# Modbus Connect vs LineKeeper

The clearest difference is in-app purchases: Modbus Connect at none against LineKeeper's 1. LineKeeper's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | Modbus Connect | LineKeeper |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 3 MB | 19 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rodolfo Fuentes](https://appshunter.io/developer/1896346895) | [Oleksandr Makarov](https://appshunter.io/developer/6791371576) |

## What reviewers say

### Modbus Connect

[App page](https://appshunter.io/ios/app/modbus-connect/id6767015416)

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

**In-app purchases:** none


### LineKeeper

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

**Features:** macOS Compatibility

**In-app purchases (1)**

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


## Frequently asked questions

### Is Modbus Connect free?

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

### Is LineKeeper free?

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

### Do Modbus Connect or LineKeeper have ads?

Neither Modbus Connect nor LineKeeper 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.*