# Modbus TCP Pro vs JSON View

The clearest difference is price: JSON View at Free against Modbus TCP Pro's $11.99. JSON View also leads on in-app purchases (none vs 1) and iOS requirement (15.0 vs 26.1). On ads and device support there is nothing between them.

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

## The numbers

| Metric | Modbus TCP Pro | JSON View |
| --- | --- | --- |
| Price | $11.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free | — |
| Size | 2 MB | 61 MB |
| Requires iOS | 26.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bernard Struelens](https://appshunter.io/developer/1802500832) | [Gautam Singh Rathor](https://appshunter.io/developer/1811390362) |

## What reviewers say

### 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 |


### JSON View

[App page](https://appshunter.io/ios/app/json-view-editor-and-formatter/id6762811010)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Modbus TCP Pro free?

Modbus TCP Pro costs $11.99, and also offers in-app purchases.

### Is JSON View free?

JSON View is free to download, with no in-app purchases.

### Do Modbus TCP Pro or JSON View have ads?

Neither Modbus TCP Pro nor JSON View shows ads.

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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.*