# FAC Polyflo — Creative Modulation Flow AUv3

> AUv3 plugin for MIDI instrument and modular hardware modulation and sequencing. (iPhone/iPad app by Frederic Corvest.)

- Source: https://appshunter.io/ios/app/fac-polyflo/id6748651183 (this page in markdown: same URL + `.md`)
- Developer: [Frederic Corvest](https://appshunter.io/developer/1230164765)
- Category: Music
- Price: $9.99 with in-app purchases
- Rating: 4.90/5 from 11 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.4 · 5 MB
- Languages: American English
- Released: 2025-10-11
- Data updated: 2026-08-15
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/fac-polyflo/id6748651183/reviews.md

## What is FAC Polyflo?

• 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

## Key features

- 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

## Pricing and in-app purchases

Base price: $9.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Large Tip | $14.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Small Tip | $1.99 | one-time |


## Chart rankings

- #178 in Top Paid · Music (US App Store)

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/fac-polyflo/id6748651183/reviews.md

### 4/5 — Intéressant

*2026-01-26*

Beaucoup de possibilités, je n’ai tout exploré, mais c’est très prometteur !

### 5/5 — Very cool app

*2026-01-03*

I’ve only used it with iOS synths (no hardware) but it’s a very cool concept.

### 5/5 — So many Mod Options

*2025-12-19*

One of the most sophisticated modulators for iOS platform! If you can think it, Polyflo can create it. Brilliant Fred !

### 4/5 — Sweet generative midi and cv

*2025-10-27*

For in depth control of synthesis with dimension warping capabilities. Works perfectly on ipad I believe. Cheers

### 5/5 — Great Scott! The FAC Polyflo is alive! ALIVE, I tell you!

*2025-10-16*

A swirling cauldron of modulations and sound-mangling madness, contained within a deceptively polite iPad/Phone interface. It’s not just an effect—it’s a modular organism, pulsating with LFOs, envelopes, and routing possibilities that defy human reason!

Much like a Eurorack laboratory of floating patch cables — think Mutable Instruments Streams or Intellijel’s Quadrax fused with some unholy, virtual plasma — Polyflo allows me to chain modules, modulate anything, and breed new tones never before heard by mortal ears.

Its Math and algorithms scream, its modulators writhe, and when you feed it sound… it mutates! I have, on several occasions, frightened the cat and nearly blown a speaker. A fair price for progress!

In conclusion: FAC Polyflo is a digital Frankenstein’s patch bay, capable of transcending its app form to become the very heartbeat of your modular experiments. Handle it with care—or don’t. Either way, you’ll soon hear the lightning crackle in your headphones…

★★★★★ — Highly recommended for madmen, dreamers, and sonic alchemists.

Do what Dr. V. Von Oscillatorstein does. Flip the switch and let the lightning flow. What monster can you create.? 🧟‍♂️

## Frequently asked questions about FAC Polyflo

### What is FAC Polyflo?

FAC Polyflo is an AUv3 plugin designed for modulating and sequencing MIDI instruments and modular hardware. It can output both MIDI and analog control voltage (CV) simultaneously, making it ideal for hybrid setups.

### Does FAC Polyflo work on its own?

No, FAC Polyflo is an AUv3 effect and requires a compatible host application to run. It is not a standalone application.

### What devices support FAC Polyflo?

FAC Polyflo is available as a Universal Purchase for iOS (iPad/iPhone), macOS, and Vision Pro. It requires a compatible AUv3 host app on these devices.

### How does FAC Polyflo handle modulation?

It features two LFO generators with various waveforms, an envelope follower, and six FLO(W) processors that combine and shape signals using mathematical operations and logic for deep modulation.

### Can FAC Polyflo convert MIDI to CV?

Yes, FAC Polyflo can convert MIDI notes, pitch, and control changes into control voltages, serving as a powerful MIDI-to-CV solution within your software setup.

### What is the price of FAC Polyflo?

FAC Polyflo is available for a one-time purchase of $9.99. There are no subscription fees or in-app purchases mentioned for core functionality.

### How often is FAC Polyflo updated?

FAC Polyflo was last updated on October 11, 2025, with version 1.0. Future updates will likely be released to add features or improve stability.

### What is the user sentiment for FAC Polyflo?

Based on the available data, FAC Polyflo has a very high user rating of 4.9 stars from 10 ratings, indicating strong positive user sentiment.

## Version history (last 1 release)

### 1.0 — 2025-10-11

No release notes.

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## More apps by Frederic Corvest

- [FAC Chorus](https://appshunter.io/ios/app/fac-chorus/id1230164766)
- [FAC Maxima](https://appshunter.io/ios/app/fac-maxima/id1323117302)
- [FAC Transient](https://appshunter.io/ios/app/fac-transient/id1354088081)
- [FAC Envolver](https://appshunter.io/ios/app/fac-envolver/id1378195291)
- [FAC Bandit](https://appshunter.io/ios/app/fac-bandit/id1458633968)
- [FAC Alteza](https://appshunter.io/ios/app/fac-alteza/id1489369665)

All apps by Frederic Corvest: https://appshunter.io/developer/1230164765

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*