# GrainHeads vs Somnideck

The clearest difference is monetization model: GrainHeads at free against Somnideck's freemium. Somnideck's advantage is rating (5.0 vs 4.7). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. GrainHeads sells 10 one-off in-app purchases and Somnideck sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Somnideck holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 14 and 11 respectively.

GrainHeads ships an update every 5 days, Somnideck every 4 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | GrainHeads | Somnideck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (14 ratings)](https://appshunter.io/ios/app/grainheads/id6760582834/reviews) | **[5.0 (11 ratings)](https://appshunter.io/ios/app/somnideck/id6774791722/reviews)** |
| Number of ratings | **14** | 11 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Size | 106 MB | 110 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andrei Nevar](https://appshunter.io/developer/1885164055) | [Oscar Dog, Inc.](https://appshunter.io/developer/6774791724) |

## 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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Event Horizon | $3.99 | one-time |
| Arrakis | $3.99 | one-time |
| Solaris | $3.99 | one-time |
| Protomolecule | $3.99 | one-time |
| Heptapod | $3.99 | one-time |
| Tannhäuser | $3.99 | one-time |
| Rama | $3.99 | one-time |
| Ansible | $3.99 | one-time |
| Unlock GrainHeads Pro | $11.99 | one-time |
| The Archive | $24.99 | one-time |


### Somnideck

[App page](https://appshunter.io/ios/app/somnideck/id6774791722)

Record, loop, and shape sounds for sleep, creativity, or professional audio. Features include waveform trimming, pitch shifting, EQ, reverb, and a library of original synthetic and field recordings.

**Highlights:** Record and loop audio, Trim loops with waveform editing, Adjust pitch, speed, and playback direction, Apply EQ, reverb, and saturation effects, On-device noise reduction, Library of synthetic and field recordings, Create custom ringtones

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Studio – Monthly | $3.99 | per month |
| Studio – Annual | $29.99 | per year |
| Studio – Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is GrainHeads free?

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

### Is Somnideck free?

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

### Which has better reviews, GrainHeads or Somnideck?

Somnideck is rated higher. GrainHeads averages 4.7 out of 5 from 14 ratings, while Somnideck averages 5.0 from 11 ratings.

### Do GrainHeads or Somnideck have ads?

Neither GrainHeads nor Somnideck shows ads.

### Which is updated more often, GrainHeads or Somnideck?

GrainHeads ships an update every 5 days, and Somnideck every 4 days. Most recently, GrainHeads was updated on October 31, 2026 and Somnideck on November 5, 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.*