# WatchDrums vs GrainHeads

The clearest difference is price: GrainHeads at Free against WatchDrums's $0.99. WatchDrums's advantage is in-app purchases (none vs 10). On ads, device support and iOS requirement there is nothing between them.

GrainHeads is free to download; WatchDrums costs $0.99 up front. GrainHeads sells 10 one-off in-app purchases. WatchDrums asks for nothing beyond the download.

## The numbers

| Metric | WatchDrums | GrainHeads |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.7 (14 ratings)](https://appshunter.io/ios/app/grainheads/id6760582834/reviews)** |
| Number of ratings | — | **14** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Monetization | — | Free |
| Size | 11 MB | 106 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gregory Koenig](https://appshunter.io/developer/1021814727) | [Andrei Nevar](https://appshunter.io/developer/1885164055) |

## What reviewers say

### WatchDrums

[App page](https://appshunter.io/ios/app/watchdrums/id6758635208)

**Features:** Apple Watch app

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is WatchDrums free?

WatchDrums costs $0.99, with no in-app purchases.

### Is GrainHeads free?

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

### Do WatchDrums or GrainHeads have ads?

Neither WatchDrums nor GrainHeads 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.*