# FrobulatorAU vs Violibration Studio

The clearest difference is in-app purchases: FrobulatorAU at none against Violibration Studio's 8. FrobulatorAU also leads on update cadence (every 9 days vs every 3 weeks) and iOS requirement (15.0 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Violibration Studio sells 8 one-off in-app purchases. FrobulatorAU asks for nothing beyond the download.

FrobulatorAU ships an update every 9 days, Violibration Studio every 3 weeks. The most recent releases landed on July 22, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | FrobulatorAU | Violibration Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/frobulatorau/id6760205581/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 2 MB | 16 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Caldwell](https://appshunter.io/developer/993500585) | [Thomas Richardson](https://appshunter.io/developer/1887851473) |

## What reviewers say

### FrobulatorAU

[App page](https://appshunter.io/ios/app/frobulatorau/id6760205581)

This audio effect plugin transforms sounds with spectral delay, adding unique character to music projects. It's a free and open-source tool designed for use in various audio applications, offering extensive creative possibilities.

**Highlights:** Spectral delay effect, AUv3 plugin, Use in GarageBand, AUM, and other DAWs, Multiple instances per project, Free and open-source, No ads or in-app purchases

**Features:** Vision Pro support

**In-app purchases:** none


### Violibration Studio

[App page](https://appshunter.io/ios/app/violibration-studio/id6761793199)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deep Focus | $0.29 | one-time |
| Breath Arc | $0.29 | one-time |
| Rainglass | $0.29 | one-time |
| Sunset Drift | $0.29 | one-time |
| Grounding Grid | $0.29 | one-time |
| Stride Signal | $0.29 | one-time |
| Pulse Lab | $0.29 | one-time |
| Unlock Everything | $1.99 | one-time |


## Frequently asked questions

### Is FrobulatorAU free?

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

### Is Violibration Studio free?

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

### Do FrobulatorAU or Violibration Studio have ads?

Neither FrobulatorAU nor Violibration Studio shows ads.

### Which is updated more often, FrobulatorAU or Violibration Studio?

FrobulatorAU ships an update every 9 days, and Violibration Studio every 3 weeks. Most recently, FrobulatorAU was updated on July 22, 2026 and Violibration Studio on September 13, 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.*