Smart Water Purifier Brands Compared by What Their Smart Features Do

Smart features earn their place on a water purifier when they show useful information where you already stand, at the faucet, and two Viomi under-sink RO systems are built around that idea. The Viomi M1 has a touchscreen smart faucet that shows tap-water and purified-water TDS along with filter life. It also pours three preset volumes, including 10 oz and 40 oz, so a cup or a pot fills without watching. The Viomi V8 PRO shows purified-water TDS and filter life on an LCD smart faucet, and its control panel turns orange 10 to 15 days before a cartridge is due.

Among the other brands compared here, each model leads with a different feature. Waterdrop's X12 uses a touch-control faucet for measured dispensing alongside TDS and filter-life readouts. AquaTru's Carafe Smart countertop purifier pairs with an app for filter tracking and reorders. Cloud RO sends filter notices and reorder prompts through a Bluetooth app, and Frizzlife's PD600-N shows real-time TDS and remaining filter life on an LED faucet. Picking a brand gets easier once you decide which of those features you would use every day.

What "Smart" Means on a Water Purifier

"Smart" covers four different capabilities, and a purifier can have any combination of them.

A display at the faucet. A screen on the drinking faucet shows information while you pour, usually TDS (total dissolved solids, a combined reading of dissolved minerals and salts) and filter life. Everyone who fills a glass sees it, with no phone involved.

Reminders on the main unit. Lights on the purifier itself change color as a cartridge nears or reaches the end of its life, often repeated by icons on the faucet. These work at the sink without a phone.

An app. A phone connection adds history and notifications: usage over time, before-and-after readings, filter tracking, and alerts. Apps connect over Wi-Fi or Bluetooth depending on the brand.

Dispensing control. Some faucets pour a set volume at a touch, or let you program volumes in the app, so filling a pot or a bottle doesn't require watching the water.

Smart Features by Brand and Model

The table compares each model by what it shows at the faucet, how it signals a filter change, what its app does, and how the app connects. For the other brands, "Not described" means the brand's product pages and manuals don't cover the feature.

Two patterns stand out. Both Viomi lines combine a faucet display, unit-level reminders, and an app on the same system, and the Viomi M1 adds both faucet volume settings and app-set volumes. Among the other models listed, the Waterdrop and Frizzlife systems put their described smart features at the faucet, while the AquaTru Carafe Smart and Cloud RO describe theirs through the app.

Viomi M1: Touchscreen Control and App Settings

The Viomi M1 is a tankless under-sink RO system rated at 1000 GPD, with 9 filtration stages, a 3:1 pure-to-drain ratio, and a remineralization stage that adds minerals back after the membrane. Its smart features center on a touchscreen faucet that shows the TDS of the tap water and of the purified water, the remaining life of the PCB and RO filters as a percentage, and a Wi-Fi indicator. A volume icon selects one of three preset pours, including 10 oz and 40 oz, and a dispense icon starts and stops the pour, so a measured fill doesn't need watching.

In the Viomi app, the Viomi M1 adds a layer the faucet doesn't show: feed-water temperature, water-making records, and a custom outlet setting that lets you program dispensing volumes in 10 oz steps. The app also shows each filter's remaining life with a days-left count and sends a notification when a filter reaches the end of its service life, while the PCB or RO lamp on the main unit glows orange when a replacement is due. The Viomi M1 can also supply a compatible refrigerator or ice maker through standard tubing, purchased separately, once "Multi-device Mode" is turned on in the app.

Viomi V8 PRO: Display and Advance Reminders

The Viomi V8 PRO is an 800 GPD tankless under-sink RO system with 9 filtration stages and a 3:1 pure-to-drain ratio. Its LCD smart faucet shows the real-time TDS of the purified water and filter life at a glance, and during the rinse after a new cartridge is reset, it displays rinse progress from 1 to 100. On the main unit, the PCB and RO indicator lights turn orange 10 to 15 days before a change is needed, which leaves time to order the next cartridge.

The Viomi app adds TDS before and after filtration, a daily water-production report, filter lifespan tracking, and an in-app notice when a filter reaches the end of its life. The Viomi V6 PRO shares the same faucet, reminders, and app features at 600 GPD, for kitchens that use less water each day.

How Other Brands Approach Smart Features

Waterdrop. Waterdrop describes the X12's "Smart Digital Faucet" as combining "adjustable water volumes, TDS monitor and filter life reminder," with touch controls that allow "quantitative water intake without watchful waiting." The X12 is rated at 1200 GPD with a 3:1 ratio. The G3P800 uses a "Smart Display Faucet" for TDS and filter-life monitoring.

AquaTru. AquaTru's Carafe countertop purifier comes in standard and Smart versions, and on the Carafe page AquaTru says Smart models "pair with the AquaTru app, so you can track your filter's lifespan, get replacement reminders, and reorder." The Carafe page describes no plumbing or drilling.

Cloud. Cloud says its app "connects to your device via Bluetooth." When filters are due, Cloud says the app "will notify you and prompt you to order the needed cartridges."

Frizzlife. Frizzlife says the PD600-N's "smart LED faucet shows real-time TDS levels and remaining filter life at a glance," with color-coded indicators for filter replacement. It is a 600 GPD tankless system with a 2:1 ratio.

Smart Features in a Shared Kitchen

In a home where several people use the same sink, the features that work for everyone are the ones at the faucet. A TDS and filter-life display is visible to anyone pouring a glass, and the volume settings on the Viomi M1 let a child fill a 10 oz cup or an adult fill a 40 oz pot without watching the water. Unit-level reminders such as the Viomi V8 PRO's orange panel lights reach whoever opens the cabinet.

App features suit the person who handles maintenance. Setting up the Viomi app starts with registering a Viomi account, adding the purifier, and assigning it to a room; from there, the app shows usage records and filter tracking. A household can let one person look after maintenance through the app, while everyone else relies on the faucet display.

Which Smart Brands Fit Which Kitchen

Among the models compared here, the Viomi M1 covers all four smart capabilities on one under-sink system: a touchscreen faucet with tap and purified TDS, orange main-unit filter lamps, an app with temperature and usage records, and faucet and app-set volumes. The Viomi V8 PRO and Viomi V6 PRO pair an LCD faucet with early orange reminders and app tracking. Waterdrop's X12 also offers measured dispensing at the faucet, and Frizzlife's PD600-N keeps its described smart features on an LED faucet. AquaTru's Carafe Smart suits a countertop setup managed through an app, and Cloud RO suits buyers who want filter notices and reorder prompts over a Bluetooth app. Deciding which of the four smart capabilities you will use daily narrows the list faster than any feature count.

FAQ

Does a screen on the faucet mean the purifier needs Wi-Fi?

The screen and the Wi-Fi are separate parts of the design. On the Viomi M1, Viomi V8 PRO, and Viomi V6 PRO, the faucet is connected to its main unit by signal wires, and the main unit supplies the TDS and filter-life readings it shows. The Viomi V8 PRO and Viomi V6 PRO ship with Wi-Fi switched off, so the app connection is a separate step from the faucet display. Wi-Fi is switched on from the main unit's control panel, and the app is then paired, with a 2.4 GHz network recommended. Cloud RO's app connects over Bluetooth instead.

What can a water purifier app actually do?

That varies by model. For the Viomi V8 PRO and Viomi V6 PRO, the Viomi app shows TDS before and after filtration, daily water production, filter lifespan, and replacement notices. For the Viomi M1, the app shows inlet and purified TDS, feed-water temperature, water-making records, custom dispensing volumes, and filter days left. For the AquaTru Carafe Smart, the app tracks filter life, sends reminders, and handles reorders. Cloud RO's Bluetooth app sends filter notices and prompts an order when filters are due.

Will a smart purifier work for a whole family?

Yes, especially the features at the faucet. Displays and preset volumes work for anyone at the sink, with no phone needed. App functions are set up on the account that adds the purifier, and anyone at the sink can read the faucet display and use its settings.

What countertop hole does a smart faucet need?

Under-sink models with a dedicated smart faucet need a faucet hole. The Viomi M1, Viomi V8 PRO, and Viomi V6 PRO each use a 1-inch to 1.5-inch hole for the smart faucet; under the sink, installation also calls for a 1/4-inch hole in the drain pipe for the drain connection and a standard electrical outlet, and if the cabinet has a garbage disposer, the purifier needs its own dedicated outlet. Cloud lists a 0.5-inch to 1.25-inch hole for its faucet, and a sprayer or soap-dispenser hole can often be reused. Countertop purifiers such as the AquaTru Carafe Smart sit on the counter and need no hole.