# RP vs Surreal Machines Diffuse

The clearest difference is rating: Surreal Machines Diffuse at 5.0 against RP's 3.9. Surreal Machines Diffuse also leads on review sentiment (100% vs 70%). RP's advantage is chart position (#200 vs unranked) and price ($5.99 vs $7.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

RP costs $5.99 and Surreal Machines Diffuse $7.99 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 3.9. Both are backed by a comparable volume of ratings — 15 and 6 respectively. Written reviews point the same way: 70% of RP's written reviews are positive against 100% of Surreal Machines Diffuse's.

## The numbers

| Metric | RP | Surreal Machines Diffuse |
| --- | --- | --- |
| Price | **$5.99** | $7.99 |
| Rating | [3.9 (15 ratings)](https://appshunter.io/ios/app/rp-1-delay/id1079530569/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/surreal-machines-diffuse/id6449301191/reviews)** |
| Number of ratings | **15** | 6 |
| Positive reviews | 70.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Paid | Paid |
| Best chart rank | **#200** | — |
| Size | 13 MB | 8 MB |
| Requires iOS | **9.0** | 14 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kai Aras](https://appshunter.io/developer/370820899) | [Surreal Machines](https://appshunter.io/developer/1688572197) |

## What reviewers say

### RP

[App page](https://appshunter.io/ios/app/rp-1-delay/id1079530569)

**Currently charting:** #200 Top Paid · Music (US App Store)

This app offers dual stereo delay lines for a vast array of audio effects, from simple echoes to complex soundscapes. It features individual bypass, modulation routing, and tempo synchronization options.

**Highlights:** Dual stereo delay lines, High- and Lowpass filters, Stereo spread and Looping, Separate modulation delay, Tempo sync via AudioUnit Host or Ableton Link, Delay times from 10ms to 2000ms

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is RP free?

RP costs $5.99, with no in-app purchases.

### Is Surreal Machines Diffuse free?

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

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

Surreal Machines Diffuse is rated higher. RP averages 3.9 out of 5 from 15 ratings, while Surreal Machines Diffuse averages 5.0 from 6 ratings.

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

Neither RP nor Surreal Machines Diffuse 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.*