# IoT OnOff — Monitor, your IoT projects

> Monitor and control Internet of Things (IoT) projects with configurable widgets and MQTT support. (iPhone/iPad app by Kris Van Hoye.)

- Source: https://appshunter.io/ios/app/iot-onoff/id1267226555 (this page in markdown: same URL + `.md`)
- Developer: [Kris Van Hoye](https://appshunter.io/developer/1267226554)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 3.50/5 from 14 App Store ratings · 66 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 19 MB
- Languages: American English
- Released: 2017-09-25
- Data updated: 2026-06-19
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/iot-onoff/id1267226555/reviews.md

## What is IoT OnOff?

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!

## Key features

- Interactive widgets for IoT data
- In-app configuration
- JSON formatted MQTT message handling
- Customizable themes
- Multiple dashboards
- Auto reconnect to MQTT broker
- Topic builder with autocomplete

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium edition | $2.99 | one-time |
| JSON parser | $2.99 | one-time |
| Storage Manager | $2.99 | one-time |


## Recent user reviews (10 of 66)

All indexed reviews: https://appshunter.io/ios/app/iot-onoff/id1267226555/reviews.md

### 1/5 — Não funciona com versão 18.5

*2025-10-21, version 4.0.2*

Ruim. Os ícones às vezes funcionam, na maioria das vezes não. Instável. Testei num outro celular antigo com outro ios antigo e foi bem.

### 1/5 — No longer seems to work in iOS18

*2025-08-21, version 4.0.2*

Trying to setup again on a new iPhone 14, and it just either does not respond to screen clicks like Add or Back etc. 
can add a group name on first page, but no way to save it or add items.
I have the extra ‘Storage Manager’ but it does not see saved configs, even with correct ‘Share’ code entered.

### 3/5 — Excellent, if not using an iPhone 16

*2025-06-24, version 4.0.2*

Hands down one of the better apps for MQTT dashboards. However, after an upgrade from iPhone 7 to 16, I find it is near impossible to navigate within the app anymore. Various icons for navigation do not respond to touch.

### 2/5 — Poor support for an iPhone 14+

*2024-04-03, version 4.0.2*

Pity, had promise but has an interface that: 1) forces iPhone 14+ users to keep tapping around commands until luck is on their side to execute them; and 2) leaves iPhone 14+ users to wonder what’s displayed under the island the app clearly knows nothing about. Very frustrating. Too bad.

### 5/5 — IOT On/Off

*2024-02-17, version 4.0.2*

It took some effort on my part to get the code to compile for Arduino using MQTT.  But can confirm this App works nicely using MQTT to see temperature data. The widgets are clean looking and clearly show the data.

### 1/5 — Restore data not work

*2023-11-03, version 4.0.2*

All of app it is ok. but the restore data not found after remove and reinstall program. my all mqtt dashboard missing very waste the time for new config.

### 2/5 — Graph widget updated only when app in foreground

*2023-09-27, version 4.0.2*

The graph widgets cannot handle an array of values or updated while the app is in background. In this way it is not possible to see, for example, the history of the temperature of a room.

### 2/5 — Difficult to tap

*2023-09-17, version 4.0.2*

Menu buttons too close to corners, really hard to tap on Iphone 14. Using this app is really frustrating experience. GUI definitely needs redesigning.

### 3/5 — Still supported?

*2023-07-13, version 4.0.2*

Is this app still supported? I wrote the author almost three weeks ago and I'm still waiting for an answer. 

I bought the backup feature and I want to know where are the backups stored.

### 1/5 — Is this really functional anymore

*2023-06-28, version 4.0.2*

Looks a lot of work went into it but the UI on a modern iPhone is very frustrating. I have been trying to configure it with a hivemq server and finally seems to be connecting but for the life of me I cannot configure widgets to my topics. The interface & buttons don’t seem to follow standard Apple conventions and can’t find documentation.

## Frequently asked questions about IoT OnOff

### What does the IoT OnOff app do?

This app allows you to monitor and control your Internet of Things (IoT) projects. It provides interactive widgets for presenting your IoT data smoothly and allows for in-app configuration of your projects. You can also handle JSON formatted MQTT messages.

### What are the key features of IoT OnOff?

Key features include a nice set of widgets, in-app configuration, theme support with customization options, auto-reconnect to MQTT brokers, native TCP sockets & WebSockets, client support for topic filters with wildcards, grid layout with rearrange support, multiple dashboards, and high performance. It also optionally supports JSON parsing, backup/restore, and export/import.

### Is IoT OnOff free to use?

The app is free to download and use, and it does not contain any advertising. However, it does offer in-app purchases, which may unlock additional features or functionalities.

### What devices is IoT OnOff compatible with?

The app is designed for mobile devices and can be used to monitor and control IoT projects. It supports MQTT brokers, and you can use two devices to experience the app's speed and functionality.

### How can I use IoT OnOff for my projects?

You can use this app to set up and manage your IoT projects by configuring them directly within the app. It comes with a demo configuration for immediate experience. You can create multiple dashboards, arrange widgets, and use features like the topic builder with autocomplete to interact with your devices.

## Version history (last 5 releases)

### 4.0.2 — 2020-01-21

Hot fix for native tcp socket authentication bug.

### 4.0.1 — 2020-01-15

Hot fix for Device configuration bug.

### 4.0.0 — 2020-01-05

MQTT over native TCP sockets.
New colour picker.
Manage list of MQTT brokers.
Improvements.
Bug fixes.

### 3.05.06 — 2019-08-05

Default value will be UNKNOWN until widget receives first message.
JSON parser has an optional dotNotation setting in case message format is different for receiving and sending data.
During export / import, we have made it more clear that both devices needs same SHARE code.
Some bug fixes and improvements.

### 3.05.05 — 2019-06-29

Export & import improvements.
JSON support for all widgets.
Bug fixes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-19.*