# Vertical Shaft Alignment vs Vibration Diagnostic Service

The clearest difference is rating: Vertical Shaft Alignment at 5.0 against Vibration Diagnostic Service's 2.0. Vertical Shaft Alignment also leads on iOS requirement (13.0 vs 15.6). Vibration Diagnostic Service's advantage is update cadence (every 2 months vs every 6 months) and ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Vertical Shaft Alignment holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Vertical Shaft Alignment ships an update every 6 months, Vibration Diagnostic Service every 2 months. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Vertical Shaft Alignment | Vibration Diagnostic Service |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vertical-shaft-alignment/id1499478849/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/vibration-diagnostic-service/id1634378327/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 94 MB | 120 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACOEM Group](https://appshunter.io/developer/1495816959) | [Johnson Controls, Inc.](https://appshunter.io/developer/503559091) |

## What reviewers say

### Vertical Shaft Alignment

[App page](https://appshunter.io/ios/app/vertical-shaft-alignment/id1499478849)

This app guides users through the vertical shaft alignment process for motor and pump applications using specific Bluetooth-connected sensors. It facilitates measurement and alignment, and allows for instant PDF report generation on-site.

**Highlights:** Bluetooth sensor connectivity, Guided measurement and alignment process, Icon-based adaptive user interface, Instant PDF report generation, Works with RT-300/AT-200 sensors

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

**In-app purchases:** none


### Vibration Diagnostic Service

[App page](https://appshunter.io/ios/app/vibration-diagnostic-service/id1634378327)

This service helps diagnose machinery health by analyzing vibratory forces emitted by HVAC and rotating equipment. It facilitates the creation of maintenance plans to prevent premature failure and downtime. Data is collected wirelessly via a connected device and analyzed by certified professionals.

**Highlights:** Vibration data collection, Wireless data acquisition, Cloud-based analysis, Predictive maintenance planning, Certified analyst reports, Email report delivery

**In-app purchases:** none


## Frequently asked questions

### Is Vertical Shaft Alignment free?

Vertical Shaft Alignment is free to download, with no in-app purchases.

### Is Vibration Diagnostic Service free?

Vibration Diagnostic Service is free to download, with no in-app purchases.

### Which has better reviews, Vertical Shaft Alignment or Vibration Diagnostic Service?

Vertical Shaft Alignment is rated higher. Vertical Shaft Alignment averages 5.0 out of 5 from 1 ratings, while Vibration Diagnostic Service averages 2.0 from 4 ratings.

### Do Vertical Shaft Alignment or Vibration Diagnostic Service have ads?

Neither Vertical Shaft Alignment nor Vibration Diagnostic Service shows ads.

### Which is updated more often, Vertical Shaft Alignment or Vibration Diagnostic Service?

Vertical Shaft Alignment ships an update every 6 months, and Vibration Diagnostic Service every 2 months. Most recently, Vertical Shaft Alignment was updated on October 29, 2026 and Vibration Diagnostic Service on November 3, 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.*