# iDensity vs Classic FX

The clearest difference is rating: iDensity at 4.9 against Classic FX's 4.6. iDensity also leads on price ($9.99 vs $12.99) and update cadence (monthly vs every 2 months). Classic FX's advantage is iOS requirement (13.4 vs 17.0). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

iDensity costs $9.99 and Classic FX $12.99 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 22 respectively. Written reviews split almost evenly too, at 86% and 87% positive.

iDensity ships an update monthly, Classic FX every 2 months. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | iDensity | Classic FX |
| --- | --- | --- |
| Price | **$9.99** | $12.99 |
| Rating | **[4.9 (48 ratings)](https://appshunter.io/ios/app/idensity/id464660779/reviews)** | [4.6 (22 ratings)](https://appshunter.io/ios/app/classic-fx/id1471754938/reviews) |
| Number of ratings | **48** | 22 |
| Positive reviews | 86.1% of reviews | **86.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Paid | Paid |
| Size | 17 MB | 12 MB |
| Requires iOS | 17.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [apeSoft](https://appshunter.io/developer/464660782) | [Igor Vasiliev](https://appshunter.io/developer/424401626) |

## 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


### Classic FX

[App page](https://appshunter.io/ios/app/classic-fx/id1471754938)

Enhance audio with a comprehensive sound effects processor. It offers equalization, reverb, and unique morphing capabilities to add brightness and expand soundscapes for instruments, vocals, and drums. Experiment with diverse effects and dynamic transitions for creative sound design.

**Highlights:** 22 unique processing algorithms, 40 diverse presets, Morphing between effect slots, Three-band equalizer, Algorithmic reverb, Envelope follower, Sequencer for rhythmic control

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iDensity free?

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

### Is Classic FX free?

Classic FX costs $12.99, with no in-app purchases.

### Which has better reviews, iDensity or Classic FX?

iDensity is rated higher. iDensity averages 4.9 out of 5 from 48 ratings, while Classic FX averages 4.6 from 22 ratings.

### Do iDensity or Classic FX have ads?

Neither iDensity nor Classic FX shows ads.

### Which is updated more often, iDensity or Classic FX?

iDensity ships an update monthly, and Classic FX every 2 months. Most recently, iDensity was updated on October 14, 2026 and Classic FX on October 9, 2026.

---

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