AliExpress boxes say Zigbee, Thread, Matter, HomeKit, Tuya and “Works with Alexa”. Half of these are networks, the other half are apps and standards. Mix them up and you buy a sensor that never works at home. Here is the difference without the marketing.
Quick answer
- You run Home Assistant: build the base on Zigbee (cheap, huge choice, runs locally) and add Matter over Thread where you also want the device in Apple Home.
- You only have an iPhone and Apple Home: buy Matter (ideally over Thread) or devices labelled Works with Apple Home. You need a HomePod mini or Apple TV 4K as the home hub.
- Your household has both iPhone and Android: Matter. One device joins Apple Home, Google Home and Home Assistant at the same time.
What is what
| What it is | What else you need | Strength | Weakness | |
|---|---|---|---|---|
| Zigbee | low-power wireless network | a coordinator (USB stick or network) | biggest choice, low price, batteries last years | every system reads it slightly differently, check compatibility |
| Thread | low-power wireless network based on IP | a Thread border router (HomePod mini, Apple TV 4K, Google Nest Hub, multi-radio coordinator) | the modern network Matter uses | smaller choice, sensitive to interference |
| Matter | a shared device language (not a network), runs over Thread or Wi-Fi | a hub for your system | one device in several apps at once | young standard, not every feature is supported yet |
| HomeKit | Apple’s ecosystem (the Home app) | a HomePod or Apple TV as the hub | easy to use, Siri, privacy | Apple only, smaller choice outside Matter |
Important: Zigbee and Thread both use the same 2.4 GHz band as Wi-Fi. They do not talk to each other and can interfere.
Zigbee: the workhorse for Home Assistant
Zigbee is the most widespread network for sensors, relays, radiator valves and bulbs. Mains-powered devices repeat the network, so the more you have, the more stable it gets. You connect it to Home Assistant through a coordinator. Which one to pick is covered in our guide Zigbee coordinator for Home Assistant.
Be careful with cheap Tuya Zigbee devices: most work with Zigbee2MQTT, but not all. Check the model in the Zigbee2MQTT database before you buy. For products on Werkdom we do that for you.
Thread: a network, not an app
Thread is technically similar to Zigbee but speaks the language of the internet (IP). It controls nothing on its own; it is just the road. Matter or HomeKit travel on it. For Thread to work you need a border router at home: usually a HomePod mini, Apple TV 4K or Google Nest Hub. For Home Assistant it can be a multi-radio coordinator.
Matter: one standard for everyone
Matter is the shared language agreed by Apple, Google, Amazon and Samsung. Its biggest advantage is multi-admin: the same sensor can live in Apple Home, Google Home and Home Assistant at once. Matter runs over Thread (battery sensors) or Wi-Fi (plugs, relays).
HomeKit: if you are all-in on Apple
HomeKit is Apple’s ecosystem and the Home app. Since iOS 16 it also supports Matter, so today it is best to buy Matter devices rather than “HomeKit only”. The upside: they work in Apple Home, and if you ever move to Home Assistant, you take them with you.
What we learned at home
At home we run Home Assistant and Apple Home side by side. This is what we learned:
- Thread and Wi-Fi got in each other’s way. Sensors kept dropping, and the fix was not new hardware but a different Wi-Fi channel. Before buying another router, always check the 2.4 GHz channels first.
- A battery Thread sensor did not rejoin by itself after dropping out, not even right next to the HomePod. Taking the battery out and back in fixed it. There is no way to do that remotely.
- Multi-admin really works. Sensors paired in Apple Home were added to Home Assistant as well and report in both.
- Matter paired directly in Apple Home keeps working when Home Assistant is down. For important things such as the door opener, that is a plus.
- Matter has to be on the same network as Home Assistant. Across a separate network (VLAN) it does not work without extra setup.
- The Matter server needs memory. On an old Raspberry Pi with 1 GB of RAM it crashed. For a new Home Assistant server, get at least 4 GB.
What to buy for your situation
| Situation | Recommendation |
|---|---|
| Home Assistant, lots of cheap sensors | Zigbee coordinator + Zigbee devices |
| Home Assistant and Apple Home in one household | Zigbee in HA, shown in Apple Home via HomeKit Bridge; buy new devices with Matter |
| Apple Home only | Matter over Thread + HomePod mini or Apple TV 4K |
| iPhone and Android in the family | Matter, everyone adds it to their own app |
| Mains plugs and relays | Matter over Wi-Fi or Zigbee, both work locally |
What to watch on AliExpress
- “Matter” vs “Matter via gateway”. Some Tuya devices only do Matter through their own gateway. Look for Matter in the device itself.
- Thread does not work without a border router. If you have no HomePod mini, Apple TV 4K or Nest Hub, add one to the cost.
- Avoid Wi-Fi devices that only work with a cloud app. When the maker switches off the server, they stop working.
- EU version. For switches and relays, check they are made for 230 V and European wall boxes.
Verdict
It is not one against the other. Zigbee is today’s cheapest and most proven base for Home Assistant, Thread is the modern network, Matter is the language that links systems, and HomeKit is the convenient app for Apple users. In practice a mix pays off: Zigbee for lots of sensors and Matter wherever you want a device in more than one app.
Links to shops are affiliate links: if you buy through them, we earn a small commission. Your price stays the same.