Can I control all my smart home devices from one app?

Largely, yes, if your devices are Matter-certified. Matter devices appear natively in the Alexa, Google Home, Apple Home and SmartThings apps with their core functions intact. Cameras and robot vacuums are the main exceptions, where advanced features such as detection zones or map editing usually stay in the manufacturer app.

Do smart home apps work when the internet is down?

It depends on the platform and the device. Apple Home with a hub, SmartThings for local-capable devices, and Home Assistant all continue working on the local network. The Alexa and Google Home apps are largely cloud-dependent, so most control and automations stop until the connection returns. Devices with local control, such as Shelly and Zigbee gear on a local hub, keep responding to physical switches regardless.

Is Home Assistant worth using instead of a manufacturer app?

If you have more than about twenty devices, care about local control, or want automations more complex than a platform rule builder allows, it is a substantial upgrade. The tradeoff is real maintenance — updates, integrations that occasionally break, and an initial setup measured in hours rather than minutes.

Smart Home Apps: What Actually Controls Your Devices in 2026

Smart home apps are where the promise usually breaks down. You buy six devices and end up with six apps, each with its own account, notification style and idea of what a schedule is. In 2026 the fix is consolidation: a Matter-certified device can be controlled entirely from one app of your choosing, leaving the manufacturer app for firmware updates only. This guide covers the main control apps and the devices that consolidate cleanly into them.

The three kinds of smart home app

Platform apps — Alexa, Google Home, Apple Home, SmartThings — aim to control everything and are where your automations should live; our smart home platform guide compares them in depth. Manufacturer apps, like the Aqara, Eufy or Govee apps, expose brand-specific features that the platform apps cannot represent, such as detailed camera detection zones or robot vacuum map editing. Finally there are enthusiast dashboards, most notably Home Assistant, which give you complete control at the cost of setup effort. The rule of thumb for 2026: use one platform app for daily control and automations, keep manufacturer apps installed for initial setup and firmware, and avoid buying anything that only works in its own app. Wall panels and smart home displays put the same app in front of the whole household.

How to choose your primary app

Pick your primary app before you pick your next device, then check the box for that platform's logo. Apple Home is the cleanest interface and the best at grouping by room, but it shows the least device detail. Google Home has improved considerably and handles voice best. The Alexa app has the most features and the busiest interface. SmartThings has the strongest automation editor of the four. Whichever you choose, prefer devices with Matter certification so they surface fully in that app — the Ecobee Smart Thermostat Premium review is a good example of a device that works fully in all four. Be sceptical of any product whose key features exist only in a proprietary app: cameras and robot vacuums are the two categories where that is unavoidable, and everything else it is not.