# Surreal Machines Diffuse vs sumFX

The clearest difference is review sentiment: Surreal Machines Diffuse at 100% against sumFX's 55%. Surreal Machines Diffuse also leads on rating (5.0 vs 4.4) and price ($7.99 vs $9.99). sumFX's advantage is iOS requirement (12.0 vs 14). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Surreal Machines Diffuse costs $7.99 and sumFX $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Surreal Machines Diffuse holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 6 and 12 respectively. Written reviews point the same way: 100% of Surreal Machines Diffuse's written reviews are positive against 55% of sumFX's.

## The numbers

| Metric | Surreal Machines Diffuse | sumFX |
| --- | --- | --- |
| Price | **$7.99** | $9.99 |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/surreal-machines-diffuse/id6449301191/reviews)** | [4.4 (12 ratings)](https://appshunter.io/ios/app/sumfx/id6450494474/reviews) |
| Number of ratings | 6 | **12** |
| Positive reviews | **100.0% of reviews** | 54.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 6 months |
| Monetization | Paid | Paid |
| Size | 8 MB | 44 MB |
| Requires iOS | 14 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Surreal Machines](https://appshunter.io/developer/1688572197) | [OSC Audio](https://appshunter.io/developer/1693533681) |

## What reviewers say

### Surreal Machines Diffuse

[App page](https://appshunter.io/ios/app/surreal-machines-diffuse/id6449301191)

This audio effect plugin blends analog-modeled delay with classic digital reverb, allowing users to morph between the two for unique soundscapes. It offers intuitive control over smearing, echoes, and damping, inspired by vintage hardware.

**Highlights:** Analog-modeled delay, Classic digital reverb, Morphing between delay and reverb, Nonlinearities and tape-style delay, Intuitive control over smearing, echoes, damping, AUV3 plugin compatibility

**In-app purchases:** none


### sumFX

[App page](https://appshunter.io/ios/app/sumfx/id6450494474)

This app is a versatile audio effects processor for musicians. It offers a modular design with multiple high-quality FX modules and customizable slots, allowing for quick creation of unique sounds. Focus on your music with intuitive controls and visual feedback.

**Highlights:** Modular multi-FX processor, 8 high-quality FX modules, 8 FX slots with Wet/Dry control, 2 LFOs per slot, 50+ cross-platform presets, Pre/post waveform view

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Surreal Machines Diffuse free?

Surreal Machines Diffuse costs $7.99, with no in-app purchases.

### Is sumFX free?

sumFX costs $9.99, with no in-app purchases.

### Which has better reviews, Surreal Machines Diffuse or sumFX?

Surreal Machines Diffuse is rated higher. Surreal Machines Diffuse averages 5.0 out of 5 from 6 ratings, while sumFX averages 4.4 from 12 ratings.

### Do Surreal Machines Diffuse or sumFX have ads?

Neither Surreal Machines Diffuse nor sumFX 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.*