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Smart scale

Renpho Elis 1 Smart Body Scale

Elis 1 (ES-CS20M by Renpho's part number), three AAA batteries included

$24.99US price, checked Oct 23, 2026

Basic Bluetooth smart scale with 13 body metrics in a free app, $24.99

Check price at Renpho Full review →

Smart scale

Wyze Scale X

Wyze Scale X, black or white, Classic or Butterfly sensor pattern (same price), four AAA batteries included

$38.98US price, checked Oct 23, 2026

Low-cost Bluetooth smart scale with 13 body metrics and a weight-only mode, $38.98

Check price at Wyze Full review →

Criterion	Renpho Elis 1 Smart Body Scale	Wyze Scale X
US price	$24.99Checked Oct 23, 2026 · Price details in the review	$38.98Checked Oct 23, 2026 · Price details in the review
Three-year ownership estimate	$24.99 Incomplete known subtotal. Not included: annual consumables, energy use.	$38.98 Incomplete known subtotal. Not included: annual consumables, other annual costs, energy use.
Choose if	You want a low-cost scale that records weight trends and sends body readings to a free app.	You want a low-cost scale that tracks weight trends and sends body readings to the Wyze app.
Main trade-off	It reads through the feet only, Renpho gives no body-fat accuracy figure, and only weight shows on the scale.	Wyze gives no accuracy figure that names the Scale X, and only weight and body fat show on the scale while the app holds the rest.
Key specifications	Body composition method: Bioelectrical impedance through 4 electrodes in the platform. Renpho says current runs up through one foot, into the lower body and down the other foot, and the upper body is estimated with algorithms. The app shows 13 metrics: weight, BMI, body fat %, body water %, skeletal muscle, fat-free body weight, muscle mass, bone mass, protein, basal metabolic rate, subcutaneous fat, visceral fat and metabolic age. Renpho doesn't state the frequency Weighing: 6.6 to 400 lb (3 to 180 kg) in 0.1 lb (0.05 kg) steps. Units: lb and kg. Renpho's manual page lists the ES-CS20M among its models. It gives weight accuracy of ±0.3 kg at 50 kg, ±0.4 kg at 100 kg and ±0.5 kg at 150 kg Display: LED display. Renpho lists weight as the one body metric shown on the scale; the other 12 are in the app Users and ages: Unlimited profiles in the app, with automatic user recognition. The manual page says children under 10 and adults over 70 get weighing only, while Renpho's collection FAQ says children under 8 Connectivity and app: Bluetooth, version 5 per the manual page. Works only with the Renpho Health app, which the App Store lists as requiring iOS 15.1 or later. The App Store also lists Apple Watch. Syncs with Apple Health, Fitbit, Samsung Health and MyFitnessPal Battery: Three AAA batteries, included. Renpho gives a battery life of up to 4.5 months Use guidance: Bare feet on the electrodes, a hard flat surface, and weighing at the same time each day. The scale switches off after 10 seconds. Renpho says to recalibrate it if it has been moved or turned upside down In the box: Elis 1 Smart Body Scale, three AAA batteries and a manual	Body composition method: Bioelectrical impedance through 4 electrodes in the glass surface. The Wyze app shows 13 metrics: weight, body fat %, heart rate, lean body mass, BMI, muscle mass, muscle mass %, visceral fat, basal metabolic rate, bone mass, metabolic age, protein and body water %. Only weight and body fat show on the scale Weighing: Four independent leg sensors. Range 11 to 400 lb (5 to 180 kg). Units: lb and kg Heart rate: Measured in the Wyze app in under 10 seconds, according to Wyze. The scale's display shows only weight and body fat Users, ages and modes: Up to 8 users, told apart by weight: they must differ by more than 13.2 lb with the app closed, or 6.6 lb with it open. Body composition appears for ages 10 to 100. Baby, pet, luggage and pregnancy modes, plus a weight-only mode that switches the current off Connectivity and app: Bluetooth 5.0 (BLE), with a range of up to 32 ft in Wyze's testing. The scale stores readings and syncs when you open the Wyze app. Needs iOS 12 or Android 7.0 or later, and syncs with Apple Health, Fitbit and Health Connect. Wyze's spec list names no other connection Battery: Four 1.5 V AAA batteries, included. Wyze says up to 22 months of battery life Display and operating range: LED display for weight and body fat. Operating temperature 41°F to 104°F (5°C to 40°C), storage -4°F to 131°F Use guidance: Bare feet on both electrodes for body composition. With socks or shoes on, the scale measures weight only. Damp feet are fine, but wet feet may affect accuracy. Wyze says carpets and rugs can affect calibration In the box: Wyze Scale X, four AAA batteries and a quick start guide
Exact variant	Elis 1 (ES-CS20M by Renpho's part number), three AAA batteries included	Wyze Scale X, black or white, Classic or Butterfly sensor pattern (same price), four AAA batteries included
Dimensions	The scale's size and weight are unknown. Renpho's product page lists only a 400 lb capacity.	11.8 x 11.8 x 1.18 in and 3.96 lb (1.80 kg), per Wyze's tech specs and its comparison table.
Installation	No installation. The three AAA batteries are included. Put the scale on a hard, flat floor, since Renpho says carpet causes inaccurate readings. Download the free Renpho Health app, create an account or use guest mode, and pair the scale over Bluetooth while standing on it with bare feet.	No installation. Put the scale on a hard, flat floor, since Wyze says carpet affects calibration. Pair it in the Wyze app over Bluetooth, then enter your year of birth, height and other details. Stand on it with bare feet. Four AAA batteries are included.
Materials	Glass, per Renpho's product page. Renpho's manual page, which covers several scale models, lists tempered glass with HIPS plastic.	Tempered glass with an ITO (indium tin oxide) coating. Wyze describes the glass surface as the electrodes. It lists an IPX3 water rating and names no frame or base material.
Warranty	18 months from the original retail purchase for buyers in the US and Canada, per Renpho's warranty terms. They apply to scales bought on Renpho's own site, and other sales channels may differ. The product page also says 18 months, but Renpho's manual page still says one year. Renpho repairs, replaces or refunds at its choice. Batteries made to diminish over time, cosmetic damage, accidents, liquid contact and unauthorized service aren't covered.	18 months when you buy from Wyze on or after Jan 1, 2026, and 1 year when you buy from an authorized retailer. Those terms come from Wyze's policy effective June 12, 2026. The product page's spec list still says 1-year, while its wyze.com benefits box says 18 months. Wyze replaces the scale or refunds the purchase at its choice. Misuse, modification, attempted repairs and unauthorized retailers aren't covered, and you need proof of purchase.
Returns	30 days from delivery, per Renpho's shipping and returns page. If you return the scale for a personal reason, it must be unused and in its original packaging. You pay return shipping, and Renpho charges no restocking fee. If it arrives damaged or defective within 30 days, Renpho pays return shipping and gives a full refund or a free replacement. Contact support first, and Renpho then sends a prepaid label.	30 days from the purchase date, only for scales bought on wyze.com or in the Wyze app. You start the return in Wyze's return portal and Wyze sends a prepaid label. The scale must come back in original condition with its accessories and packaging. Wyze refunds the price and sales tax to your payment method, as store credit or on a gift card, at its choice. It doesn't refund shipping and handling. Purchases made during special sale events may be non-returnable.
Unresolved questions	Accuracy of the scale's body composition readings: Renpho gives no figure, and no study naming the Elis 1 was found Which RENPHO scale the 2023 study tested The impedance frequency Which age limit applies to body readings: the manual page says under 10 and over 70 get weighing only, and the collection FAQ says under 8 Whether the warranty is 18 months, as the warranty terms and product page say, or the one year in the manual page Shipping cost for a single scale, and how return shipping is charged for a personal-reason return What replacement AAA batteries cost, since Renpho doesn't price them Whether the app has any optional paid feature, since Renpho calls it completely free The scale's size and weight	Accuracy of the Scale X's weight and body composition readings: Wyze gives no figure, and no study naming the Scale X was found Which Wyze Scale model the 2023 study tested Whether the Wyze app or any scale feature ever needs a paid plan What replacement AAA batteries cost, since Wyze doesn't price them Shipping cost for a single scale

These comparisons use published specifications, not head-to-head tests. Prices and terms are dated. Unknown costs are not zero. Check the exact variant before you buy.