Comparison

iWriteMusic Pro vs MIDI Aid

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

Head to head
About

iWriteMusic Pro

Create professional music notation efficiently with intuitive tools. Capture musical ideas, prepare lesson materials, or compose complex scores. Offers flexible layout, multi-track support, and playback features for practice and sharing.

Highlights
  • Easy to master notation entry
  • OneFlick and Traditional note entry
  • Flexible page-layout tools
  • Multi-track, multi-voice score creation
  • Organized score and part management
  • Playback with mixer and loop options
  • Export to PDF, MIDI, MusicXML, WAV
Features
Read full description

Less learning. More music. Professional notation without the lengthly learning process. Whether you are capturing a musical idea, preparing lesson material or a lead sheet, or completing a large score, iWriteMusic helps you turn inspiration into finished notation efficiently. 7 reasons to choose iWriteMusic. 1. Easy to master. Essential controls are organized clearly, so even if notation apps are new to you, you can get started without relying on a thick manual or a long series of tutorial videos. 2. Enter notes faster, your way. With OneFlick, you can combine choices such as pitch and note value into a single gesture. Traditional Entry lets you choose the notation item and its position separately. Use either method to match the task and the way you prefer to work. 3. Create polished, professional scores. Flexible page-layout tools help you prepare music for practice, lessons, rehearsals, performance, and distribution. Create individual parts from a score and print directly with AirPrint. 4. Use the notation your music requires. Create multi-track, multi-voice scores with lyrics, chord symbols, percussion, drum notation, and multi-bar rests. Add key, time, clef, and tempo changes within a piece, along with grace notes, articulations, dynamics, and full or partial transposition. 5. Keep scores and parts organized. Manage scores and their individual parts together, and use folders to organize a growing collection of compositions and teaching materials. 6. Listen, check, and practice. Play your score while you work. Use the mixer, solo, mute, instrument selection, loop playback, and swing playback to check your music or support daily practice. 7. Export and share for any purpose. Export PDF, image, Standard MIDI, MusicXML, and audio files (WAV). Share editable iWriteMusic files and continue working on another device. For composers, arrangers, songwriters, music teachers, students, singers, and instrumentalists. Use iWriteMusic for musical sketches, lead sheets, chord charts, lesson materials, choral and ensemble scores, chamber music, band music, orchestral scores, and individual parts. iWriteMusic is free to download. Some features require one-time in-app purchases.

About

MIDI Aid

Features
Read full description

MIDI Aid is a MIDI monitor: connect your MIDI devices and see every incoming event in one clean, technical view. Whether you are debugging a synth patch, checking a controller mapping, or just curious what your gear is sending, MIDI Aid shows you what is really happening on the wire. CAPTURE • Live event log with precise timestamps • Start, pause, and resume capturing at any time • Clear the log with one tap • Follow mode keeps the newest events in view • Clear controls in the style of studio gear: a capture key, a status display with the live event count, and a Follow key with a light that shows when it is on UNDERSTAND • Every event decoded into plain language: notes with names and velocities, controllers with their standard names, program changes, aftertouch, pitch wheel, and more • Raw status and data bytes side by side with the decoded event • Hex or decimal display, your choice • Tap any event for a detail view including the full raw bytes FILTER • Focus on what matters: filter by device, event type, and MIDI channel • Channel events, system common events, and system real time events can be toggled individually • Mute noisy events like Timing Clock or Active Sensing with one tap • All 16 MIDI channels as pads: tap one to hide or show it • Each section shows how many of its filters are on DEVICES • Works with USB MIDI devices out of the box • Network MIDI sessions and Bluetooth MIDI devices set up at system level appear automatically SUBSCRIPTION • MIDI Aid Pro: try it free for one week, then 0.99 € per month (or the equivalent in your currency) • Cancel any time in your account settings • Bought MIDI Aid before it became a subscription? It stays unlocked for you: tap Restore purchase • Terms of Use: https://ramuslabs.com/midi-aid/terms/ MIDI Aid supports all 16 MIDI channels, running status, and System Exclusive messages. No account, no ads, no tracking. Your MIDI data never leaves your device. MIDI Aid only counts anonymously which features are used; a random install ID is added only if you allow it.

Screenshots

MIDI Aid3 screens

Verdict

The call

The clearest difference is update cadence: iWriteMusic Pro at every 2 weeks against MIDI Aid's every 6 weeks. MIDI Aid's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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. iWriteMusic Pro sells 5 one-off in-app purchases and MIDI Aid sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

iWriteMusic Pro ships an update every 2 weeks, MIDI Aid every 6 weeks. Both last shipped on November 13, 2026.

Scorecard2 real differences · 8 level
iWriteMusic Pro versus MIDI Aid: the parameters behind the verdict, then further details
ParameteriWriteMusic ProMIDI Aid
PriceFreeFree
Rating4.7 (534 ratings) — better—
Positive reviews74.9% of reviews—
Number of ratings534 — better—
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPadiPhone, iPad, Mac — better
Requires iOS16.016.0
Further details — not scored
Size20 MB41 MB
Age rating4+4+
DeveloperiWriteMusicProjectTobias Wissmueller

Bugs and requests

iWriteMusic Pro

Reported bugs

3 issues
  • Inability to save or export files after iOS 7 update
  • Crashing when editing certain notation elements
  • Playback issues with repeat signs and tempo changes

Requested features

5 requests
  • MusicXML import/export support
  • Ability to change note sizes and fonts
  • More time signature options
  • Improved copy/paste functionality
  • Folder organization for saved files

MIDI Aid

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

iWriteMusic Pro

One-time5
  • Advanced File Management$0.99
  • Audio Export$0.99
  • MIDI Export$0.99
Show 2 more
  • MusicXML Export$0.99
  • Basic Features$12.99
1 purchases

MIDI Aid

Subscriptions1
  • MIDI Aid Pro7 Days trial$0.991 Month

Questions

Is iWriteMusic Pro free?
iWriteMusic Pro is free to download, with in-app purchases available.
Is MIDI Aid free?
MIDI Aid is free to download, with in-app purchases available.
Do iWriteMusic Pro or MIDI Aid have ads?
Neither iWriteMusic Pro nor MIDI Aid shows ads.
Which is updated more often, iWriteMusic Pro or MIDI Aid?
iWriteMusic Pro ships an update every 2 weeks, and MIDI Aid every 6 weeks. Most recently, iWriteMusic Pro was updated on November 13, 2026 and MIDI Aid on November 13, 2026.

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