# PLC vs S7 PLC HMI

The clearest difference is in-app purchases: PLC at none against S7 PLC HMI's 1. S7 PLC HMI's advantage is update cadence (every 5 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. S7 PLC HMI sells 1 one-off in-app purchase. PLC asks for nothing beyond the download.

PLC ships an update every 2 weeks, S7 PLC HMI every 5 days. The most recent releases landed on October 6, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | PLC | S7 PLC HMI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 4 MB | 15 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [spiritdev Softwareentwicklung GmbH](https://appshunter.io/developer/1530950669) | [JIRI NOVOTNY](https://appshunter.io/developer/6801989591) |

## What reviewers say

### PLC

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

**Features:** Vision Pro support

**In-app purchases:** none


### S7 PLC HMI

[App page](https://appshunter.io/ios/app/s7-plc-hmi/id6801989589)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $5.99 | one-time |


## Frequently asked questions

### Is PLC free?

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

### Is S7 PLC HMI free?

S7 PLC HMI is free to download, with in-app purchases available.

### Do PLC or S7 PLC HMI have ads?

Neither PLC nor S7 PLC HMI shows ads.

### Which is updated more often, PLC or S7 PLC HMI?

PLC ships an update every 2 weeks, and S7 PLC HMI every 5 days. Most recently, PLC was updated on October 6, 2026 and S7 PLC HMI on October 21, 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.*