# Remote PLC vs SIMATIC Unified Air

The clearest difference is update cadence: Remote PLC at every 5 months against SIMATIC Unified Air's every 12 months. SIMATIC Unified Air's advantage is iOS requirement (14.0 vs 16.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Remote PLC ships an update every 5 months, SIMATIC Unified Air every 12 months. The most recent releases landed on October 12, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Remote PLC | SIMATIC Unified Air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/remote-plc/id6450824863/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 12 months |
| Monetization | Free | — |
| Size | 92 MB | 52 MB |
| Requires iOS | 16.1 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Automationdirect.com](https://appshunter.io/developer/441915589) | [Siemens AG](https://appshunter.io/developer/394503271) |

## What reviewers say

### Remote PLC

[App page](https://appshunter.io/ios/app/remote-plc/id6450824863)

Monitor and control Automationdirect.com's CLICK and CLICK PLUS Programmable Logic Controllers in real time. View and edit PLC registers, check project information, and manage user accounts with customizable monitor windows.

**Highlights:** Real-time monitoring and control, View and edit PLC registers, Multiple level user accounts, Customizable monitor windows, Access PLC error logs, Check PLC project information

**Features:** macOS Compatibility

**In-app purchases:** none


### SIMATIC Unified Air

[App page](https://appshunter.io/ios/app/simatic-unified-air/id6476095253)

**In-app purchases:** none


## Frequently asked questions

### Is Remote PLC free?

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

### Is SIMATIC Unified Air free?

SIMATIC Unified Air is free to download, with no in-app purchases.

### Do Remote PLC or SIMATIC Unified Air have ads?

Neither Remote PLC nor SIMATIC Unified Air shows ads.

### Which is updated more often, Remote PLC or SIMATIC Unified Air?

Remote PLC ships an update every 5 months, and SIMATIC Unified Air every 12 months. Most recently, Remote PLC was updated on October 12, 2026 and SIMATIC Unified Air on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*