# STS vs OT Toolbox

The clearest difference is in-app purchases: STS at none against OT Toolbox's 1. STS also leads on iOS requirement (12.2 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. OT Toolbox sells 1 one-off in-app purchase. STS asks for nothing beyond the download.

## The numbers

| Metric | STS | OT Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sts-soft-starter-simulation/id1409663811/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | Free | — |
| Size | 67 MB | 5 MB |
| Requires iOS | **12.2** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Siemens AG](https://appshunter.io/developer/394503271) | [Dominik Gausmann](https://appshunter.io/developer/1870320985) |

## What reviewers say

### 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


### OT Toolbox

[App page](https://appshunter.io/ios/app/ot-toolbox/id6815303257)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OT Toolbox Pro | $3.99 | one-time |


## Frequently asked questions

### Is STS free?

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

### Is OT Toolbox free?

OT Toolbox is free to download, with in-app purchases available.

### Do STS or OT Toolbox have ads?

Neither STS nor OT Toolbox shows ads.

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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.*