# IMPULSation vs GSiRotary

The clearest difference is price: IMPULSation at $9.99 against GSiRotary's $19.99. IMPULSation also leads on update cadence (every 4 months vs every 17 months) and ratings volume (14 vs 3). GSiRotary's advantage is review sentiment (80% vs 50%). On rating, ads, in-app purchases and monetization model there is nothing between them.

IMPULSation costs $9.99 and GSiRotary $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.7 for IMPULSation against 3.7 for GSiRotary. Both are backed by a comparable volume of ratings — 14 and 3 respectively. Written reviews are what separate them: 50% of IMPULSation's written reviews are positive against 80% of GSiRotary's.

IMPULSation ships an update every 4 months, GSiRotary every 17 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | IMPULSation | GSiRotary |
| --- | --- | --- |
| Price | **$9.99** | $19.99 |
| Rating | **[3.7 (14 ratings)](https://appshunter.io/ios/app/impulsation/id1469723900/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/gsirotary/id1644548509/reviews) |
| Number of ratings | **14** | 3 |
| Positive reviews | 50.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 17 months |
| Monetization | Paid | Paid |
| Size | 139 MB | 12 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MIDIculous LLC](https://appshunter.io/developer/579058990) | [Genuine Soundware](https://appshunter.io/developer/1560880481) |

## What reviewers say

### IMPULSation

[App page](https://appshunter.io/ios/app/impulsation/id1469723900)

This app is a powerful convolution reverb that lets you load custom impulse responses for endless sound possibilities. Recreate classic amp tones, spaces, and delays with optimized signal processing. It offers a user-friendly interface with essential controls for precise sound shaping.

**Highlights:** Load custom impulse responses (.wav, .aif), AUv3 and AAX plugin support, 88 factory presets, MIDI Learn and Program Change, Pre-Delay, Wet/Dry, Decay controls, Stereo Widener, iCloud Backup and Sharing

**Features:** Vision Pro support

**In-app purchases:** none


### GSiRotary

[App page](https://appshunter.io/ios/app/gsirotary/id1644548509)

This AUv3 plugin emulates the iconic sound of Leslie rotary speakers for iPad. It offers detailed control over speeds, ramp times, balance, and microphone placement, along with built-in tube overdrive and reverb. Achieve authentic vintage speaker tones with low CPU impact.

**Highlights:** AUv3 plugin for compatible host apps, Emulates Leslie tube models (122, 147, etc.), Adjustable speeds for upper and lower speakers, Adjustable ramp up and down times, Adjustable balance between speakers, Adjustable microphone position, Built-in tube overdrive and digital reverb

**In-app purchases:** none


## Frequently asked questions

### Is IMPULSation free?

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

### Is GSiRotary free?

GSiRotary costs $19.99, with no in-app purchases.

### Which has better reviews, IMPULSation or GSiRotary?

IMPULSation is rated higher. IMPULSation averages 3.7 out of 5 from 14 ratings, while GSiRotary averages 3.7 from 3 ratings.

### Do IMPULSation or GSiRotary have ads?

Neither IMPULSation nor GSiRotary shows ads.

### Which is updated more often, IMPULSation or GSiRotary?

IMPULSation ships an update every 4 months, and GSiRotary every 17 months. Most recently, IMPULSation was updated on October 24, 2026 and GSiRotary on October 24, 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.*