Comparison

MIDIRack vs Heathcliff Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MIDIRack

Design custom MIDI control surfaces with a variety of instruments and sequencers. Unlock advanced features like a visual MIDI processing graph for complex routing and generative music creation. Use it standalone, as an AUv3 plugin, or to control desktop DAWs.

Highlights
  • Customizable touch surface design
  • KB-1 keyboard suite with MPE support
  • Advanced step and matrix sequencers
  • Visual MIDI processing graph
  • Built-in instruments and samplers
  • Connects to desktop DAWs via USB or Bluetooth
Features
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MIDIRack is a MIDI toolkit for iPad. Build a custom touch surface from the KB-1 keyboard suite, an all-new sequencer suite, knobs, faders, buttons and more — then unlock a visual MIDI processing graph (one time in-app purchase) and wire it into anything, from a simple custom controller to a full-on groovebox or a self-playing generative composer. Play it on its own and send MIDI anywhere, as an AUv3 plugin in your favourite host or a standalone instrument. THE BASE APP — PERFORMANCE SURFACE Design a custom control surface on a snapping grid: • The KB-1 keyboard suite — piano, diatonic chord pads, scale-locked keyboard, MPE Seaboard ribbon, MPE Strings grid (4ths), and a 4×4 GM drum-pad grid. Each is its own routable node with latch and octave shift. Successor to the KB-1 Expressive Keyboard Suite. • A suite of sequencers — drum, melody, chord, analog and CC step grids and a Matrix note grid, with a moving playhead, swing and microtiming. Per-step velocity, probability, tie and trigger conditions; pattern chaining and 4-pad scene switching for full arrangements; a knob-per-step analog machine that re-roots live as you play. • Knobs, faders, XY pads, buttons and live visualizers — bind to raw MIDI CC or graph parameters. On its own: a rich custom control surface builder — send MIDI and CC to any synth, app or hardware, no graph required. WITH YOUR DESKTOP DAW Expressive MPE hardware costs hundreds. MIDIRack turns the iPad you already own into a controller for Logic, Live, Bitwig, Cubase or any desktop DAW: • Two MPE surfaces — the Seaboard ribbon and the Strings grid send per-note pitch bend, slide and pressure to any MPE-capable instrument on your desk. • A controller that changes per track — MPE ribbon for the lead, drum pads for the beat, chord pads for the progression, faders mapped to CC for a mix move. Rearrange in seconds; save a surface per project. • Sequence it too — clock the step lanes to your DAW and drive its tracks. • Easy to connect — one USB cable to a Mac via IDAM (Inter-Device Audio and MIDI), or wirelessly over Bluetooth MIDI. No driver, no helper app. UNLOCK — MIDI GRAPH (in-app purchase) Wire MIDI In → processors → MIDI Out on a visual canvas: • 60+ node kinds — arpeggiators, scale/key quantizers, transposers, chords, echoes, swing, humanize, euclidean rhythms, random/generative melodies, LFOs, CC tools, an analog knob-per-step sequencer, a Matrix sequencer and a Counter. • Built-in instruments — Synth, Drums, a Sampler and a loop Slicer make sound right in the graph; no external synth required. • Emergence generators — Conway's Game of Life, Turing machine, Wolfram rules, Markov, bouncing balls, Lorenz attractor — for evolving, living patterns. • Presets — factory patches grouped by category (control surfaces, generators, keyboards, utilities): Amen Engine, Starfield, Conway Choir, Turing Bass, Cellular Drums… Save your own. ROUTING & MPE • MIDI Out exposes all 16 channels plus an MPE connector — multitimbral, multi-instrument setups. The built-in synth responds to MPE. • Every keyboard is its own node — process and route each one independently. PLAYS OUT OF THE BOX • Built-in polyphonic synth, drum kit, sampler & slicer or send MIDI to your gear via CoreMIDI and an always-on virtual port.

About

Heathcliff Pro

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Heathcliff Pro turns any iOS host into a DJ channel strip. Cut, mix, and blend one track into the next — without thinking about the right preset. Heathcliff Pro isn't your parametric EQ; it's the channel strip for transitions. Heathcliff Pro is built for low latency — aggressive performance targets keep it out of the way when you're playing live, and multiple instances won't tax your CPU. The tuning takes its cue from leading DJ mixers, with user-selectable character profiles so you can match the feel to your mixing style. * 3- or 4-band EQ — five character profiles from clean-cut to bleeding character * FX: Filter, Echo, Reverb, and Redux — switchable FX * Trim and volume — set the gain so the blend sits right * Character profiles — voicing presets for EQ, filter, and FX, matched to your mixing style * MIDI learn — supports legacy and modern 14-bit MIDI controllers (most modern DJ controllers are 14-bit). Map UI controls to your hardware; a DJ controller is the recommended way to play. * Low latency — plays live, stacks across multiple instances * AUv3 — works in any AUv3 host Note: Heathcliff Pro is an AUv3 plugin, not a standalone DJ app. The app runs inside a plugin host app like GarageBand, AUM, or Cubasis. Your DAW, your DJ moves. That's Heathcliff!

Screenshots

MIDIRack4 screens
Heathcliff Pro3 screens

Verdict

The call

The clearest difference is price: Heathcliff Pro at $2.99 against MIDIRack's $14.99. Heathcliff Pro also leads on in-app purchases (none vs 1) and iOS requirement (15.0 vs 17.0). MIDIRack's advantage is update cadence (every 4 days vs every 4 weeks). On ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

MIDIRack costs $14.99 and Heathcliff Pro $2.99 up front. MIDIRack sells 1 one-off in-app purchase. Heathcliff Pro asks for nothing beyond the download.

UpkeepUpdate frequency

MIDIRack ships an update every 4 days, Heathcliff Pro every 4 weeks. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
MIDIRack versus Heathcliff Pro: the parameters behind the verdict, then further details
ParameterMIDIRackHeathcliff Pro
Price$14.99$2.99 — better
Rating4.8 (8 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings8 — better—
Update frequencyEvery 4 days — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size28 MB13 MB
Age rating4+4+
DeveloperKai ArasJuan Segovia

In-app purchases

1 purchases

MIDIRack

One-time1
  • Graph Editor Unlock$7.99
None

Heathcliff Pro

No in-app purchases

Questions

Is MIDIRack free?
MIDIRack costs $14.99, and also offers in-app purchases.
Is Heathcliff Pro free?
Heathcliff Pro costs $2.99, with no in-app purchases.
Do MIDIRack or Heathcliff Pro have ads?
Neither MIDIRack nor Heathcliff Pro shows ads.
Which is updated more often, MIDIRack or Heathcliff Pro?
MIDIRack ships an update every 4 days, and Heathcliff Pro every 4 weeks. Most recently, MIDIRack was updated on October 7, 2026 and Heathcliff Pro on October 8, 2026.

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