# Vertical Shaft Alignment vs RSR Alignment App

The clearest difference is rating: Vertical Shaft Alignment at 5.0 against RSR Alignment App's 3.0. RSR Alignment App's advantage is update cadence (every 3 months vs every 6 months) and iOS requirement (11.0 vs 13.0). On price, ratings volume, 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 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Vertical Shaft Alignment ships an update every 6 months, RSR Alignment App every 3 months. The most recent releases landed on July 19, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Vertical Shaft Alignment | RSR Alignment App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vertical-shaft-alignment/id1499478849/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/rsr-alignment-app/id1503116170/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 94 MB | 57 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACOEM Group](https://appshunter.io/developer/1495816959) | [TMC CO.,LTD](https://appshunter.io/developer/920283832) |

## 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


### RSR Alignment App

[App page](https://appshunter.io/ios/app/rsr-alignment-app/id1503116170)

Measure camber and toe angles using your smartphone. The app displays angles for all four corners, allows zero point adjustment, and stores measurement data for later reference. It also lets you change the measurement interval.

**Highlights:** Measure camber angle, Measure toe angle, Display four-corner angles, Zero point adjustment, Store measurement data, Change measurement interval

**Features:** macOS Compatibility

**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 RSR Alignment App free?

RSR Alignment App is free to download, with no in-app purchases.

### Which has better reviews, Vertical Shaft Alignment or RSR Alignment App?

Vertical Shaft Alignment is rated higher. Vertical Shaft Alignment averages 5.0 out of 5 from 1 ratings, while RSR Alignment App averages 3.0 from 2 ratings.

### Do Vertical Shaft Alignment or RSR Alignment App have ads?

Neither Vertical Shaft Alignment nor RSR Alignment App shows ads.

### Which is updated more often, Vertical Shaft Alignment or RSR Alignment App?

Vertical Shaft Alignment ships an update every 6 months, and RSR Alignment App every 3 months. Most recently, Vertical Shaft Alignment was updated on July 19, 2026 and RSR Alignment App on June 11, 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.*