# CATService vs Horizontal Shaft Alignment

The clearest difference is price: Horizontal Shaft Alignment at Free against CATService's $450.00. Horizontal Shaft Alignment also leads on update cadence (every 4 months vs every 15 months) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

Horizontal Shaft Alignment is free to download; CATService costs $450.00 up front. Neither carries in-app purchases, so what you see is what you pay.

CATService ships an update every 15 months, Horizontal Shaft Alignment every 4 months. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | CATService | Horizontal Shaft Alignment |
| --- | --- | --- |
| Price | $450.00 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/horizontal-shaft-alignment/id1499322319/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 13 MB | 123 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [ACOEM Group](https://appshunter.io/developer/1495816959) |

## What reviewers say

### CATService

[App page](https://appshunter.io/ios/app/catservice/id961689619)

**Features:** macOS Compatibility

**In-app purchases:** none


### Horizontal Shaft Alignment

[App page](https://appshunter.io/ios/app/horizontal-shaft-alignment/id1499322319)

This app assists with horizontal shaft alignment for machinery like motors and pumps. It guides users through the measurement and alignment process using Bluetooth-connected sensors, offering features like Feetlock for challenging situations and instant PDF reporting.

**Highlights:** Bluetooth sensor connectivity, Guided measurement and alignment process, Feetlock function for base-bound machines, Instant PDF report generation, ACOEM Cloud integration for reporting and sharing, VertiZontal adjustment without re-measuring

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

**In-app purchases:** none


## Frequently asked questions

### Is CATService free?

CATService costs $450.00, with no in-app purchases.

### Is Horizontal Shaft Alignment free?

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

### Do CATService or Horizontal Shaft Alignment have ads?

Neither CATService nor Horizontal Shaft Alignment shows ads.

### Which is updated more often, CATService or Horizontal Shaft Alignment?

CATService ships an update every 15 months, and Horizontal Shaft Alignment every 4 months. Most recently, CATService was updated on October 6, 2026 and Horizontal Shaft Alignment on October 17, 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.*