# iDensity vs rrarrow

The clearest difference is price: rrarrow at $3.99 against iDensity's $9.99. iDensity's advantage is rating (4.9 vs 4.6). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

iDensity costs $9.99 and rrarrow $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iDensity holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 48 and 19 respectively. Written reviews point the same way: 86% of iDensity's written reviews are positive against 81% of rrarrow's.

iDensity ships an update monthly, rrarrow every 4 weeks. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | iDensity | rrarrow |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| Rating | **[4.9 (48 ratings)](https://appshunter.io/ios/app/idensity/id464660779/reviews)** | [4.6 (19 ratings)](https://appshunter.io/ios/app/rrarrow/id814966319/reviews) |
| Number of ratings | **48** | 19 |
| Positive reviews | **85.7% of reviews** | 81.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Paid | Paid |
| Size | 16 MB | 29 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [apeSoft](https://appshunter.io/developer/464660782) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## What reviewers say

### iDensity

[App page](https://appshunter.io/ios/app/idensity/id464660779)

This app offers real-time asynchronous sound file granulation, enabling users to create a wide array of audio effects. It provides tools for time/pitch manipulation, texture generation, buffer recording, and complex sound exploration. Designed for musicians and sound designers, it offers flexibility for live performance, studio composition, and on-the-go sound design.

**Highlights:** Real-time sound granulation, Time/pitch shifting and jittering, Texture generation, Buffer recording and manipulation, Scrub pad exploration, Dynamic envelope shaping, Audio Unit (AUv3) support

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

**In-app purchases:** none

**What reviewers like**

- ✨ Incredible soundscapes
- 🎛️ Powerful granular synthesis
- 🎚️ Multi-channel capability (6 channels)
- 🎧 Excellent for ambient music
- 💡 Innovative sound design tool

**What reviewers complain about**

- 🤔 Steep learning curve
- 🎨 Unappealing UI/color schemes (for some)
- 🎛️ Counterintuitive controls (for some)
- 💰 In-app purchases can be costly
- ❓ Lack of clear documentation/tutorials (historically)

**Reported bugs**

- Occasional crashes (historically)
- AudioBus issues (historically)
- Preset management not working correctly (historically)
- Transport sync not working (historically)
- GUI bugs (e.g., maximizing a strand)

**Requested features**

- Independent MIDI note control over pitch for each stream
- Alphabetical preset sorting
- Load existing project name into 'Save As'
- Multi-port output for AUM/Ape Matrix
- Built-in wave-editor for sample cutting


### rrarrow

[App page](https://appshunter.io/ios/app/rrarrow/id814966319)

Create experimental audio effects with extended feedback capabilities. This modular noise machine offers a simplified interface for fast assembly and flexible connectivity, allowing you to control processing parameters with the audio signal itself.

**Highlights:** Modular audio effect processing, Extended feedback capabilities, 20 audio processing blocks, Built-in audio recorder, MIDI controller support, Audiobus and Inter-App Audio support, Background audio playback

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iDensity free?

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

### Is rrarrow free?

rrarrow costs $3.99, with no in-app purchases.

### Which has better reviews, iDensity or rrarrow?

iDensity is rated higher. iDensity averages 4.9 out of 5 from 48 ratings, while rrarrow averages 4.6 from 19 ratings.

### Do iDensity or rrarrow have ads?

Neither iDensity nor rrarrow shows ads.

### Which is updated more often, iDensity or rrarrow?

iDensity ships an update monthly, and rrarrow every 4 weeks. Most recently, iDensity was updated on September 21, 2026 and rrarrow on September 24, 2026.

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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.*