# Surface Builder vs FAC Polyflo

The clearest difference is in-app purchases: Surface Builder at none against FAC Polyflo's 3. Surface Builder also leads on iOS requirement (13 vs 16.4). FAC Polyflo's advantage is price ($9.99 vs $14.99) and review sentiment (100% vs 80%). On ratings volume, ads, monetization model and device support there is nothing between them.

Surface Builder costs $14.99 and FAC Polyflo $9.99 up front. FAC Polyflo sells 3 one-off in-app purchases. Surface Builder asks for nothing beyond the download.

FAC Polyflo holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 15 and 11 respectively. Written reviews point the same way: 80% of Surface Builder's written reviews are positive against 100% of FAC Polyflo's.

## The numbers

| Metric | Surface Builder | FAC Polyflo |
| --- | --- | --- |
| Price | $14.99 | **$9.99** |
| Rating | [4.7 (15 ratings)](https://appshunter.io/ios/app/surface-builder/id6449735778/reviews) | **[4.9 (11 ratings)](https://appshunter.io/ios/app/fac-polyflo/id6748651183/reviews)** |
| Number of ratings | **15** | 11 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Paid | Paid |
| Size | 32 MB | 5 MB |
| Requires iOS | **13** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [4Pockets.com](https://appshunter.io/developer/370131860) | [Frederic Corvest](https://appshunter.io/developer/1230164765) |

## What reviewers say

### Surface Builder

[App page](https://appshunter.io/ios/app/surface-builder/id6449735778)

Create custom MIDI control surfaces for audio applications. Design interfaces with buttons, knobs, and faders to send and receive MIDI data, control audio clips, and customize appearance. Supports AUv3 plugins and standalone use.

**Highlights:** Customizable MIDI control surfaces, AUv3 plugin and standalone modes, Send/receive MIDI data (notes, controllers, pitch bend), Audio clip playback control, Multi-scene interface design, Drag and drop interface customization

**Features:** macOS Compatibility

**In-app purchases:** none


### FAC Polyflo

[App page](https://appshunter.io/ios/app/fac-polyflo/id6748651183)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (3)**

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


## Frequently asked questions

### Is Surface Builder free?

Surface Builder costs $14.99, with no in-app purchases.

### Is FAC Polyflo free?

FAC Polyflo costs $9.99, and also offers in-app purchases.

### Which has better reviews, Surface Builder or FAC Polyflo?

FAC Polyflo is rated higher. Surface Builder averages 4.7 out of 5 from 15 ratings, while FAC Polyflo averages 4.9 from 11 ratings.

### Do Surface Builder or FAC Polyflo have ads?

Neither Surface Builder nor FAC Polyflo shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*