How to choose a smart home platform? Mijia, Aqara, Tuya, and Apple—four paths—I only figured it out after helping my neighbors sort them out

last week, Old Sun came knocking on my door carrying something—the second-hand Mijia gateway he bought for fifty yuan a while ago. When he inspected it, I checked its condition. He put the gateway down on my desk: "Bro, I have a question—this gateway belongs to Mijia. When I buy equipment later, will I have to focus on Xiaomi's products?"

Sun's family just upgraded their network last year, replaced the optical modem for free, bought a new router for 129 yuan, and last month got a second-hand robot vacuum and this gateway. They've tasted the benefits, and now they're planning to properly equip their whole house with a smart system. The shopping cart contained nearly a hundred items, ranging from sensors costing 9.9 yuan to whole house sets costing over 2,000 yuan.

question actually gets to the root of the question. My first reaction was, "Right, just buy Mijia," since most of the dozens of devices in my home are Mijia-series and feel comfortable to use. But I held back my words—their situation might not be the best solution for the entire Mi family. So I pulled him to sit down and laid out the four roads one by one.

be clear first: you're not choosing a brand, you're registering the device for household registration

many people think smart home is "one brand with one app," but actually, it's correct: you first choose a platform, then buy the device. The platform is like the household registration book—the device is registered under the same company's app, linkage uses that company's engine, and the voice assistant recognizes that company's password. Mijia, Aqara, and Apple's 'Family' and 'Doodle' are four different household registration books.

Why is

household registration important? Because the pain of switching platforms is on par with moving. I had previously counted the dozens of devices in my home—how many WiFi and gateway versions each occupied, which gateway they were attached to, it all to sort it out. If you really move from one ecosystem to another, it's like reconfiguring every device's network, rewriting all automation, and changing apps on every phone in the household. The first step was wrong, and the rest was all tutoring.

judging if a platform is suitable, I look at three things: who at home uses it (Android or Apple, whether there are elderly or children), what I want to buy (a few switches or whole-house lighting and curtains), and what my budget is. The differences among the four paths are basically derived from these three approaches.

Mijia: Cheap and generous portions, but the trap lies in "knowing everything about you"

Mijia's advantages can be summed up in one sentence: the entire range is ridiculously diverse, and prices are driven to rock bottom. From a 9.9-yuan body sensor to a central gateway costing just a few hundred yuan, one app manages the entire process. In my house, from sockets and light bulbs to litter boxes, most of the dozens are Mijia-branded units. Even the speaker in the living room wasted a Bluetooth gateway function, the thermo-hygrometer disconnected by a wall was the it covered.

three real advantages. First, it's inexpensive entry-level—the body sensor costs only a few dozen yuan each. Buy two to play with first; if they don't work well, you won't lose much. Second, you can use the gateway—speakers can be used, multi-mode gateways can be used, and some routers can also be included, so you don't have to buy it separately. Third, the integration is foolish. In "Homecoming Mode," where the door lock lights up as soon as you turn it on, you can set it up with just a few drags in the Mi Home app, my setup can be copied and used.

pitfalls also need to be clarified. Mijia's integration is mostly in the cloud; once broadband is cut off, voice understanding and remote control are all shut down—my home only managed by adding a central gateway and moving some automation locally to save it. I wrote about whether this investment was worth it, but I won't elaborate here. Also, Mijia focuses on cost-effectiveness, so don't expect much quality: pressing the switch panel produces a plastic bumping sound, and pressing it together with Aqara's makes a noticeable difference.

Aqara: A bit more expensive, bought a Zigbee base and an Apple ticket

Aqara is heading the other way: expensive goods, solid foundations. Their main feature is the Zigbee protocol—the one where all twenty-some sensors in my home are connected to a single gateway without a beat. devices don't use WiFi or take up of router connections, and a single button battery can last a year or two. For the same sensor, Aqara's price is basically two to three times that of Mijia.

What makes

expensive? I've touched a friend's Aqara Zero Flame panel; the buttons have damping, and pressing them produces a deep, confirmed sound. The workmanship really justifies the price difference. But the real value lies in the Apple ticket: by the end of 2025, Aqara will have 15 categories and over 340 models integrated into Apple's "Home" system, with native HomeKit support—meaning it can be added directly within Apple's Home app, without any detours. It is the domestic brand with the deepest ties to Apple.

So if your home is an iPhone family, Aqara almost blindly chooses: either use the entire Aqara Zigbee gateway, or mix the main Mi home with Aqara panels. The Matter protocol has been made a bit shorter in the past two years by the hybrid wall, which will be explained later.

Graffiti: Ridiculously cheap, the cost hidden in the app

the planter on my sister's balcony is a graffiti solution, costing just a few dozen yuan for WiFi. During nearly half a year of business trips, I relied on it to feed the flowers. It works, but every time I open that app, I freeze for a moment—the interface looks like a product of the previous era, with a splash screen with ad slots. Tuya's approach is completely different from Mijia's: it doesn't brand itself but packages networking modules, cloud services, and apps to manufacturers. If you search for "smart planters" or "smart fish tanks" on e-commerce, those white-label brands you haven't heard of are probably doodles inside.

advantage is that it's cheap and has a variety of items: waterers, fish tanks, pet water dispensers—corners that Mijia can't even handle—have all kinds of graffiti. There are two layers of drawbacks. First, the app experience depends on the manufacturer's mood; devices on the same platform can have three or four different interface styles; Second, heavy cloud dependency—device control basically passes through Tuya's cloud, and once broadband is cut off, local linkage is basically impossible—my sister's phone still runs regularly after the internet goes out, but if you want to manually add water to your phone, it's out of reach.

my suggestion: use graffiti devices as a "filler." Categories not available on Mijia, cheap items needed for last—there's no problem buying them; The whole house is focused on graffiti, but I don't have the guts to do that. The "Whole-House Smart Gift Pack" in Old Sun's shopping cart, worth over 2,000 yuan, was a finished product of the Doodle Scheme when I clicked on it. It had everything, but the household registration was all scattered—that's exactly why I wanted to keep him in check.

Apple Family: Rules Bigger, Privacy Best, Ticket Toughest

if you have many iPhones at home, Apple's "Home" line is worth counting separately. Its benefits are real: high localization, automation runs on your home hub, and data doesn't leave the door; Siri responds instantly, and the interface is clean.

the threshold is the toughest among the four paths. If you want to use the full suite of features (remote control, automation, family sharing), you need a "home hub" at home—it can only be a HomePod, HomePod mini, or Apple TV 4K, starting at just over 700 yuan. The old tutorial online says, "Always plug in an old iPad as a hub," but that path is blocked: under Apple's new home architecture, the iPad no longer supports the hub, and even the Apple TV HD is out of the league. The first time I helped a friend with it, I followed the old tutorial for half an hour and realized that the option in the settings was completely gone.

there's another reality: devices that natively support HomeKit are generally overpriced. The "Works with Apple Home" label requires payment to authenticate, and the cost ultimately lies in the selling price. Fortunately, Matter has been breaking down the wall in the past two years—Apple can now directly add new devices with the Matter logo. I tried controlling Mijia's device with my wife's iPhone, and it worked, but cross-ecosystem integration was occasionally a bit slow.

four paths laid together, Old Sun's accounts are calculated this way

After

four roads, I laid out the account for Old Sun to see:

Sun's situation: both use Androids, the son's family uses iPhones but don't live in the same place. The home gateway is from Mijia, and robot vacuum is also acquired from the Mijia ecosystem. This account isn't hard to calculate—the main entity goes to Mi Jia, and conveniently revitalizes the existing foundation; His son occasionally comes back to live and wants to control it with an iPhone, just add a device with the Matter logo—there's no need to buy a HomePod for that.

Here's

list: For switch panels, he gritted his teeth and went for the Aqara Zero-Fire Edition (he left neutral wires during renovation, so the quality is worth the money, panels are something you touch every day); Lighting fixtures, sockets, sensors, curtain motors all at Mijia—that second-hand gateway serves as a base; Fill in the corner of the waterer with graffiti; A gift package worth over 2,000 yuan was refunded.

the rules before buying three items at the end—following them can help you avoid detours. First, count the phones at home. For Android, go to Mijia; for Apple, include Aqara and HomeKit. Second, try to use the same household registration for devices in the same room. Cross-platform linkage relies on Matter bridging, minimizing as much as possible—not only is it slow but it can also cause drops. Third, every time you buy a device, the first thing you do when entering the app is to rename and add a labeled room. The "Living Room - Main Light" is a hundred times better than the "Unnamed Device 27." Six months from now, you'll be grateful for who you are now.

Old Sun slipped the gateway back into his pocket when he left, muttering as he went downstairs, "If I had asked earlier, you could save two thousand." Actually, it's not that you saved 2,000; it's that the 2,000 you bought was bulk equipment from a household registration book, and only after returning it would you be considered saving.