# IoT RTU vs FieldBus Toolkit

The clearest difference is in-app purchases: IoT RTU at none against FieldBus Toolkit's 1. IoT RTU also leads on ads (none vs shown) and iOS requirement (8.0 vs 13.0). On price, update cadence and device support there is nothing between them.

Both are free to download. FieldBus Toolkit sells 1 one-off in-app purchase. IoT RTU asks for nothing beyond the download.

IoT RTU ships an update monthly, FieldBus Toolkit every 2 months. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | IoT RTU | FieldBus Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 8 MB | 29 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [朝山 马](https://appshunter.io/developer/596304901) | [DONGSOO LEE](https://appshunter.io/developer/1868670088) |

## What reviewers say

### IoT RTU

[App page](https://appshunter.io/ios/app/iot-rtu/id1268543236)

This app provides remote monitoring and control for industrial M2M and IoT devices. It utilizes cellular networks like GSM, GPRS, 3G, 4G, and NB-IoT for seamless communication.

**Highlights:** Remote monitoring, Industrial M2M control, IoT device management, Cellular network support, GSM, GPRS, 3G, 4G, NB-IoT compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


### FieldBus Toolkit

[App page](https://appshunter.io/ios/app/fieldbus-toolkit/id6758210279)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is IoT RTU free?

IoT RTU is free to download, with no in-app purchases.

### Is FieldBus Toolkit free?

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

### Do IoT RTU or FieldBus Toolkit have ads?

FieldBus Toolkit shows ads; IoT RTU does not.

### Which is updated more often, IoT RTU or FieldBus Toolkit?

IoT RTU ships an update monthly, and FieldBus Toolkit every 2 months. Most recently, IoT RTU was updated on October 12, 2026 and FieldBus Toolkit on October 9, 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.*