# Shaft Alignment Tool TKSA 11 vs STS

The clearest difference is rating: STS at 5.0 against Shaft Alignment Tool TKSA 11's 4.3. STS also leads on iOS requirement (12.2 vs 16.0). Shaft Alignment Tool TKSA 11's advantage is ratings volume (4 vs 1). 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.

STS holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Shaft Alignment Tool TKSA 11 ships an update every 4 months, STS every 5 months. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Shaft Alignment Tool TKSA 11 | STS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/shaft-alignment-tool-tksa-11/id838116389/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sts-soft-starter-simulation/id1409663811/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 77 MB | 67 MB |
| Requires iOS | 16.0 | **12.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SKF](https://appshunter.io/developer/472922971) | [Siemens AG](https://appshunter.io/developer/394503271) |

## What reviewers say

### Shaft Alignment Tool TKSA 11

[App page](https://appshunter.io/ios/app/shaft-alignment-tool-tksa-11/id838116389)

This tool simplifies shaft alignment for rotating machinery using wireless communication with dedicated hardware. It offers a demonstration mode to experience the full process without the physical device, generating automatic reports and providing visual guidance.

**Highlights:** Wireless Bluetooth communication, Demonstration mode, Automatic alignment reports, Explanatory videos, 3D animations, Combined 2D/3D alignment view

**Features:** macOS Compatibility

**In-app purchases:** none


### STS

[App page](https://appshunter.io/ios/app/sts-soft-starter-simulation/id1409663811)

This utility helps users select the appropriate Siemens soft starter for their specific needs. It simulates applications based on various parameters and provides detailed reports, with direct links to product data.

**Highlights:** Soft starter application simulation, Input data for environment, motor, and load, Starting parameter configuration, Suggested soft starter selection, Simulation and component reports, Direct access to Siemens Industry Mall data

**In-app purchases:** none


## Frequently asked questions

### Is Shaft Alignment Tool TKSA 11 free?

Shaft Alignment Tool TKSA 11 is free to download, with no in-app purchases.

### Is STS free?

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

### Which has better reviews, Shaft Alignment Tool TKSA 11 or STS?

STS is rated higher. Shaft Alignment Tool TKSA 11 averages 4.3 out of 5 from 4 ratings, while STS averages 5.0 from 1 ratings.

### Do Shaft Alignment Tool TKSA 11 or STS have ads?

Neither Shaft Alignment Tool TKSA 11 nor STS shows ads.

### Which is updated more often, Shaft Alignment Tool TKSA 11 or STS?

Shaft Alignment Tool TKSA 11 ships an update every 4 months, and STS every 5 months. Most recently, Shaft Alignment Tool TKSA 11 was updated on October 21, 2026 and STS on October 25, 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.*