IOmeter is a Berlin company whose reader clips onto the infrared port of a digital electricity meter and reports consumption and feed-in. The data is viewed in the IOmeter app and can be passed on to Home Assistant, Homey, evcc and similar energy tools.
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IOmeter has two parts: a Core that sits on the meter and runs on battery or USB-C, and a Bridge that joins the home Wi-Fi. Home Assistant and Homey read the Bridge over the local network, and evcc is configured with the Bridge's IP address, so live data does not depend on a vendor cloud for those integrations.
That suits people who want live grid import and export for solar, wallbox or battery control. It is weaker for voice assistants and for Apple Home, Google Home or Matter, where we found no support, and the app listings we found are iPhone only.
Source: IOmeter app listing (App Store)
The main app. It shows consumption in kWh and euros in real time, supports one-way and two-way meters, single and dual tariffs, advance-payment reminders and Excel or CSV export. Published by IOmeter GmbH, Berlin. The listing says local data transfer needs IOmeter hardware with firmware 62 or 69.
A companion energy-management app from the same developer. It shows consumption and feed-in, links several IOmeter units and supports dynamic tariffs including EPEX spot prices for smart charging. The listing names compatibility with many EVs, wallboxes, smart plugs, heat pumps and inverters. A user review mentions a trial followed by a monthly fee, which we could not confirm on IOmeter's side.
Official supported by the brand Community built by someone else Not found searched, nothing found Unconfirmed sources conflict or could not be opened
| Platform | Status | What it means | Sources |
|---|---|---|---|
| Connection | |||
| Wi-Fi | Yes | The Bridge connects to the router over Wi-Fi, and Home Assistant lists the Bridge's Wi-Fi signal strength as a sensor. Homey's partner page says the Bridge can be up to 50 metres from the Core. | Home Assistant IOmeter Homey Works with IOmeter |
| Core to meter and Bridge | Yes | The Core attaches to the meter's infrared port and runs on battery or USB-C. The Homey listing describes the Core as not needing Wi-Fi where the meter sits, with the Bridge relaying its data. We could not confirm the radio used between Core and Bridge. | Homey Works with IOmeter IOmeter Homey app |
| Bluetooth, Zigbee, Z-Wave, Thread | Not mentioned | None of these are mentioned on the IOmeter app listings, Home Assistant page or Homey pages we read. | Home Assistant IOmeter |
| Matter | Not found | No Matter support found on IOmeter's app listings, the Home Assistant page or the Homey pages we read. | Searched, no source |
| Voice assistants and ecosystems | |||
| Google Home | Not found | No integration found in the app listings, Homey pages or Home Assistant page we read. | Searched, no source |
| Amazon Alexa | Not found | No Alexa skill or mention found in the same sources. | Searched, no source |
| Apple Home | Not found | No HomeKit or Apple Home support found in the sources we read. | Searched, no source |
| Dynamic tariffs (EPEX, Tibber) | Not mentioned | IOmeter Plus supports dynamic tariffs including EPEX spot prices. Tibber is not named on that listing, and we found no Tibber-specific integration. | IOmeter Plus listing |
| Open platforms and developer access | |||
| Home Assistant | Yes | Built-in integration, added in Home Assistant 2025.3 and maintained by the Home Assistant project rather than IOmeter. It is local, can discover the device automatically and exposes power, import, export and tariff energy plus battery and signal status. Core and Bridge need firmware 62/69 or newer. | Home Assistant IOmeter |
| Homey | Official | The Homey app is published by IOmeter GmbH, not Athom, and the listing shows Homey Cloud, Pro, Pro mini and Self-Hosted Server. The same listing says Homey Bridge is required, which we could not square with the Cloud entry. It communicates locally and gives flow triggers for power and battery changes. | IOmeter Homey app Homey Works with IOmeter |
| evcc | Yes | evcc's own documentation has an IOmeter meter template that needs only the Bridge IP address and is used as a grid meter. It is maintained by the evcc project. IOmeter's App Store listing also names EVCC. | evcc IOmeter template IOmeter app listing |
| Local API | Unconfirmed | An HTTP interface on the Bridge exists, with polling and Server-Sent Events, used by the Home Assistant integration and a Python library whose maintainer has an iometer.de address. We could not open IOmeter's own API documentation, so its scope and official status are unconfirmed. | iometer Python library Home Assistant IOmeter |
| MQTT | Unconfirmed | We found no IOmeter statement about MQTT. The ioBroker thread we read also makes no MQTT claim. | Searched, no source |
| ioBroker | Community | No dedicated adapter in the thread we read. Users poll the Bridge's HTTP interface with a script or the Parser adapter. | ioBroker forum thread |
| Node-RED | Not found | No dedicated node found. The HTTP interface could be polled, but we found no published flow. | Searched, no source |
| openHAB | Not found | No binding found in our searches. | Searched, no source |
| Samsung SmartThings | Not found | No integration found. | Searched, no source |
| Hubitat | Not found | No driver found. | Searched, no source |
| Domoticz | Not found | No plugin found. | Searched, no source |
| Control4 | Not found | No integration found. | Searched, no source |
| IFTTT | Not found | No IOmeter service found in our searches. | Searched, no source |
| Philips Hue | Not found | No integration found. | Searched, no source |
Checked 11 November 2026 against the brand's own pages, app store listings and each project's own page. “Not found” means we searched and found nothing, not that it is impossible. Compatibility changes often. Spot an error? Tell us and we will fix it.
Not that we could find. No Matter support found on IOmeter's app listings, the Home Assistant page or the Homey pages we read.
Not that we could find. No Alexa skill or mention found in the same sources.
Not that we could find. No integration found in the app listings, Homey pages or Home Assistant page we read.
Not that we could find. No HomeKit or Apple Home support found in the sources we read.
Yes. Built-in integration, added in Home Assistant 2025.3 and maintained by the Home Assistant project rather than IOmeter. It is local, can discover the device automatically and exposes power, import, export and tariff energy plus battery and signal status. Core and Bridge need firmware 62/69 or newer.
Not that we could find. No integration found.
Yes, officially. The Homey app is published by IOmeter GmbH, not Athom, and the listing shows Homey Cloud, Pro, Pro mini and Self-Hosted Server. The same listing says Homey Bridge is required, which we could not square with the Cloud entry. It communicates locally and gives flow triggers for power and battery changes.
Not that we could find. No driver found.
Answers come from the sourced table above. See how IOmeter compares with all brands on the smart home brand statistics page.
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