# Modbus Explorer vs LineKeeper

The clearest difference is update cadence: LineKeeper at every 4 days against Modbus Explorer's every 2 weeks. LineKeeper also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Modbus Explorer 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.

Modbus Explorer ships an update every 2 weeks, LineKeeper every 4 days. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Modbus Explorer | LineKeeper |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Size | 5 MB | 19 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HASAN BARAN](https://appshunter.io/developer/6773067753) | [Oleksandr Makarov](https://appshunter.io/developer/6791371576) |

## What reviewers say

### 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 |


### 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 Explorer free?

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

### Is LineKeeper free?

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

### Do Modbus Explorer or LineKeeper have ads?

Neither Modbus Explorer nor LineKeeper shows ads.

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

Modbus Explorer ships an update every 2 weeks, and LineKeeper every 4 days. Most recently, Modbus Explorer was updated on October 5, 2026 and LineKeeper on October 4, 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.*