# SIMATIC WinCC OA UI vs Siemens Event

The clearest difference is review sentiment: SIMATIC WinCC OA UI at 100% against Siemens Event's 50%. SIMATIC WinCC OA UI also leads on rating (5.0 vs 3.0). Siemens Event's advantage is update cadence (fortnightly vs every 2 months). 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.

SIMATIC WinCC OA UI holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of SIMATIC WinCC OA UI's written reviews are positive against 50% of Siemens Event's.

SIMATIC WinCC OA UI ships an update every 2 months, Siemens Event fortnightly. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | SIMATIC WinCC OA UI | Siemens Event |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/simatic-wincc-oa-ui/id1073943068/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/siemens-event/id1437533405/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 70 MB | 38 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siemens AG](https://appshunter.io/developer/394503271) | [DGS GmbH](https://appshunter.io/developer/1399796147) |

## What reviewers say

### SIMATIC WinCC OA UI

[App page](https://appshunter.io/ios/app/simatic-wincc-oa-ui/id1073943068)

Monitor and control your SIMATIC WinCC OA plant remotely from your smartphone or tablet. Access the same powerful functionality as the desktop interface, ensuring secure and reliable real-time operation from anywhere.

**Highlights:** Remote plant monitoring, Real-time control, Multiple system connections, Secure data transmission, Intuitive mobile interface

**In-app purchases:** none


### Siemens Event

[App page](https://appshunter.io/ios/app/siemens-event/id1437533405)

This official event app provides comprehensive information for Siemens activities at selected events. Access agendas, schedules, and details on exhibits and guests. Users can interact with a newsfeed, book workspaces and sessions, and see other participants.

**Highlights:** Event information overview, Detailed agendas and schedules, Highlight content on exhibits and guests, Interactive newsfeed, Workspace and session booking, Participant visibility

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

**In-app purchases:** none


## Frequently asked questions

### Is SIMATIC WinCC OA UI free?

SIMATIC WinCC OA UI is free to download, with no in-app purchases.

### Is Siemens Event free?

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

### Which has better reviews, SIMATIC WinCC OA UI or Siemens Event?

SIMATIC WinCC OA UI is rated higher. SIMATIC WinCC OA UI averages 5.0 out of 5 from 2 ratings, while Siemens Event averages 3.0 from 2 ratings.

### Do SIMATIC WinCC OA UI or Siemens Event have ads?

Neither SIMATIC WinCC OA UI nor Siemens Event shows ads.

### Which is updated more often, SIMATIC WinCC OA UI or Siemens Event?

SIMATIC WinCC OA UI ships an update every 2 months, and Siemens Event fortnightly. Most recently, SIMATIC WinCC OA UI was updated on October 25, 2026 and Siemens Event on October 29, 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.*