# Vertical Shaft Alignment vs Spindle Dynamics Studio

The clearest difference is update cadence: Spindle Dynamics Studio at every 2 months against Vertical Shaft Alignment's every 6 months. Vertical Shaft Alignment's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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 ships an update every 6 months, Spindle Dynamics Studio every 2 months. The most recent releases landed on July 19, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Vertical Shaft Alignment | Spindle Dynamics Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vertical-shaft-alignment/id1499478849/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 94 MB | 107 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [ACOEM Group](https://appshunter.io/developer/1495816959) | [Sens-OS](https://appshunter.io/developer/1533837951) |

## 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


### Spindle Dynamics Studio

[App page](https://appshunter.io/ios/app/spindle-dynamics-studio/id1661428624)

**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 Spindle Dynamics Studio free?

Spindle Dynamics Studio is free to download, with no in-app purchases.

### Do Vertical Shaft Alignment or Spindle Dynamics Studio have ads?

Neither Vertical Shaft Alignment nor Spindle Dynamics Studio shows ads.

### Which is updated more often, Vertical Shaft Alignment or Spindle Dynamics Studio?

Vertical Shaft Alignment ships an update every 6 months, and Spindle Dynamics Studio every 2 months. Most recently, Vertical Shaft Alignment was updated on July 19, 2026 and Spindle Dynamics Studio on September 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.*