# ELX TCP Client vs Modbus TCP Pro

The clearest difference is price: ELX TCP Client at Free against Modbus TCP Pro's $11.99. ELX TCP Client 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 27 months). On review sentiment, ads, monetization model and device support there is nothing between them.

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

ELX TCP Client ships an update every 27 months, Modbus TCP Pro every 5 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ELX TCP Client | Modbus TCP Pro |
| --- | --- | --- |
| Price | **Free** | $11.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/elx-tcp-client/id1624088498/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 2 MB |
| Requires iOS | **15.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Abaev](https://appshunter.io/developer/1463867299) | [Bernard Struelens](https://appshunter.io/developer/1802500832) |

## What reviewers say

### ELX TCP Client

[App page](https://appshunter.io/ios/app/elx-tcp-client/id1624088498)

Connect to TCP servers using IP addresses or domain names. View data in both string and hexadecimal formats. This tool is ideal for testing TCP connections.

**Highlights:** Connect to TCP servers, Supports IP addresses, Supports domains, Display data in string format, Display data in HEX format, Test TCP connections

**Features:** macOS Compatibility

**In-app purchases:** none


### Modbus TCP Pro

[App page](https://appshunter.io/ios/app/modbus-tcp-pro/id6756293575)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Modbus Pro | $24.99 | one-time |


## Frequently asked questions

### Is ELX TCP Client free?

ELX TCP Client 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 ELX TCP Client or Modbus TCP Pro have ads?

Neither ELX TCP Client nor Modbus TCP Pro shows ads.

### Which is updated more often, ELX TCP Client or Modbus TCP Pro?

ELX TCP Client ships an update every 27 months, and Modbus TCP Pro every 5 weeks. Most recently, ELX TCP Client was updated on October 27, 2026 and Modbus TCP Pro on October 25, 2026.

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