# IoT OnOff

> Monitor, your IoT projects

Canonical page: [https://chrome-stats.com/d/id1267226555](https://chrome-stats.com/d/id1267226555)

## Overview

- **ID:** `id1267226555`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Kris Van Hoye
- **Category:** Productivity
- **Rating:** 3.50 / 5 (14 ratings)
- **Version:** 4.0.2
- **Last updated:** 2020-01-21
- **First published:** 2017-09-25
- **Size:** 19 MB
- **Data as of:** 2026-09-21
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/iot-onoff/id1267226555)
- **Website:** [http://www.iot-onoff.com](http://www.iot-onoff.com/)
- **Privacy policy:** [http://www.iot-onoff.com](http://www.iot-onoff.com/)

## Description

Monitor and control your Internet Of Things (IoT) projects with this app.

Everything can be configured inside the app. 
The app is preconfigured with a demo configuration so that you experience the simplicity directly after the install. (Tip: use two devices to see and feel the speed of the app.)
Optionally, JSON formatted MQTT messages can be handled.

We designed smart interactive widgets (controls) so your IoT data will be presented nice and smooth.

Under the MQTT broker settings menu we have foreseen a list with public available MQTT brokers. We are not responsible for the availability of these brokers. If the default broker is not active, please select another one of the list or configure your own.

Features:
* Nice set of widgets
* In-app configuration
* Theme support
* Customisable themes, locally and remote
* Auto reconnect to MQTT broker
* Native TCP sockets & WebSockets
* Client support for topic filters with wildcards
* Grid layout with rearrange support
* Multiple dashboards
* High performance
* JSON parser (optionally)
* Backup / restore (optionally)
* Export / import (optionally)
* Export / import single widget from one device to another (optionally)
* Copy and move widgets from one dashboard to another
* Topic builder with autocomplete 
* Manage list of MQTT brokers
* E-mail support
* GDPR compliant

No advertising in the app.

Have fun!

## Rankings

- #324,531 — Overall

## Review summary

IoT OnOff provides solid MQTT data visualization with clean widgets and decent broker support, useful for embedded development. However, recurring issues include notch-related tap targets and general UI usability, limited data graphing for wildcard topics, unreliable MQTT connections, and JSON parsing problems with underscores, plus a lack of documentation. These common complaints limit overall satisfaction despite the strong core features.

### Pros

- Clean-looking widgets that clearly display data
- Works well with MQTT to view temperature data
- Good broker compatibility (e.g., Ubuntu Mosquitto)
- Suitable for embedded development / avoids custom UI (mostly great)

### Cons

- Notch/top-area UI issues with hit targets on iPhone X and later (including XR) and overall small tap targets
- UI is frustrating/hard to configure; lacks documentation and Apple convention adherence
- JSON parsing fails for keys with underscores (e.g., DS\_18B20.Temperature)
- Wildcard\_data on graphs only shows the last point; cannot display multiple metrics
- MQTT connection can be unstable / flaky (status blinking, intermittent connectivity)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1267226555)