# PLC vs Modbus Explorer

The clearest difference is in-app purchases: PLC at none against Modbus Explorer's 1. PLC also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Modbus Explorer sells 1 one-off in-app purchase. PLC asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | PLC | Modbus Explorer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 4 MB | 5 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [spiritdev Softwareentwicklung GmbH](https://appshunter.io/developer/1530950669) | [HASAN BARAN](https://appshunter.io/developer/6773067753) |

## What reviewers say

### PLC

[App page](https://appshunter.io/ios/app/plc-inspector/id6756433005)

**Features:** Vision Pro support

**In-app purchases:** none


### Modbus Explorer

[App page](https://appshunter.io/ios/app/modbus-explorer/id6778095956)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Modbus Explorer Pro | $14.99 | one-time |


## Frequently asked questions

### Is PLC free?

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

### Is Modbus Explorer free?

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

### Do PLC or Modbus Explorer have ads?

Neither PLC nor Modbus Explorer shows ads.

### Which is updated more often, PLC or Modbus Explorer?

PLC ships an update every 2 weeks, and Modbus Explorer every 2 weeks. Most recently, PLC was updated on October 6, 2026 and Modbus Explorer on October 5, 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.*