# GrainHeads vs Evil Otto

The clearest difference is price: GrainHeads at Free against Evil Otto's $4.99. GrainHeads also leads on rating (4.7 vs 4.5) and ratings volume (14 vs 4). Evil Otto's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.6). On ads and device support there is nothing between them.

GrainHeads is free to download; Evil Otto costs $4.99 up front. GrainHeads sells 1 one-off in-app purchase. Evil Otto asks for nothing beyond the download.

GrainHeads holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 14 and 4 respectively.

## The numbers

| Metric | GrainHeads | Evil Otto |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.7 (14 ratings)](https://appshunter.io/ios/app/grainheads/id6760582834/reviews)** | [4.5 (4 ratings)](https://appshunter.io/ios/app/evil-otto/id6760843522/reviews) |
| Number of ratings | **14** | 4 |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | **Free** | Paid |
| Size | 108 MB | 60 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Andrei Nevar](https://appshunter.io/developer/1885164055) | [Audio Damage, Inc.](https://appshunter.io/developer/1248448317) |

## What reviewers say

### GrainHeads

[App page](https://appshunter.io/ios/app/grainheads/id6760582834)

Transform any sound into unique textures and evolving sonic landscapes. This granular synthesizer offers deep control over individual sound grains, complex modulation, and a powerful step sequencer for experimental music creation.

**Highlights:** Multi-source granular engine, Shape individual grains with envelopes, Summing modulation matrix, Step sequencer with parameter lanes, Macros for expressive control, Re-routable effects chain

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock GrainHeads Pro | $11.99 | one-time |


### Evil Otto

[App page](https://appshunter.io/ios/app/evil-otto/id6760843522)

This audio effect applies simultaneous upward and downward compression across three frequency bands for detailed sound. It offers precise control over audio dynamics and includes features like sidechain input and real-time metering.

**Highlights:** Three-band OTT compression, Precise control parameters, Sidechain input for rhythmic effects, Real-time metering per band, Factory and user presets, Cross-platform preset compatibility

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

**In-app purchases:** none


## Frequently asked questions

### Is GrainHeads free?

GrainHeads is free to download, with in-app purchases available.

### Is Evil Otto free?

Evil Otto costs $4.99, with no in-app purchases.

### Which has better reviews, GrainHeads or Evil Otto?

GrainHeads is rated higher. GrainHeads averages 4.7 out of 5 from 14 ratings, while Evil Otto averages 4.5 from 4 ratings.

### Do GrainHeads or Evil Otto have ads?

Neither GrainHeads nor Evil Otto 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.*