Remote PLC vs SIMATIC Unified Air
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Remote PLC
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.
- 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
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Remote PLC is an application for real time monitoring and control for the CLICK and CLICK PLUS Programmable Control product lines offered by Automationdirect.com. For this app to function as designed, a CLICK PLC with ethernet or Bluetooth support is required. The Remote PLC app offers a quick method of connecting to a PLC to view and edit values in the PLC registers, as well as check the PLC project information, including the Error logs. Main Features: -Multiple Level User Accounts. Once connected, the authorized users can view and edit Monitor Windows based on their permission levels setup in the project file. -Custom Monitor windows can be created and stored to the PLC using the CLICK Programming software version 3.60 or later. Monitor Window access can be based on the user permissions. - Monitor and edit designated discrete and integer values within the PLC. Timer / Counter values can easily be viewed and edited. - PLC type and status, such as PLC Error Logs, scan times (Min and Max), as well as Project file information. Requirements: • All current CLICK and CLICK PLUS PLCs with ethernet/Bluetooth support the Remote PLC app. • The PLC must be using firmware Version 3.60 or later. • CLICK Programming Software Version 3.60 or later is required to program and configure the PLC to support the Remote PLC App. • The CPU must have compatible network settings with the device running the Remote PLC App.
SIMATIC Unified Air
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SIMATIC Unified Air 3.0 introduces Access Key Authentication, redefining secure and flexible access to SIMATIC HMI Unified Comfort Panels for modern industrial service scenarios. Secure access without accounts or passwords Access Key Authentication enables temporary, time-limited access to panels without creating user accounts, registering mobile devices, or sharing passwords. Engineers generate cryptographically signed Access Keys that grant precisely defined access and expire automatically. Built for service and maintenance Unified Air 3.0 is designed for environments with external technicians, contractors, and rotating service teams. Access is delivered quickly, securely, and entirely offline via Bluetooth. Key features • Token-based Access Key authentication • No UMC user accounts required for service staff • No mobile device pre-registration at the panel • Time-limited access with automatic expiration • Role-based authorization using existing UMC alias roles • Seamless authentication via Bluetooth • No cloud dependency, no central server required Simple workflow Engineers configure roles in TIA Portal, generate Access Keys, and securely share them with technicians. Technicians import the key into Unified Air and authenticate silently to nearby panels. Included Unified Air capabilities • Device information • Screenshot capture • Report generation Compatibility Access Key Authentication is supported on SIMATIC HMI Unified Comfort Panels with V21 Update 1. SIMATIC Unified Air 3.0 brings controlled access where flexibility, security, and reliability matter most.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 16, 2026 respectively.
| Parameter | Remote PLC | SIMATIC Unified Air |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.1 | 14.0 — better |
| Further details — not scored | ||
| Size | 92 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Automationdirect.com | Siemens AG |
In-app purchases
Remote PLC
No in-app purchases
SIMATIC Unified Air
No in-app purchases
Questions
Is Remote PLC free?
Is SIMATIC Unified Air free?
Do Remote PLC or SIMATIC Unified Air have ads?
Which is updated more often, Remote PLC or SIMATIC Unified Air?
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