MIDIWriter Downloads & RevenueMIDIWriter · App Store
Not in any tracked top chart right now.
Updated 3 Nov 2026 · rankings refresh through the day
DeveloperMasayuki Akamatsu
CategoryMusic
Price8.00 CNY
Released
Rating★ 0.0 (0)
Version2.0.1
Age rating4+
First seen by us
20 Oct 2026
20 Oct 2026Installs (est.)500+ worldwide
📈Entered the top 100📈Charting in a new country🆕First spotted by AppInsider📦Version 2.0.1🆕Released on the App Store
Full timeline · 5 events
- 📈MIDIWriter entered the top 100Top Paid · Music · CN
- 📈MIDIWriter charting in a new countryChina
- 🆕MIDIWriter first spotted by AppInsider#18 in Top Paid · Music · Japan
- 📦MIDIWriter version 2.0.1Minor bugs have been fixed.
- 🆕MIDIWriter released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
MIDIWriter on the App Store
App details
App ID
520751563
Publisher
正行 Akamatsu
On the store since
Apr 2012
14 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN JA
Size
32 MB
Also listed in
Entertainment
MIDIWriter downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About MIDIWriter
[[ A STRANGE MUSIC TOOL FOR MANIAC MUSIC LOVERS! ]]
MIDIWriter is a unique app that converts keyboard input into MIDI note messages. Each character you type instantly produces sound. You can also enter a phrase and play it back as a sequence with adjustable tempo and loop options.
KEY FEATURES:
Built-in Sound Engine:
No external app required! MIDIWriter includes a built-in General MIDI sound engine with 128 instruments and 9 drum kits. Just type and hear the sound immediately.
Phrase Playback:
Enter any text and play it as a musical sequence. Adjust the tempo (1-480 BPM), enable loop mode, and let your words become music. Space characters can be used as rests.
Drum Mode:
Switch to drum mode to play percussion sounds. Choose from 9 GM drum kits including Standard, Room, Power, Electronic, 808/909, Jazz, Brush, and Orchestral.
MIDI Output:
Send MIDI to other apps or external devices. Configure MIDI channel (1-16), program change (0-127), and destination. Works with Virtual MIDI and MIDI Network Session. Can be used simultaneously with the built-in sound engine.
Keyboard Support:
Use the on-screen software keyboard, or connect a Bluetooth/USB hardware keyboard for a real typing experience. Supports Japanese input with proper IME handling.
MIDI Network Session:
Connect to Mac or other iOS devices over Wi-Fi to control CoreMIDI-compatible sound generators remotely.
Dark Mode & Rotation:
Full support for light and dark modes. Works in portrait and landscape orientations on both iPhone and iPad.
Note: Playback stops when the app goes to background.
Using the Built-in Sound:
Simply launch MIDIWriter and start typing. Each key produces a unique sound based on its character code. Enable drum mode in Settings for percussion sounds.
Using with External MIDI Apps (Virtual MIDI):
1. Open a CoreMIDI sound generator app.
2. In MIDIWriter Settings, turn on "MIDI Output" and select the destination.
3. Type any key to hear sound from the external app.
Using with Mac (MIDI Network Session):
1. Connect iPhone and Mac to the same Wi-Fi network.
2. Open MIDIWriter on iPhone.
3. On Mac, open "Audio MIDI Setup" and configure Network MIDI.
4. Connect your iPhone to the session.
5. Open a CoreMIDI app on Mac and select the network session as MIDI input.
6. Type on MIDIWriter to play sounds on Mac.
Credits:
Built-in sound engine uses "GeneralUser GS" SoundFont by S. Christian Collins.
https://schristiancollins.com/generaluser.php
MIDIWriter is a unique app that converts keyboard input into MIDI note messages. Each character you type instantly produces sound. You can also enter a phrase and play it back as a sequence with adjustable tempo and loop options.
KEY FEATURES:
Built-in Sound Engine:
No external app required! MIDIWriter includes a built-in General MIDI sound engine with 128 instruments and 9 drum kits. Just type and hear the sound immediately.
Phrase Playback:
Enter any text and play it as a musical sequence. Adjust the tempo (1-480 BPM), enable loop mode, and let your words become music. Space characters can be used as rests.
Drum Mode:
Switch to drum mode to play percussion sounds. Choose from 9 GM drum kits including Standard, Room, Power, Electronic, 808/909, Jazz, Brush, and Orchestral.
MIDI Output:
Send MIDI to other apps or external devices. Configure MIDI channel (1-16), program change (0-127), and destination. Works with Virtual MIDI and MIDI Network Session. Can be used simultaneously with the built-in sound engine.
Keyboard Support:
Use the on-screen software keyboard, or connect a Bluetooth/USB hardware keyboard for a real typing experience. Supports Japanese input with proper IME handling.
MIDI Network Session:
Connect to Mac or other iOS devices over Wi-Fi to control CoreMIDI-compatible sound generators remotely.
Dark Mode & Rotation:
Full support for light and dark modes. Works in portrait and landscape orientations on both iPhone and iPad.
Note: Playback stops when the app goes to background.
Using the Built-in Sound:
Simply launch MIDIWriter and start typing. Each key produces a unique sound based on its character code. Enable drum mode in Settings for percussion sounds.
Using with External MIDI Apps (Virtual MIDI):
1. Open a CoreMIDI sound generator app.
2. In MIDIWriter Settings, turn on "MIDI Output" and select the destination.
3. Type any key to hear sound from the external app.
Using with Mac (MIDI Network Session):
1. Connect iPhone and Mac to the same Wi-Fi network.
2. Open MIDIWriter on iPhone.
3. On Mac, open "Audio MIDI Setup" and configure Network MIDI.
4. Connect your iPhone to the session.
5. Open a CoreMIDI app on Mac and select the network session as MIDI input.
6. Type on MIDIWriter to play sounds on Mac.
Credits:
Built-in sound engine uses "GeneralUser GS" SoundFont by S. Christian Collins.
https://schristiancollins.com/generaluser.php
Latest updates
2.0.1
Minor bugs have been fixed.
