iWriteMusic vs MIDI Aid
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iWriteMusic
Create professional music notation efficiently with intuitive tools. Quickly enter notes, arrange pages, and export your compositions in various formats. Ideal for composers, teachers, and musicians of all levels.
- Easy to master notation interface
- Fast note entry with OneFlick or traditional methods
- Flexible page layout tools
- Support for multi-track, multi-voice scores
- Integrated playback and mixer
- Export to PDF, MIDI, MusicXML, and audio
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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.
MIDI Aid
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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
Verdict
The clearest difference is update cadence: iWriteMusic 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
Both are free to download. iWriteMusic 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.
iWriteMusic ships an update every 2 weeks, MIDI Aid every 6 weeks. Both last shipped on November 13, 2026.
| Parameter | iWriteMusic | MIDI Aid |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (181 ratings) — better | — |
| Positive reviews | 73.5% of reviews | — |
| Number of ratings | 181 — better | — |
| Update frequency | Every 2 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 19 MB | 41 MB |
| Age rating | +4 | 4+ |
| Developer | iWriteMusicProject | Tobias Wissmueller |
In-app purchases
iWriteMusic
- Advanced File Management$0.99
- Audio Export$0.99
- MIDI Export$0.99
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- MusicXML Export$0.99
- Basic Features$9.99
MIDI Aid
- MIDI Aid Pro7 Days trial$0.991 Month








