Comparison

MIDI Opener vs Program Changer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MIDI Opener

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
Read full description

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.

About

Program Changer

This utility app allows users to send and receive MIDI Program Changes. It features a large keypad for quick patch switching and a display mode for incoming commands. It connects to all available MIDI devices and network sessions.

Highlights
  • Send MIDI Program Changes
  • Receive MIDI Program Changes
  • Large keypad for quick entry
  • Jump up/down with +/- keys
  • Display incoming Program Change numbers
  • Connects to all MIDI devices/networks
Features
Read full description

Program Changer is a super simple tool to send and receive MIDI Program Changes. The big keypad allows for quick entry to switch your synthesizer patches, audio mixer presets, lighting desk scenes, or whatever you can link to a MIDI Program Change command. Use the plus and minus keys to quickly jump up and down. Alternatively, Program Changer can just give you a big display of incoming Program Change numbers in 'receive' mode. Program Changer sends and listens to all MIDI devices or network sessions available. I'm seriously considering Audiobus support for inter-app MIDI commands. Let me know if you need this, then I might hurry up. If you have any questions or feedback, don't hesitate to contact me directly via contact@oscarbouwmans.nl.

Screenshots

MIDI Opener4 screens
Program Changer3 screens

Verdict

The call

The clearest difference is rating: Program Changer at 4.7 against MIDI Opener's 3.9. Program Changer also leads on in-app purchases (none vs 13) and ads (none vs shown). MIDI Opener's advantage is ratings volume (85 vs 3). On price, review sentiment and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MIDI Opener sells 13 one-off in-app purchases. Program Changer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Program Changer holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: MIDI Opener has 85 ratings behind it against 3, 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 67% of Program Changer's.

Scorecard6 real differences · 4 level
MIDI Opener versus Program Changer: the parameters behind the verdict, then further details
ParameterMIDI OpenerProgram Changer
PriceFreeFree
Rating3.9 (85 ratings)4.7 (3 ratings) — better
Positive reviews64.5% of reviews66.7% of reviews — better
Number of ratings85 — better3
Update frequencyEvery 10 days—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.69.0 — better
Further details — not scored
Size334 MB23 MB
Age rating4+4+
DeveloperMartianRover, LLCOscar Bouwmans

Customer experience

MIDI Opener

All ratings81 ratings
Positive72.8%
Neutral8.6%
Negative18.5%
Written reviews76 reviews
Positive64.5%
Neutral11.8%
Negative23.7%

Program Changer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

Bugs and requests

MIDI Opener

Reported bugs

15 issues
  • 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.
Show 10 more
  • 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.

Requested features

18 requests
  • Adjust individual track volumes
  • Zoom in/out
  • Select region to play
  • Export features (WAV, MP3, FLAC)
  • Playlist functionality
Show 13 more
  • 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)

Program Changer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

MIDI Opener

One-time13
  • Tip$0.99
  • Full Upgrade Discount$0.99
  • Remove Ads$1.99
Show 10 more
  • Change Tempo$1.99
  • Change Tempo and Key$1.99
  • All Access Upgrade$2.99
  • Track Controls$2.99
  • Super Tip$4.99
  • MIDI Out$4.99
  • Practice Pack$4.99
  • Full Upgrade$4.99
  • Premium Upgrade$4.99
  • All Access$7.99
None

Program Changer

No in-app purchases

Questions

Is MIDI Opener free?
MIDI Opener is free to download, with in-app purchases available.
Is Program Changer free?
Program Changer is free to download, with no in-app purchases.
Which has better reviews, MIDI Opener or Program Changer?
Program Changer is rated higher. MIDI Opener averages 3.9 out of 5 from 85 ratings, while Program Changer averages 4.7 from 3 ratings.
Do MIDI Opener or Program Changer have ads?
MIDI Opener shows ads; Program Changer does not.

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