FAC Polyflo vs Maxy MIDI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FAC Polyflo
This AUv3 plugin allows you to modulate and sequence MIDI instruments and modular hardware. It outputs both MIDI and analog CV simultaneously, supporting hybrid digital and analog setups. Convert various signals into control voltages for deep and flexible modulation.
- AUv3 plugin for modulation and sequencing
- Outputs MIDI and analog CV simultaneously
- Converts signals to control voltages
- Two LFO generators with syncing
- Integrated envelope follower
- Six FLO(W) processors for signal shaping
- Universal Purchase for iOS, macOS, Vision Pro
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• AUv3 plugin to modulate and sequence MIDI instruments and modular hardware • Outputs MIDI and analog CV simultaneously for integrated hybrid setups • Fully functional in software-only environments with full MIDI support • Converts LFOs, MIDI notes, pitch, and control changes into control voltages • Includes two LFO generators with random spline, cross-modulation and syncing • Integrated envelope follower to track audio input or sidechain signal • Six FLO(W) processors for combining and shaping signals with math and logic • Each FLO supports 18 inputs with individual polarity, divider and multiplier • Multi-out support, built-in waveform viewer, Audio FX, and MIDI FX • Advanced Responsive Design, portrait and landscape views • Universal Purchase: AUv3 for iOS (iPad/iPhone), macOS and Vision Pro FAC Polyflo is an AUv3 plugin for modulating and sequencing MIDI instruments and modular gear via control voltage. It outputs MIDI and analog CV simultaneously, making it well-suited for hybrid setups that combine digital and analog equipment. The plugin includes two LFO generators offering 10 waveforms, including classic shapes and random spline, with support for cross-modulation and syncing. It also features an envelope follower that tracks audio FX input or an external sidechain. The generated signals, together with the host clock and MIDI input, are fed into six independent FLO(W) processors. These processors combine, shape, and route inputs using math operations, conditional logic, and comparators. Each FLO includes individual polarity, division, and multiplication controls, providing deep and flexible modulation that balances chaotic creativity with precise timing. Each FLO processor output is connected to its own output bus, enabling easy integration with hardware via DC-coupled audio interfaces like the Expert Sleepers ES-9. For simpler setups, FLO outputs can be routed to the stereo output. FAC Polyflo can also convert MIDI notes, pitch, and control changes into control voltages, making it a powerful MIDI-to-CV solution. If you prefer to work exclusively with software, the plugin runs smoothly in software-only environments with full MIDI support, making it equally suited for purely digital workflows. FAC Polyflo works as both an Audio Unit FX and MIDI FX, featuring a clean, touch-optimized interface with precise control and waveform visualization. It’s available as an AUv3 for iOS (iPad/iPhone), macOS, and Vision Pro, and requires a compatible AUv3 host app to run. This is an AUv3 Effect and requires a compatible host to work The documentation is available at fredantoncorvest.com/FAC_Polyflo.html
Maxy MIDI
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Maxy MIDI turns an iPhone or iPad into a MIDI controller you design yourself. Drop knobs, faders, pads, keyboards, launch grids, mixer strips and DJ controls onto a page, set what each one sends, and play. Boards and pages Every board is a set of pages, each on its own MIDI channel, laid out on a grid. Tap a tab to change page while you play. Boards are saved on the device, exported as files and shared by AirDrop, so a layout built on an iPad can be opened on a phone. Controls Rotary knobs and endless encoders, vertical and horizontal faders, motorised faders that follow the DAW, XY pads, ribbons, pitch and modulation wheels, buttons and toggles, velocity pads and drum racks, a piano keyboard, Launchpad-style clip grids, transport buttons, mixer strips, crossfaders, three-band DJ EQ with kills, and a deck with a jog wheel. Velocity is measured by where your finger lands, by how much glass it covers, or fixed. Getting to your computer Wi-Fi network session for a Mac or for rtpMIDI on Windows, Bluetooth LE, USB cable, and virtual ports for other apps on the same device. MIDI 2.0 is used where the port supports it. There is a MIDI monitor for when something is not arriving. Speaking your DAW's language Mackie Control for mixers and transport, HUI for Pro Tools, and OSC over UDP for Reaper, Bitwig, Resolume, TouchDesigner and VCV Rack. An Ableton Live remote script is bundled and can be sent to your Mac. Controller scripts for Bitwig and Reaper can be generated from a board. Generators A clock that sends MIDI clock or follows one, an arpeggiator, chord pads, a step sequencer with conditional trigs and probability, a Euclidean sequencer, an LFO to any CC, note repeat, a note echo, a Turing machine melody, and a beat generator with hand-written patterns for two dozen genres. Ableton Link is supported when the LinkKit framework is added. Made to be simple Every control works the moment it is dropped on a page, with a sensible default. The inspector shows the common settings first and hides the rest. MIDI Learn wires a control to whatever you move in the DAW. More than sixty templates give you a layout to start from, from Serum and Diva to Logic Pro, a drum rack and a DJ board. What you need to know MIDI does not tell software what to do by itself. It sends numbers on channels, and the software at the other end decides what those numbers mean. A template is a layout whose numbers never clash. Hardware boards are wired from the maker's MIDI chart; the Logic, Bitwig, Cubase, Studio One and Pro Tools boards speak Mackie Control or HUI, which those DAWs take once you add the surface; Ableton Live has a bundled script. For everything else you map the controls in your DAW, usually by moving a control in Maxy MIDI while the DAW is listening. Each template says which it is, and the app has a walkthrough that sends each control in turn to make learning quick. Free and Pro The free app gives you one board of three pages, one of each kind of control on a page and one generator at a time, and lets you open and play every template within those limits. Maxy MIDI Pro is a one-time purchase that removes the limits, keeps templates as boards of your own, turns on board export and sharing, OSC sending and the rest of the beat genres.
Screenshots
Verdict
The clearest difference is price: Maxy MIDI at Free against FAC Polyflo's $9.99. FAC Polyflo's advantage is iOS requirement (16.4 vs 18.0). On ads, in-app purchases 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
Maxy MIDI is free to download; FAC Polyflo costs $9.99 up front. FAC Polyflo sells 3 one-off in-app purchases and Maxy MIDI sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | FAC Polyflo | Maxy MIDI |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.9 (11 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 11 — better | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Frederic Corvest | PDS Technology LTD |
In-app purchases
FAC Polyflo
- Small Tip$1.99
- Medium Tip$4.99
- Large Tip$14.99
Maxy MIDI
- Maxy MIDI Pro$9.99









