# EXFO OPM vs Vertical Shaft Alignment

The clearest difference is rating: Vertical Shaft Alignment at 5.0 against EXFO OPM's 1.0. EXFO OPM's advantage is ratings volume (6 vs 1) and iOS requirement (10.0 vs 13.0). On price, update cadence, ads and in-app purchases 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 1.0. That said, the two scores are not equally well evidenced: EXFO OPM has 6 ratings behind it against 1, so its average is the more settled of the two.

EXFO OPM ships an update every 7 months, Vertical Shaft Alignment every 6 months. The most recent releases landed on September 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | EXFO OPM | Vertical Shaft Alignment |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (6 ratings)](https://appshunter.io/ios/app/exfo-opm/id1342361869/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vertical-shaft-alignment/id1499478849/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 62 MB | 94 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EXFO Inc.](https://appshunter.io/developer/462252930) | [ACOEM Group](https://appshunter.io/developer/1495816959) |

## What reviewers say

### EXFO OPM

[App page](https://appshunter.io/ios/app/exfo-opm/id1342361869)

This application connects to specific EXFO optical power meters and checkers via Bluetooth to display live measurements. It allows users to manage test configurations, store and edit measurement data, add GPS coordinates, and generate shareable PDF reports.

**Highlights:** Bluetooth connectivity to EXFO devices, Live measurement display, Measurement storage and management, Test configuration management, PDF test report generation, GPS coordinate tagging, JSON export for MPC-100

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is EXFO OPM free?

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

### Is Vertical Shaft Alignment free?

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

### Which has better reviews, EXFO OPM or Vertical Shaft Alignment?

Vertical Shaft Alignment is rated higher. EXFO OPM averages 1.0 out of 5 from 6 ratings, while Vertical Shaft Alignment averages 5.0 from 1 ratings.

### Do EXFO OPM or Vertical Shaft Alignment have ads?

Neither EXFO OPM nor Vertical Shaft Alignment shows ads.

### Which is updated more often, EXFO OPM or Vertical Shaft Alignment?

EXFO OPM ships an update every 7 months, and Vertical Shaft Alignment every 6 months. Most recently, EXFO OPM was updated on September 25, 2026 and Vertical Shaft Alignment on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*