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MIDISynth

MIDI-driven live visuals
Stefan Hollekamp · Music
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App info

Developer
Stefan Hollekamp
Category
Music, Graphics & Design
Released
Oct 13, 2026
Version
1.0 (Oct 14, 2026)
Price
Free
Size
34.3 MB
Requires
iOS 17.0
Age rating
4+
Languages
English

In-app purchases

MIDISynth Pro — Monthly$3.99
MIDISynth Pro — Lifetime$69.99
MIDISynth Pro — Yearly$22.99
Current prices, App Store US.
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About MIDISynth

MIDISynth turns your MIDI controller into a visual instrument. Press a key, trigger a visual. Hold it, and the effect holds with you. Release, and it resolves. Everything is driven by the notes you are already playing, in real time, on a Metal-accelerated engine built for stage work. It was written for one specific frustration: the big VJ suites can do anything, but getting a single one-shot visual mapped to a single note takes ten minutes of patching. MIDISynth does that in seconds — and then stays out of the way. WHAT IT DOES • Map any MIDI note, chord or CC to a visual effect • Effects respond to velocity, note length and pitch • Real-time rendering on Apple's Metal framework • Output to a second or third display for projection or LED walls • Scenes hold a complete setup — switch instantly between songs • Blackout and Panic controls for when a show goes sideways VISUAL EFFECTS Pulse,…
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