Comparison

HMI Editor vs ezModbus

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

Head to head
About

HMI Editor

Create custom interfaces for real-time industrial process monitoring and control on iOS devices. Design dynamic dashboards with various elements and connect them to PLC systems. Develop and test projects freely, with payment only for deployment.

Highlights
  • Customizable page layouts
  • Real-time monitoring and control
  • Support for major PLC brands
  • On-screen project editing
  • Export/import asset files
  • Cloud storage and deployment
Features
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HMI Editor is a *native* iOS application for creating Human Machine Interfaces for real-time monitoring and control of industrial PLC based systems and processes. Data is presented in highly customizable page layouts much like a presentations app. Who's this for. The app is aimed at automation engineers or industrial machine manufacturers on many sectors including but not limited to building automation, industrial processing, power plants, water plants, industrial equipment, transportation and so on, who want to provide instant, reliable access to real-time data right from iOS devices. What you'll get for the price of the app. HMI Editor allows you to create efficient, advanced, highly responsive "Human Machine Interfaces" right on your iPad screen with unprecedented ease of use and fun. The HMI Editor app is fully native and supports all major Programmable Logic Controller (PLC) brands. For the price of the app (FREE) you can *fully* develop and test projects of any complexity. No restrictions on number of pages, tags or PLCs are applied at this stage. You only pay for project activations when you are ready to deploy to end users. HMI Editor essential Features. - Very fast, launches and connects immediately regardless of project size. - All data types including Strings, Arrays and Dictionaries fully supported. - HMI Projects are edited on-screen as you run and monitor your process. - You can export and edit your project files as text on your PC or Mac. - Export/import asset files such as images, pdfs or audio files from HMI Editor to your PC or Mac. - Optional project storage in the cloud and easy deployment to end users devices. - Native PLC communication protocols. Connections are performed with no intermediate servers or boxes. - Major PLC brands supported, including: Allen Bradley, Mitsubishi, Omron, Opto 22, Schneider Electric, Siemens, Wago. - TCP/IP based security. Getting Started: creating a HMI Editor project. Projects are created like a mix of PowerPoint and Excel. The concept is quite simple. You lay out elements such as Sliders, Switches, Buttons, Images, Text Fields, Knobs, Trends, Gauges, Bar Indicators, Web browser, Array pickers, even Gesture Recognizers and much more onto pages. You connect on-screen objects with iPad sensors and PLC tags through simple links or powerful expressions. That's it !!. The result is a stunning, dynamic, real-time presentation of your PLC controlled process as you'd never imagined. Examples Ready for You. Explore the examples and take the liberty to make changes on them. Create your own test projects from scratch or based on the examples. HMI Editor will comprehensively tell you what inconsistencies or problems there may be in your project as you build them. New examples are being added on a regular basis or by user request. What's Next. There’s a lot more that we haven’t mentioned here, such as the page navigation interface, the embedded file server, the model browser, the model seeker, the automatic expression completer, the inspector viewer, alarm notifications, iPad sensors, barcode scanner, user access levels, password on launch, PLC validation codes, individual tag diagnostics, background processing, automatic network switching, and much much more. You surely will identify some of these features by just exploring the app, but the single source where everything is covered is the HMI Editor Reference Manual. Feel free to download it from our site and look at the full possibilities, you’ll love the product. Technical Support. We provide a free online support service based on public forums on our website: http://www.sweetwilliamsl.com/support/forums Or through direct email: support@ritecontrol.com. We also hold a public YouTube​ channel at: http://www.youtube.com/hmipad. Feel free to direct your questions, suggestions or feedback to any of the above. We'll be happy to hear from you.

About

ezModbus

Features
Currently charting
Read full description

Connect to industrial devices quickly and easily over direct WiFi communication (no middleware, no Internet needed). Fast and easy access to any Modbus devices. All setup is done and permanently saved on the phone for anytime immediate access. Add mobile connectivity quickly, easily and inexpensively yourself at any time. Ezmodbus is an easy to use Modbus app that lets you setup and save devices directly on your phone. Set up the device and the register map for text display directly on your phone and save the device and register map right on the phone for immediate and later use. All setup is permanently saved on the phone for convenient access at any time. Multiple options are provided to create the register maps for quick setup of multiple copies of the same or quick modification of similar devices. All setup is done right on the phone, no internet connection, downloads, or other apps are needed. Technical Specifications Modbus® Supported functions: Read Coil Read Analog Inputs Read Holding Registers Read Discrete Inputs Read multiple registers supported for long integers and floats. Data Formats supported: Unsigned Integer 16 bit Unsigned Integer 32 bit Signed Integer 16 bit Signed Integer 32 bit Float 32 bit (IEEE-754 floating point) Float 64 bit (IEEE-754 floating point) 32-bit ‘Modulus-10000’ Format (Schneider Electric ION) Unsigned char (8 bit), Most Significant Byte and Least Significant Byte Signed char (8 bit), Most Significant Byte and Least Significant Byte

Screenshots

HMI Editor4 screens
ezModbus4 screens

Verdict

The call

The clearest difference is price: HMI Editor at Free against ezModbus's $4.99. HMI Editor also leads on update cadence (every 2 months vs every 41 months) and device support (4 vs 2). ezModbus's advantage is in-app purchases (none vs 3) and chart position (#125 vs unranked). On 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

HMI Editor is free to download; ezModbus costs $4.99 up front. HMI Editor sells 3 one-off in-app purchases. ezModbus asks for nothing beyond the download.

UpkeepUpdate frequency

HMI Editor ships an update every 2 months, ezModbus every 41 months. The most recent releases landed on September 14, 2026 and October 13, 2026 respectively.

Scorecard6 real differences · 5 level
HMI Editor versus ezModbus: the parameters behind the verdict, then further details
ParameterHMI EditorezModbus
PriceFree — better$4.99
Rating4.7 (10 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings10 — better—
Update frequencyEvery 2 months — betterEvery 41 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank—#125 — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size23 MB2 MB
Age rating4+4+
DeveloperGreg MaendelBitmakers LLC

In-app purchases

3 purchases

HMI Editor

One-time3
  • Activation for One Use$199.99
  • Activation for Five Uses$599.99
  • Activation for Ten Uses$999.99
None

ezModbus

No in-app purchases

Questions

Is HMI Editor free?
HMI Editor is free to download, with in-app purchases available.
Is ezModbus free?
ezModbus costs $4.99, with no in-app purchases.
Do HMI Editor or ezModbus have ads?
Neither HMI Editor nor ezModbus shows ads.
Which is updated more often, HMI Editor or ezModbus?
HMI Editor ships an update every 2 months, and ezModbus every 41 months. Most recently, HMI Editor was updated on September 14, 2026 and ezModbus on October 13, 2026.

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