Merkury Smart

House & Home · Merkury Innovations

Merkury Smart icon
17.3K ratings
4.0
Installs
500K+
Price
Free
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Merkury Smart screenshots

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Merkury Smart is the companion app for Merkury Innovations' own line of connected home products, and it is free to download. If you own a Merkury camera, doorbell, bulb, plug or light strip, this is the software that ties those devices together and lets you operate them from a phone. The reason to consider it is straightforward: it is the intended control center for that hardware, and it covers both security cameras and everyday lighting and power accessories in one place.

The app has been around since November 2022 and carries a 4.0 average from more than 17,000 ratings, with over 500,000 installs. Those numbers suggest a reasonably established tool rather than a fresh experiment, which matters for anyone buying into a device ecosystem and wondering whether the software side will hold up.

Cameras, alerts and recorded clips

The camera side of the app is where most of the substance sits. Merkury Smart works with the Indoor Smart Camera, the Outdoor Smart Camera, the Auto-Follow Smart Camera, the Doorbell Camera and the Wi-Fi Floodlight Camera, and it gives you live HD streaming from any of them. The idea is that you can glance at what is happening at home or at a business without being there, which is the basic promise of any connected camera setup.

Motion detection feeds into notifications, so the app can tell you when something moves in view. Beyond the alerts, you can set up Rules that record and save events as they happen, which is a more deliberate approach than simply scrolling through a timeline after the fact. Recorded HD video and photos can be reviewed later, and individual clips can be downloaded or shared when you need to pass footage on to someone else.

Multiple cameras can sit under a single account, and the app is built to reach cameras across more than one location. That makes it plausible for someone keeping an eye on a house and a separate property, or a small business with more than one site, without juggling separate logins.

Lights, plugs and the rest of the lineup

The app is not only about surveillance. It also handles the Smart Color Bulb, the Smart LED Strip, the Smart Plug and the Wi-Fi Outlet Extender, which widens its appeal to anyone who wants lighting and power control rather than cameras alone. The bulbs can be dimmed and adjusted, and the developer notes that they carry Wi-Fi built in for setup, with control available through the app or by voice.

The LED strips are pitched for cabinets, furniture and televisions, and they offer a wide range of color and temperature options, which is the sort of feature people buy strips for in the first place. The Smart Plug and Outlet Extender let you switch connected devices on or off remotely, including from another city, and the in-wall outlet design is meant to keep sockets free in rooms like the living room, kitchen or bedroom.

What ties these together is the anywhere-control idea: the app is presented as a single point from which you can reach your devices regardless of where you are. For a household that has already standardized on Merkury hardware, that consolidation is the main draw.

What the app asks of you

The most important thing to understand is that Merkury Smart is a companion, not a standalone service. Every device it controls comes from the Merkury range, so the app is only useful if you own that hardware or intend to buy it. Someone with cameras or bulbs from other manufacturers will not find a use for it here.

The app itself is free, so there is no second layer of cost to weigh on the software side. The trade-off is ecosystem lock-in rather than money: your experience is defined by which Merkury devices you have, and the app's value grows as you add more of them.

The most recent update covers bug fixes, performance work and improvements to device setup, notifications and the general app experience, which points to ongoing attention to the parts of the app people touch most often. Setup and alerts are exactly where a companion app tends to succeed or frustrate, so that focus is sensible.

A fit for Merkury households

This app suits people who have bought into Merkury's hardware, whether that means a single camera by the front door or a broader setup spanning cameras, a doorbell, bulbs, strips and plugs. It is also a reasonable starting point for someone assembling a first smart home around budget-friendly Merkury gear, since the app covers several device types rather than just one.

It is less relevant to anyone who already runs a mixed collection of brands and wants a single hub for all of them, or who owns only one Merkury device and has no plans to expand. The app is built for its own catalog, and its usefulness scales with how much of that catalog you own.

Renters and homeowners alike could find the plug and bulb side handy, since those devices do not require permanent installation, while the camera features speak to anyone who wants to check in on a property while traveling. The common thread is ownership of Merkury devices, not a particular living situation.

Is Merkury Smart worth installing?

If you own Merkury smart devices, installing the app is the obvious move, because it is the intended way to control them. Live HD streaming, motion notifications, recording rules, multi-camera accounts and remote control of lights and plugs add up to a capable free companion.

If you do not own any Merkury hardware, there is nothing here for you yet, and the app is not trying to be a universal hub for other brands. The decision, then, is less about the app and more about the devices: choose Merkury gear and this becomes a useful, well-established tool with a solid rating behind it; choose another ecosystem and you will never open it.

The short verdict

A capable free companion for Merkury hardware owners, with little to offer anyone outside that ecosystem.

What's new in version 3.21.0

This release includes bug fixes, performance improvements, and enhancements to device setup, notifications, and the overall app experience.

App specs

  • Version3.21.0
  • UpdatedSeptember 21, 2026
  • Downloads500K+
  • RequiresAndroid 7.0+
  • PriceFree
  • Age ratingEveryone

Merkury Smart: frequently asked questions

What devices does Merkury Smart work with?

The app is built for Merkury's own hardware, including the Indoor, Outdoor and Auto-Follow Smart Cameras, the Doorbell Camera, the Wi-Fi Floodlight Camera, the Smart Color Bulb, the Smart LED Strip, the Smart Plug and the Wi-Fi Outlet Extender. It is not a universal hub for other brands.

Can I watch live video and get alerts when motion is detected?

Yes. The app provides live HD streaming from supported cameras, and it sends notifications when motion is detected. You can also set up Rules so that events are recorded and saved as they happen.

Can I review and share recorded footage?

The app lets you play back captured HD clips and stills. Individual clips can be downloaded and shared with other people when you need to pass on what happened.

Does the app cost anything or show ads?

Merkury Smart is free to download. Any cost is in the Merkury devices themselves, not in the software.

Can I control lights and plugs remotely?

The app supports the Smart Color Bulb, Smart LED Strip, Smart Plug and Wi-Fi Outlet Extender, so you can operate connected lighting and devices from wherever you are. The bulbs can be dimmed and adjusted, and the developer notes they have Wi-Fi built in for setup.

Pros

  • Free
  • Handles cameras, doorbells, bulbs, plugs and strips
  • Live HD streaming with motion notifications
  • Rules record and save events automatically
  • Multiple cameras and locations on one account

Cons

  • Only works with Merkury-brand devices
  • Value depends on owning that hardware
  • Camera features need Merkury cameras

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