Turn MIDI into in-game performance
Import MIDI locally, convert it to in-game keyboard actions, and play automatically. Everything runs locally on your computer — quiet, reliable, and built for repeated use. Start free; unlock every advanced feature with a one-time Pro purchase.
Buy Pro once on Ko-fi for a fixed US$3 to unlock it. Your activation code is sent by email.
Features
One quiet workflow
From import to conversion to performance, every step is designed for repeated use. The interface is scannable and calm, so your attention stays on the music.
Import MIDI, convert locally
Drop in a MIDI file and it is automatically deduplicated and converted into keyboard actions. Three conversions — Flow, Pulse, and Lift — match different key counts, and equivalent actions are merged automatically.
Play with the game window focused
Playback keeps the game window focused; lose focus and it pauses automatically and saves your position, so you can pick up right where you left off.
History and notes
Every performance leaves a record you can annotate and favorite, making it easy to organize the songs you play often.
Start from markers
Save choruses and showcase sections as reusable start points, then jump straight in from a marker next time.
Playlists
Organize conversions into a list you can reorder and resume playing from any item.
Custom scripts (fork & edit)
Fork an editable script from any conversion, fine-tune the actions freely, and play it directly. The original conversion is untouched, so edits stay safe and reversible.
Free vs Pro
Free is already complete; Pro unlocks advanced performance
The free version handles importing, converting, starting and stopping playback, and browsing history. Pro adds advanced abilities like resume-from-breakpoint, start-from-marker, playlists, and custom scripts.
| Feature | Free | Pro One-time |
|---|---|---|
| Import MIDI and convert locally | ||
| Start / stop playback | ||
| Browse playback history | ||
| Notes and favorites | ||
| Browse playlists | ||
| Pause / resume | ||
| Resume from breakpoint (continue last position) | ||
| Start at a time / from a marker | ||
| Save a breakpoint when switching songs | ||
| Marker management | ||
| Playlist management | ||
| Custom scripts |
Pricing
Buy once — no account, no subscription
Buy Pro on Ko-fi at a fixed price to unlock every advanced feature forever. No monthly fee, no auto-renewal.
Fixed price ・ unlock once ・ lifetime use ・ no account
Buy Pro on Ko-fi at a fixed price to unlock it. Your activation code is emailed to you; buy several copies at once to gift them and each one gets its own code.
Download the free version firstAbout refunds
This product is a digital license. Once payment succeeds, your activation code is emailed to you, so refunds are not offered.
We recommend downloading the free version and trying it out first to confirm it fits your needs and your computer, then buying Pro. The free version is full-featured and has no time limit.
Use the free version as long as you like, then upgrade once you are sure
Your activation code is emailed to you after payment
Switching computers? Contact us to help reset the binding
FAQ
What to know before you buy
Ready to let your MIDI play itself?
Download for free to get started, then upgrade to Pro with a one-time purchase when you need advanced features.
Buy Pro on Ko-fi at a fixed price to unlock it. Your activation code is sent by email. No refunds.