# Vibration analysis vs SKF Vertical shaft alignment

The clearest difference is review sentiment: Vibration analysis at 57% against SKF Vertical shaft alignment's 0%. SKF Vertical shaft alignment's advantage is in-app purchases (none vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Vibration analysis sells 2 one-off in-app purchases. SKF Vertical shaft alignment asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 22, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Vibration analysis | SKF Vertical shaft alignment |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (43 ratings)](https://appshunter.io/ios/app/vibration-analysis/id817385888/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | **57.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 68 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) | [SKF](https://appshunter.io/developer/472922971) |

## What reviewers say

### Vibration analysis

[App page](https://appshunter.io/ios/app/vibration-analysis/id817385888)

This app analyzes phone accelerometer data to create a vibration spectrum. It helps evaluate vibration strength, frequency, and the rotation speed of various mechanisms like fans and motors. Useful for quality checks, malfunction detection, and balancing homemade rotating parts.

**Highlights:** Vibration spectrum analysis, Rotation speed evaluation, Mechanism quality assessment, Malfunction monitoring, Customizable FFT size, Multiple units of measurement, Peak frequency detection

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Settings | $2.99 | one-time |
| External accelerometer | $2.99 | one-time |


### SKF Vertical shaft alignment

[App page](https://appshunter.io/ios/app/skf-vertical-shaft-alignment/id1149886803)

This utility app, when paired with specific hardware, enables intuitive and accurate vertical shaft alignments for rotating machines. It guides users through measurements, provides corrective values, and generates detailed reports. A demonstration mode is available for users without the hardware.

**Highlights:** Intuitive vertical shaft alignment, Quick three-point measurement guidance, Support for various bolt configurations, Demonstration mode for trial, Automatic alignment report generation, Explanatory videos and 3D animations, Machine library with QR code scanner

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

**In-app purchases:** none


## Frequently asked questions

### Is Vibration analysis free?

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

### Is SKF Vertical shaft alignment free?

SKF Vertical shaft alignment is free to download, with no in-app purchases.

### Do Vibration analysis or SKF Vertical shaft alignment have ads?

Neither Vibration analysis nor SKF Vertical shaft alignment shows ads.

### Which is updated more often, Vibration analysis or SKF Vertical shaft alignment?

Vibration analysis ships an update every 3 months, and SKF Vertical shaft alignment every 3 months. Most recently, Vibration analysis was updated on October 22, 2026 and SKF Vertical shaft alignment on October 21, 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.*