Comparison

Unified vs PLC Ninja

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Unified

Features
Read full description

This app allows hosting different HMIs to monitor and control a plant or machine. You can create the HMIs with the Unified-E App Designer and publish them on the Unified-E App Manager. Unified-E is a software product which is used to operate machines or plants with a smartphone. App development time is drastically reduced by using the "Unified-E App Designer" software, where you can define both the HMI views and push notifications for your individual HMI app. No app programming knowledge is required. There is a Gateway PC required which connects smartphone with machine and ensures that communication is secured and only granted for authorized users. The "Pro" license also allows operating a machine via the Internet without performing any configuration on the firewall or router. By now there are already multiple Unified-E endpoint adapters, e. g. for the S7-, ControlLogix-, Modbus- or OPC UA interface. The software, user manuals, licenses and further information can be found on the website ww.unified-e.com. For developers and integrators all licenses are for free.

About

PLC Ninja

Access live PLC data directly from your mobile device. Connect via Ethernet, Wi-Fi, or serial adapter to monitor inputs, outputs, timers, counters, and analog values in real-time while in the field.

Highlights
  • Real-time PLC data monitoring
  • Ethernet, Wi-Fi, and serial connection support
  • View inputs and outputs
  • Monitor timers and counters
  • Access analog values
Features
Read full description

PLC Ninja puts live PLC data on your phone. Connect over Ethernet, Wi-Fi, or a serial adapter, and see every input, output, timer, counter and analog value updating in real time — standing at the panel, not walking back to the office. PLC Ninja is an independent product and is not affiliated with, endorsed by, or sponsored by Rockwell Automation, Siemens AG, AutomationDirect, or Mitsubishi Electric. Allen-Bradley, ControlLogix, CompactLogix, GuardLogix, MicroLogix, SLC 500, RSLogix and Studio 5000 are trademarks of Rockwell Automation. SIMATIC, S7 and LOGO! are trademarks of Siemens AG. DirectLOGIC is a trademark of AutomationDirect. MELSEC and FX are trademarks of Mitsubishi Electric. All product names are used only to identify the equipment this app can connect to. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://plcninja-support.github.io/support/privacy.html

Screenshots

Unified1 screens
PLC Ninja4 screens

Verdict

The call

The clearest difference is in-app purchases: Unified at none against PLC Ninja's 6. Unified also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.6). On price, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PLC Ninja sells 6 in-app purchases, starting at $3.99 per month. Unified asks for nothing beyond the download.

UpkeepUpdate frequency

Unified ships an update every 4 weeks, PLC Ninja every 3 weeks. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
Unified versus PLC Ninja: the parameters behind the verdict, then further details
ParameterUnifiedPLC Ninja
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 4 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.6
Further details — not scored
Size189 MB10 MB
Age rating4+4+
DeveloperUnified-E AGSHAOHUA YI

In-app purchases

None

Unified

No in-app purchases

6 purchases

PLC Ninja

Subscriptions6
  • Standard$3.991 Month
  • Professional$8.991 Month
  • Ultimate$14.991 Month
Show 3 more
  • Standard$39.991 Year
  • Professional$89.991 Year
  • Ultimate$149.991 Year

Questions

Is Unified free?
Unified is free to download, with no in-app purchases.
Is PLC Ninja free?
PLC Ninja is free to download, with in-app purchases available.
Do Unified or PLC Ninja have ads?
Neither Unified nor PLC Ninja shows ads.
Which is updated more often, Unified or PLC Ninja?
Unified ships an update every 4 weeks, and PLC Ninja every 3 weeks. Most recently, Unified was updated on October 17, 2026 and PLC Ninja on October 5, 2026.

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