# Horizontal Shaft Alignment vs FAN

The clearest difference is ratings volume: FAN at 7 against Horizontal Shaft Alignment's 2. FAN also leads on iOS requirement (11.0 vs 15.0). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Horizontal Shaft Alignment against 5.0 for FAN. Both are backed by a comparable volume of ratings — 2 and 7 respectively.

Horizontal Shaft Alignment ships an update every 4 months, FAN every 5 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Horizontal Shaft Alignment | FAN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/horizontal-shaft-alignment/id1499322319/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/fan-410-installation-reference/id1527588808/reviews) |
| Number of ratings | 2 | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 123 MB | 81 MB |
| Requires iOS | 15.0 | **11.0** |
| 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

### 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


### FAN

[App page](https://appshunter.io/ios/app/fan-410-installation-reference/id1527588808)

This app serves as a digital installation manual for HVAC Bacnet controls. It provides comprehensive guidance for technicians and installers working with these systems. Access detailed information and references directly on your device.

**Highlights:** HVAC Bacnet Controls Installation Manual, Digital Reference Guide, Technical Documentation, Installer Support

**In-app purchases:** none


## Frequently asked questions

### Is Horizontal Shaft Alignment free?

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

### Is FAN free?

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

### Which has better reviews, Horizontal Shaft Alignment or FAN?

Horizontal Shaft Alignment and FAN are both rated 5.0 out of 5 on the App Store, from 2 and 7 ratings respectively.

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

Neither Horizontal Shaft Alignment nor FAN shows ads.

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

Horizontal Shaft Alignment ships an update every 4 months, and FAN every 5 months. Most recently, Horizontal Shaft Alignment was updated on October 21, 2026 and FAN on October 24, 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.*