# SIMATIC WinCC OA UI vs sDrives

The clearest difference is rating: SIMATIC WinCC OA UI at 5.0 against sDrives's 4.5. SIMATIC WinCC OA UI also leads on in-app purchases (none vs 1). sDrives's advantage is ratings volume (27 vs 2) and iOS requirement (12.0 vs 15.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. sDrives sells 1 one-off in-app purchase. SIMATIC WinCC OA UI asks for nothing beyond the download.

SIMATIC WinCC OA UI holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: sDrives has 27 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SIMATIC WinCC OA UI | sDrives |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/simatic-wincc-oa-ui/id1073943068/reviews)** | [4.5 (27 ratings)](https://appshunter.io/ios/app/sdrives-vfd-help/id1238863129/reviews) |
| Number of ratings | 2 | **27** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 70 MB | 12 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siemens AG](https://appshunter.io/developer/394503271) | [Evgeny Makarenkov](https://appshunter.io/developer/1214502122) |

## 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


### sDrives

[App page](https://appshunter.io/ios/app/sdrives-vfd-help/id1238863129)

Access alarm descriptions, troubleshooting guides, and user manuals for Siemens drives. This professional tool provides essential information for commissioning and service, supporting a wide range of drive models.

**Highlights:** Quick alarm description access, Troubleshooting guides, Links to user manuals, Support for multiple Siemens drive models, Multi-language alarm descriptions, In-app purchase to unlock all drives

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Drives | $1.99 | one-time |


## Frequently asked questions

### Is SIMATIC WinCC OA UI free?

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

### Is sDrives free?

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

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

SIMATIC WinCC OA UI is rated higher. SIMATIC WinCC OA UI averages 5.0 out of 5 from 2 ratings, while sDrives averages 4.5 from 27 ratings.

### Do SIMATIC WinCC OA UI or sDrives have ads?

Neither SIMATIC WinCC OA UI nor sDrives shows ads.

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

SIMATIC WinCC OA UI ships an update every 2 months, and sDrives every 2 months. Most recently, SIMATIC WinCC OA UI was updated on October 16, 2026 and sDrives 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.*