# iDensity vs Vibro Acoustics

The clearest difference is price: Vibro Acoustics at Free against iDensity's $9.99. Vibro Acoustics also leads on update cadence (weekly vs monthly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Vibro Acoustics is free to download; iDensity costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iDensity ships an update monthly, Vibro Acoustics weekly. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | iDensity | Vibro Acoustics |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.9 (48 ratings)](https://appshunter.io/ios/app/idensity/id464660779/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 86.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Paid | — |
| Size | 17 MB | 58 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [apeSoft](https://appshunter.io/developer/464660782) | [Jonata Ferreira](https://appshunter.io/developer/1833299518) |

## 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


### Vibro Acoustics

[App page](https://appshunter.io/ios/app/vibro-acoustics/id6790415965)

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

**In-app purchases:** none


## Frequently asked questions

### Is iDensity free?

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

### Is Vibro Acoustics free?

Vibro Acoustics is free to download, with no in-app purchases.

### Do iDensity or Vibro Acoustics have ads?

Neither iDensity nor Vibro Acoustics shows ads.

### Which is updated more often, iDensity or Vibro Acoustics?

iDensity ships an update monthly, and Vibro Acoustics weekly. Most recently, iDensity was updated on October 14, 2026 and Vibro Acoustics on October 5, 2026.

---

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