Comparison

MIDI Opener vs Modules

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

Modules

Create dynamic visual effects synchronized with your music library or microphone input. Select songs from your device to bring your audio to life with unique visual experiences.

Highlights
  • Music visualizer
  • Microphone input
  • Local music library integration
  • Customizable visual effects
Features
Read full description

This app generates some visual effects from your music library or microphone. - Usage 1. Tap the music button. 2. Select your songs from music library. These songs should be on your device.

Screenshots

MIDI Opener4 screens
Modules4 screens

Verdict

The call

The clearest difference is update cadence: MIDI Opener at every 6 days against Modules's monthly. MIDI Opener also leads on review sentiment (64% vs 45%) and ratings volume (86 vs 18). Modules's advantage is iOS requirement (9.0 vs 17.6). On price, rating, ads and in-app purchases 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 and Modules sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

MIDI Opener holds the better App Store score, 3.9 against 3.7. Both are backed by a comparable volume of ratings — 86 and 18 respectively. Written reviews point the same way: 64% of MIDI Opener's written reviews are positive against 45% of Modules's.

UpkeepUpdate frequency

MIDI Opener ships an update every 6 days, Modules monthly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
MIDI Opener versus Modules: the parameters behind the verdict, then further details
ParameterMIDI OpenerModules
PriceFreeFree
Rating3.9 (86 ratings) — better3.7 (18 ratings)
Positive reviews64.5% of reviews — better45.5% of reviews
Number of ratings86 — better18
Update frequencyEvery 6 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.69.0 — better
Further details — not scored
Size334 MB76 MB
Age rating4+4+
DeveloperMartianRoverY. MOCHIDUKI

Customer experience

MIDI Opener

All ratings86 ratings
Positive72.1%
Neutral8.1%
Negative19.8%
Written reviews76 reviews
Positive64.5%
Neutral11.8%
Negative23.7%

Modules

All ratings17 ratings
Positive64.7%
Neutral17.6%
Negative17.6%
Written reviews11 reviews
Positive45.5%
Neutral18.2%
Negative36.4%

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)

Modules

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
1 purchases

Modules

One-time1
  • Remove ads$1.99

Questions

Is MIDI Opener free?
MIDI Opener is free to download, with in-app purchases available.
Is Modules free?
Modules is free to download, with in-app purchases available.
Which has better reviews, MIDI Opener or Modules?
MIDI Opener is rated higher. MIDI Opener averages 3.9 out of 5 from 86 ratings, while Modules averages 3.7 from 18 ratings.
Do MIDI Opener or Modules have ads?
Neither MIDI Opener nor Modules shows ads.
Which is updated more often, MIDI Opener or Modules?
MIDI Opener ships an update every 6 days, and Modules monthly. Most recently, MIDI Opener was updated on October 22, 2026 and Modules on October 24, 2026.

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