# OPTISONIC 6300 P vs Modbus TCP Station

The clearest difference is in-app purchases: OPTISONIC 6300 P at none against Modbus TCP Station's 2. OPTISONIC 6300 P also leads on ads (none vs shown). Modbus TCP Station's advantage is update cadence (every 10 days vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Modbus TCP Station sells 2 one-off in-app purchases. OPTISONIC 6300 P asks for nothing beyond the download.

OPTISONIC 6300 P ships an update every 5 months, Modbus TCP Station every 10 days. The most recent releases landed on October 30, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | OPTISONIC 6300 P | Modbus TCP Station |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 10 days** |
| Size | 42 MB | 31 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KROHNE Messtechnik GmbH](https://appshunter.io/developer/1445655816) | [DONGSOO LEE](https://appshunter.io/developer/1868670088) |

## What reviewers say

### OPTISONIC 6300 P

[App page](https://appshunter.io/ios/app/optisonic-6300-p/id6723896425)

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

**In-app purchases:** none


### Modbus TCP Station

[App page](https://appshunter.io/ios/app/modbus-tcp-station/id6757790321)

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Month Premium Pass | $0.99 | one-time |
| Premium Upgrade | $9.99 | one-time |


## Frequently asked questions

### Is OPTISONIC 6300 P free?

OPTISONIC 6300 P is free to download, with no in-app purchases.

### Is Modbus TCP Station free?

Modbus TCP Station is free to download, with in-app purchases available.

### Do OPTISONIC 6300 P or Modbus TCP Station have ads?

Modbus TCP Station shows ads; OPTISONIC 6300 P does not.

### Which is updated more often, OPTISONIC 6300 P or Modbus TCP Station?

OPTISONIC 6300 P ships an update every 5 months, and Modbus TCP Station every 10 days. Most recently, OPTISONIC 6300 P was updated on October 30, 2026 and Modbus TCP Station on November 2, 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.*