# PLC Simulator, PLC Trainer vs STS

The clearest difference is rating: STS at 5.0 against PLC Simulator, PLC Trainer's 3.9. STS also leads on iOS requirement (12.2 vs 14.0). PLC Simulator, PLC Trainer's advantage is ratings volume (59 vs 1) and update cadence (every 2 months vs every 5 months). On price, ads, in-app purchases and monetization model 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 3.9. That said, the two scores are not equally well evidenced: PLC Simulator, PLC Trainer has 59 ratings behind it against 1, so its average is the more settled of the two.

PLC Simulator, PLC Trainer ships an update every 2 months, STS every 5 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | PLC Simulator, PLC Trainer | STS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (59 ratings)](https://appshunter.io/ios/app/plc-simulator-plc-trainer/id1326500777/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sts-soft-starter-simulation/id1409663811/reviews)** |
| Number of ratings | **59** | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 15 MB | 67 MB |
| Requires iOS | 14.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David White](https://appshunter.io/developer/911163945) | [Siemens AG](https://appshunter.io/developer/394503271) |

## What reviewers say

### PLC Simulator, PLC Trainer

[App page](https://appshunter.io/ios/app/plc-simulator-plc-trainer/id1326500777)

Learn the fundamentals of Programmable Logic Controllers (PLCs) with an interactive simulator. Experiment with basic programming concepts, including timers, counters, and logic instructions. Save your progress and revisit projects anytime.

**Highlights:** Interactive PLC simulator, Learn PLC basics, Experiment with programming, Save and load programs, Understand logic circuits, User-friendly interface

**Features:** macOS Compatibility, Vision Pro support

**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 PLC Simulator, PLC Trainer free?

PLC Simulator, PLC Trainer 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, PLC Simulator, PLC Trainer or STS?

STS is rated higher. PLC Simulator, PLC Trainer averages 3.9 out of 5 from 59 ratings, while STS averages 5.0 from 1 ratings.

### Do PLC Simulator, PLC Trainer or STS have ads?

Neither PLC Simulator, PLC Trainer nor STS shows ads.

### Which is updated more often, PLC Simulator, PLC Trainer or STS?

PLC Simulator, PLC Trainer ships an update every 2 months, and STS every 5 months. Most recently, PLC Simulator, PLC Trainer was updated on October 3, 2026 and STS on October 8, 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.*