.3 (52) | $4.99 | Utilities | | [Disklavier Controller - US](https://appshunter.io/ios/app/disklavier-controller-us/id467490291) | 2.7 (26) | Free | Utilities | | [WAV Converter, WAV to MP3](https://appshunter.io/ios/app/wav-converter-wav-to-mp3/id1567028234) | 3.3 (26) | Free | Utilities | | [Spectrolite](https://appshunter.io/ios/app/spectrolite/id1480240180) | 4.8 (51) | Free | Utilities | ## More apps by MartianRover, LLC - [Choreoloop](https://appshunter.io/ios/app/choreoloop/id1487830526) All apps by MartianRover, LLC: https://appshunter.io/developer/1282183383 ## Related topics [midi player](https://appshunter.io/ios/topics/midi-player) · [midi controller pro wifi, usb](https://appshunter.io/ios/topics/midi-controller-pro-wifi-usb) · [midi file player](https://appshunter.io/ios/topics/midi-file-player) · [free midi player](https://appshunter.io/ios/topics/free-midi-player) · [midi converter](https://appshunter.io/ios/topics/midi-converter) · [musk midi player](https://appshunter.io/ios/topics/musk-midi-player) · [bluetooth midi motion](https://appshunter.io/ios/topics/bluetooth-midi-motion) · [ns midi player](https://appshunter.io/ios/topics/ns-midi-player) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-12.*