# Modbus TCP Tools vs LineKeeper

Modbus TCP Tools and LineKeeper are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | Modbus TCP Tools | LineKeeper |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Size | 31 MB | 22 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BITAJON SYSTEMS LTDA](https://appshunter.io/developer/1896653646) | [Oleksandr Makarov](https://appshunter.io/developer/6791371576) |

## What reviewers say

### Modbus TCP Tools

[App page](https://appshunter.io/ios/app/modbus-tcp-tools/id6786831533)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Modbus TCP Tool | $9.99 | one-time |


### 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 |


## Frequently asked questions

### Is Modbus TCP Tools free?

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

### Is LineKeeper free?

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

### Do Modbus TCP Tools or LineKeeper have ads?

Neither Modbus TCP Tools 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.*