# auGEN X vs GRM studio

The clearest difference is price: GRM studio at Free against auGEN X's $9.99. GRM studio also leads on update cadence (weekly vs every 3 months) and review sentiment (100% vs 86%). auGEN X's advantage is rating (4.6 vs 4.0) and ratings volume (12 vs 1). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

GRM studio is free to download; auGEN X costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

auGEN X holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: auGEN X has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 86% of auGEN X's written reviews are positive against 100% of GRM studio's, so the app with the better star average is not the one people write more warmly about.

auGEN X ships an update every 3 months, GRM studio weekly. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | auGEN X | GRM studio |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.6 (12 ratings)](https://appshunter.io/ios/app/augen-x/id1439844878/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/grm-studio/id1448936613/reviews) |
| Number of ratings | **12** | 1 |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 57 MB | 35 MB |
| Requires iOS | **9.0** | 9.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [auDSPr](https://appshunter.io/developer/1439844877) | [Institut National de l'Audiovisuel](https://appshunter.io/developer/480730772) |

## What reviewers say

### auGEN X

[App page](https://appshunter.io/ios/app/augen-x/id1439844878)

This app generates a wide variety of audio signals for both creative sound design and precise audio system testing. It features a versatile oscillator, noise generator, and impulse generator, functioning as a standalone app or an AUv3 Audio Unit Extension.

**Highlights:** Full-featured audio oscillator with 4 wave shapes, High-quality noise generator (white and pink), Impulse generator for reverb testing, AUv3 Audio Unit Extension and Stand-Alone App, MIDI In and BPM Sync support, Precise signal control with intuitive UI

**Features:** macOS Compatibility

**In-app purchases:** none


### GRM studio

[App page](https://appshunter.io/ios/app/grm-studio/id1448936613)

This music creation app offers advanced sound manipulation tools for musicians and sound designers. Explore and edit audio files through direct waveform manipulation and multiple playback processes.

**Highlights:** Real-time sound transformation simulation, Direct waveform exploration, Virtual editing and montage, Multiple playback processes, Granular synthesis

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

**In-app purchases:** none


## Frequently asked questions

### Is auGEN X free?

auGEN X costs $9.99, with no in-app purchases.

### Is GRM studio free?

GRM studio is free to download, with no in-app purchases.

### Which has better reviews, auGEN X or GRM studio?

auGEN X is rated higher. auGEN X averages 4.6 out of 5 from 12 ratings, while GRM studio averages 4.0 from 1 ratings.

### Do auGEN X or GRM studio have ads?

Neither auGEN X nor GRM studio shows ads.

### Which is updated more often, auGEN X or GRM studio?

auGEN X ships an update every 3 months, and GRM studio weekly. Most recently, auGEN X was updated on October 1, 2026 and GRM studio on October 2, 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.*