Turn your iPhone or Mac into a real-time MIDI effects processor. Chain up to 4 MIDI effects, drive 4 to 8 independent timelines, and integrate into any digital or analog workflow.
Create evolving patterns, generate musical variations and take control of your hardware synths with unprecedented power.
Build your MIDI signal flow in the order you choose.
Play one note, trigger a full diatonic chord — always within the scale of your choice.
Direction, note value (1/1 to 1/64), octaves, Gate, Swing, Latch and Transpose. Synced to internal or external clock.
Rhythmic MIDI repeats, synced or free-running. Feedback, decaying velocity and per-echo transposition for cascading melodies.
Automatic parallel voices on every note — third, fifth, octave — always anchored in the chosen scale.
16 polyphonic steps with note, velocity and duration. Patterns that layer on top of your real-time playing.
Save your entire chain — order, parameters, scale — and switch between presets in one tap, even live.
Add up to 4 effect slots, move them, remove them freely. Each effect can also let the original MIDI signal pass through in parallel (thru) — and every link, effect or thru, has its own independent octave offset.
Create up to 4 independent timelines on iOS — 8 on macOS — each with its own effects chain and its own MIDI in/out routing. Switch between them in one tap, without losing the others' state — ideal for driving several synths or changing setups mid-show, from a single iPhone.
The same MIDI effects engine, as a native macOS app. Open each effect in its own window, organize your workspace like any other Mac app — at no extra cost.







MidiDeep's MIDI effects engine runs natively on macOS, free from the constraints of an iPhone screen.
iOS + macOS in a single purchase — no extra cost, no subscription.
Every effect, every timeline and every control panel can open in its own window.
Each patch — full chain, effect order, parameters, scale — exports as a .json file : backup, sharing, restore in one tap. Live, each patch is mapped to a fixed Program Change (0 to 127) : any MIDI pedalboard or controller can recall your presets remotely, without touching the iPhone.
Each patch saves to a .json file — backup, sharing between devices, restore anytime.
Each patch corresponds to a Program Change number (0-127), received from any standard MIDI pedalboard or controller.
Each effect — Chord, Arpeggio, Delay, Harmonize, Steps — also saves its own presets, individually controllable via macro or MIDI CC.
Connect your iPhone to your Mac via USB and enable the network MIDI session in Audio MIDI Setup. MidiDeep then appears as an external MIDI interface in your DAW — Ableton, Logic, GarageBand.
Pair MidiDeep directly to your computer or sequencer via low-latency Bluetooth LE. No cable, no driver — ideal in the studio and on stage.
With a simple USB-C to MIDI DIN adapter cable, turn your iPhone into a true standalone MIDI effects pedal — plugged directly between your keyboard and your hardware synth, no computer needed.
With a simple USB-C to MIDI DIN adapter cable, turn your iPhone into a true standalone MIDI effects pedal — plugged directly between your keyboard and your hardware synth, no computer needed.
Chain MidiDeep with your other iOS apps via the inter-app MIDI session. In AUM, Audiobus or GarageBand, MidiDeep processes your notes in real time — right at the heart of your mobile workflow.
Chain MidiDeep with your other iOS apps via the inter-app MIDI session. In AUM, Audiobus or GarageBand, MidiDeep processes your notes in real time — right at the heart of your mobile workflow.
The central hub of your setup: MidiDeep receives, transforms and redistributes MIDI in real time across all your devices — USB, Bluetooth, DIN or inter-app — regardless of protocol.
A compact, standalone hardware module, controlled by the MidiDeep app. It processes your MIDI effects directly, with no computer, and connects to your hardware synths.
MidiDeepStick will soon launch a crowdfunding campaign. Sign up to be notified when it goes live.
Notify meA dedicated, standalone MIDI effects processor in a desktop format — 4 independent timelines, each with its own effects chain, driven by hand.
A dedicated unit capable of processing 4 MIDI timelines in parallel — each timeline with its own effects chain (Chord, Arpeggio, Delay, Harmonize, Steps), its own MIDI input and its own MIDI output. Effect / Off / Move / Thru buttons and an encoder per timeline, global macros, instant Panic, 2 USB ports. No computer required.
Follow developmentFor any question about MidiDeep, MidiDeepStick or MidiDeep Desktop, contact Direct Graphic.
MidiDeep is an app developed by Direct Graphic S.A.S.
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