# TCP ModBus vs Dash IoT

The clearest difference is in-app purchases: TCP ModBus at none against Dash IoT's 7. TCP ModBus also leads on update cadence (every 4 days vs every 2 months) and iOS requirement (8.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Dash IoT sells 7 in-app purchases, starting at $14.49 per month. TCP ModBus asks for nothing beyond the download.

TCP ModBus ships an update every 4 days, Dash IoT every 2 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | TCP ModBus | Dash IoT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Size | 1 MB | 21 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ТПУ](https://appshunter.io/developer/1004522612) | [DashIO Connect](https://appshunter.io/developer/1574116691) |

## What reviewers say

### TCP ModBus

[App page](https://appshunter.io/ios/app/tcp-modbus/id1167945569)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dash IoT

[App page](https://appshunter.io/ios/app/dash-iot/id1574116689)

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gemini 25 | $14.49 | per month |
| Mercury 5 | $24.99 | per year |
| Gemini 50 | $26.90 | per month |
| Gemini 100 | $51.99 | per month |
| Gemini 10 | $58.00 | per year |
| Mercury 15 | $68.00 | per year |
| Gemini 25 | $134.99 | per year |


## Frequently asked questions

### Is TCP ModBus free?

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

### Is Dash IoT free?

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

### Do TCP ModBus or Dash IoT have ads?

Neither TCP ModBus nor Dash IoT shows ads.

### Which is updated more often, TCP ModBus or Dash IoT?

TCP ModBus ships an update every 4 days, and Dash IoT every 2 months. Most recently, TCP ModBus was updated on October 13, 2026 and Dash IoT on October 2, 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.*