# SIMATIC WinCC OA UI > Remote monitoring and control for SIMATIC WinCC OA industrial automation systems. (iPhone/iPad app by Siemens AG.) - Source: https://appshunter.io/ios/app/simatic-wincc-oa-ui/id1073943068 (this page in markdown: same URL + `.md`) - Developer: [Siemens AG](https://appshunter.io/developer/394503271) - Category: Utilities, Productivity - Price: Free - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 70 MB - Languages: German - Released: 2016-01-29 - Data updated: 2026-07-09 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/simatic-wincc-oa-ui/id1073943068/reviews.md ## What is SIMATIC WinCC OA UI? Stay in control of your SIMATIC WinCC OA plant - anytime, anywhere - with the WinCC OA UI App on your smartphone or tablet. Whether you're in the office, on the move, or on-site, you can monitor and intervene in real time. The app provides the same powerful functionality as the familiar desktop user interface - secure, reliable, and optimized for mobile use. Key Benefits at a Glance: - Flexible Remote Access: Monitor and control your plant from anywhere. - Multiple System Connections: Easily switch between different WinCC OA systems. - Secure Data Transmission: Connect via HTTP or HTTPS with optional SSL encryption. - Intuitive Operation: A familiar interface designed for mobile devices. Note: By downloading this app, you agree to the associated license agreements. ## Key features - Remote plant monitoring - Real-time control - Multiple system connections - Secure data transmission - Intuitive mobile interface ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/simatic-wincc-oa-ui/id1073943068/reviews.md ### 5/5 — Great industrial app! *2019-02-08* The mobile UI delivers as advertised. It’s easy to setup, modify and maintain. ## Frequently asked questions about SIMATIC WinCC OA UI ### What is SIMATIC WinCC OA UI? SIMATIC WinCC OA UI is a mobile application that allows users to monitor and control their SIMATIC WinCC OA plant from anywhere using a smartphone or tablet. It offers the same functionality as the desktop interface. ### Is SIMATIC WinCC OA UI free to download? Yes, SIMATIC WinCC OA UI is available for free download on supported devices. There are no in-app purchases or advertisements associated with the application. ### What devices support SIMATIC WinCC OA UI? SIMATIC WinCC OA UI is compatible with iPhone, iPad, and iPod devices. It is designed for mobile use on these platforms. ### How secure is the data transmission with SIMATIC WinCC OA UI? The app supports secure data transmission via HTTP or HTTPS, with optional SSL encryption for enhanced security. This ensures your plant data is protected during remote access. ### Can I connect to multiple WinCC OA systems with this app? Yes, SIMATIC WinCC OA UI allows you to easily switch between different WinCC OA systems. This flexibility is beneficial for users managing multiple plants or facilities. ### How often is SIMATIC WinCC OA UI updated? The latest version of SIMATIC WinCC OA UI is 3.21.3, last updated on May 28, 2026. Updates ensure the app remains reliable and secure for users. ### What is the age rating for SIMATIC WinCC OA UI? SIMATIC WinCC OA UI has an age rating of 4+. This indicates it is suitable for a wide range of users, though its professional nature means it's primarily intended for adults in industrial settings. ### Does SIMATIC WinCC OA UI have ads? No, SIMATIC WinCC OA UI does not contain advertisements. The app is free to download and use without any ad interruptions. ## Version history (last 5 releases) ### 3.21.4 — 2026-07-08 Updated to latest WinCC OA version 3.21 Enhanced compatibility with the latest WinCC OA features ### 3.21.3 — 2026-05-28 Updated to latest WinCC OA version 3.21 Enhanced compatibility with the latest WinCC OA features ### 3.21.2 — 2026-04-10 Updated to latest WinCC OA version 3.21 Enhanced compatibility with the latest WinCC OA features Upgraded iOS SDK to version 26.2 Improved Mobile UI startup performance when using OIDC authentication Updated Qt framework to version 6.8.6 ### 3.21.1 — 2026-03-04 Upgrade to WinCC OA Version 3.21 Extended compatibility with new WinCC OA features Improved stability and future readiness - App crashes on iOS at Qt login dialog for HTTP authentication at WinCC OA web server - Connection to older SSA server projects not possible with 3.21 release version of the app (3.21, main) - Sending log files to the web server does not work when connecting via Azure AD Application Proxy - Integrate Intune SDK into support/3.21 branch ### 3.20.9 — 2025-09-26 - General improvements and bug fixes ## Apps similar to SIMATIC WinCC OA UI | App | Rating | Price | Category | | --- | --- | --- | --- | | [PR electronics PPS](https://appshunter.io/ios/app/pr-electronics-pps/id654727116) | 5.0 (7) | Free | Utilities | | [NORDCON](https://appshunter.io/ios/app/nordcon/id1376522738) | 5.0 (1) | Free | Utilities | | [Siemens Event](https://appshunter.io/ios/app/siemens-event/id1437533405) | 3.0 (2) | Free | Utilities | | [PLC Simulator, PLC Trainer](https://appshunter.io/ios/app/plc-simulator-plc-trainer/id1326500777) | 4.0 (53) | Free | Utilities | | [Quint Power App](https://appshunter.io/ios/app/quint-power-app/id1599302860) | 4.0 (1) | Free | Utilities | | [Cabinet AR](https://appshunter.io/ios/app/cabinet-ar/id1279276270) | — | Free | Utilities | ## More apps by Siemens AG - [Industry Online Support](https://appshunter.io/ios/app/industry-online-support/id478868966) - [Easy CNC](https://appshunter.io/ios/app/easy-cnc/id498326185) - [Manufacturing 360](https://appshunter.io/ios/app/manufacturing-360/id498450268) - [Combi Valve Sizer](https://appshunter.io/ios/app/combi-valve-sizer/id504270106) - [syngo®.via WebViewer](https://appshunter.io/ios/app/syngovia-webviewer/id606296061) - [SINAMICS SELECTOR](https://appshunter.io/ios/app/sinamics-selector/id608929594) All apps by Siemens AG: https://appshunter.io/developer/394503271 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-09.*