# LineKeeper vs S7 PLC HMI

The clearest difference is update cadence: S7 PLC HMI at every 5 days against LineKeeper's monthly. LineKeeper's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. LineKeeper sells 1 one-off in-app purchase and S7 PLC HMI sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

LineKeeper ships an update monthly, S7 PLC HMI every 5 days. The most recent releases landed on October 21, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | LineKeeper | S7 PLC HMI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Size | 22 MB | 15 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Oleksandr Makarov](https://appshunter.io/developer/6791371576) | [JIRI NOVOTNY](https://appshunter.io/developer/6801989591) |

## What reviewers say

### LineKeeper

[App page](https://appshunter.io/ios/app/linekeeper/id6791371574)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Write Unlock | $59.99 | one-time |


### 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 LineKeeper free?

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

### Is S7 PLC HMI free?

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

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

Neither LineKeeper nor S7 PLC HMI shows ads.

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

LineKeeper ships an update monthly, and S7 PLC HMI every 5 days. Most recently, LineKeeper was updated on October 21, 2026 and S7 PLC HMI on October 29, 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.*