# Vibration vs Master Blonde

The clearest difference is price: Master Blonde at Free against Vibration's $9.99. Master Blonde also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 6 weeks). Vibration's advantage is chart position (#138 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Master Blonde is free to download; Vibration costs $9.99 up front. Vibration sells 1 one-off in-app purchase. Master Blonde asks for nothing beyond the download.

Vibration ships an update every 6 weeks, Master Blonde fortnightly. The most recent releases landed on October 23, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Vibration | Master Blonde |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.5 (11 ratings)](https://appshunter.io/ios/app/vibration/id301097580/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 79.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#138** | — |
| Size | 13 MB | 120 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Diffraction Limited Design LLC](https://appshunter.io/developer/294410307) | [Alghoul Advanced Solutions LTD](https://appshunter.io/developer/1576168298) |

## What reviewers say

### Vibration

[App page](https://appshunter.io/ios/app/vibration/id301097580)

**Currently charting:** #138 Top Paid · Business (US App Store)

This app analyzes vibration spectrums using your device's sensors. It can process time-series data, remove DC bias, apply windows, and perform FFT for frequency analysis. Results can be emailed for documentation.

**Highlights:** Built-in accelerometer and gyroscope analysis, Internal microphone and external Digiducer support, Adjustable sample rates and data lengths, FFT and frequency spectrum plotting, DC bias removal and Hamming window, Data export via email and iTunes, Apple Watch companion app for triggering

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Enable full Digiducer functionality | $19.99 | one-time |


### Master Blonde

[App page](https://appshunter.io/ios/app/master-blonde/id6803031400)

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

**In-app purchases:** none


## Frequently asked questions

### Is Vibration free?

Vibration costs $9.99, and also offers in-app purchases.

### Is Master Blonde free?

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

### Do Vibration or Master Blonde have ads?

Neither Vibration nor Master Blonde shows ads.

### Which is updated more often, Vibration or Master Blonde?

Vibration ships an update every 6 weeks, and Master Blonde fortnightly. Most recently, Vibration was updated on October 23, 2026 and Master Blonde on October 14, 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.*