Comparison

INCHSTONE OPC Browser vs Modbus TCP Pro

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

Head to head
About

INCHSTONE OPC Browser

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At INCHSTONE, we make working with OPC UA data more convenient. With INCHSTONE OPC Browser, you can explore the OPC UA Information Model, mark favourite datapoints, and transfer them into INCHSTONE's IoT configurator to create user layouts for the INCHSTONE IoT App. The App is available for desktop and mobile devices and can be used for monitoring your OPC UA Servers.

About

Modbus TCP Pro

This tool allows professionals to test, read, and write Modbus registers directly from their iPhone. It offers robust connectivity and support for various data types, making it ideal for field testing and debugging industrial control systems.

Highlights
  • Modbus TCP connectivity
  • Read and write registers
  • Support for multiple data types
  • Configurable Unit ID
  • Instant feedback and error reporting
  • Designed for testing and debugging
  • Field testing without a laptop
Features
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Modbus Reader & Writer is a powerful and intuitive Modbus TCP tool designed for professionals. Built for installers, HVAC technicians, engineers, and system integrators who need a fast and reliable way to test, read, and write Modbus registers directly from their iPhone. Whether you work with heat pumps, PLCs, energy meters, or industrial controllers, this app gives you full control over Modbus TCP devices — anytime, anywhere. Key Features • Modbus TCP Connectivity • Connect to any Modbus TCP device using IP address and port • Configurable Unit ID (slave ID) • Read Registers • Holding Registers (Function Code 03) • Input Registers (Function Code 04) • Support for multiple data types and values • Write Registers • Write Single Register • Write Multiple Registers • Instant feedback and clear error reporting • Designed for Testing & Debugging • Ideal for commissioning and troubleshooting • Perfect for field testing without a laptop • Compatible with Modbus simulators and test environments (e.g. Node-RED) Who Is This App For? • HVAC installers and service technicians • Industrial automation and PLC engineers • Energy and building management professionals • System integrators and commissioning engineers • Developers testing Modbus-based systems Reliable & Efficient • Fast and stable connections • Clear and actionable error messages • Clean, focused interface — no unnecessary complexity • Optimized for real-world professional use Modbus Reader & Writer is your mobile Modbus toolbox — ready for every installation, test, and service intervention.

Screenshots

INCHSTONE OPC Browser4 screens
Modbus TCP Pro4 screens

Verdict

The call

The clearest difference is price: INCHSTONE OPC Browser at Free against Modbus TCP Pro's $11.99. INCHSTONE OPC Browser also leads on in-app purchases (none vs 1) and iOS requirement (15.0 vs 26.1). Modbus TCP Pro's advantage is update cadence (every 5 weeks vs every 3 months). On ads 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

CostPrice · In-app purchases · Ads · Monetization

INCHSTONE OPC Browser is free to download; Modbus TCP Pro costs $11.99 up front. Modbus TCP Pro sells 1 one-off in-app purchase. INCHSTONE OPC Browser asks for nothing beyond the download.

UpkeepUpdate frequency

INCHSTONE OPC Browser ships an update every 3 months, Modbus TCP Pro every 5 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 4 level
INCHSTONE OPC Browser versus Modbus TCP Pro: the parameters behind the verdict, then further details
ParameterINCHSTONE OPC BrowserModbus TCP Pro
PriceFree — better$11.99
Positive reviews—100.0% of reviews
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.1
Further details — not scored
Size126 MB2 MB
Age rating4+4+
DeveloperINCHSTONE GmbHBernard Struelens

In-app purchases

None

INCHSTONE OPC Browser

No in-app purchases

1 purchases

Modbus TCP Pro

One-time1
  • Modbus Pro$24.99

Questions

Is INCHSTONE OPC Browser free?
INCHSTONE OPC Browser is free to download, with no in-app purchases.
Is Modbus TCP Pro free?
Modbus TCP Pro costs $11.99, and also offers in-app purchases.
Do INCHSTONE OPC Browser or Modbus TCP Pro have ads?
Neither INCHSTONE OPC Browser nor Modbus TCP Pro shows ads.
Which is updated more often, INCHSTONE OPC Browser or Modbus TCP Pro?
INCHSTONE OPC Browser ships an update every 3 months, and Modbus TCP Pro every 5 weeks. Most recently, INCHSTONE OPC Browser was updated on November 4, 2026 and Modbus TCP Pro on November 5, 2026.

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