Best budget smart scale
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Low-cost Bluetooth smart scale with 13 body metrics and a weight-only mode, $38.98
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US price, checked
Smart scale
Renpho Elis 1 Smart Body Scale
Basic Bluetooth smart scale with 13 body metrics in a free app, $24.99
$24.99US price, checked
Check price at Renpho for Renpho Elis 1 Smart Body Scale 
Our founder, Porsche Ma, has used this one. Like every review here, it rests on published sources, not hands-on testing. Our method
Porsche also cofounded Superhuman Chambers, which sells hyperbaric chambers · About the author. This is general information, not medical advice, and no clinician has reviewed it.
The verdict
Elis 1 is Renpho's entry scale: a four-electrode glass scale that shows weight and sends 13 body metrics to the free Renpho Health app. It suits you if you want a low-cost weight trend and treat body fat as a rough guide. The catch: it reads through the feet only, and Renpho gives no accuracy figure for body fat. If you want Wi-Fi sync and a battery Withings rates at 15 months, look at the Withings Body Smart.
The trade-off
It reads through the feet only, Renpho gives no body-fat accuracy figure, and only weight shows on the scale.
At a glanceSmart scale
- Body composition method
- Bioelectrical impedance through 4 electrodes in the platform
- Weighing
- 6.6 to 400 lb (3 to 180 kg) in 0.1 lb (0.05 kg) steps
- Display
- LED display
- Users and ages
- Unlimited profiles in the app, with automatic user recognition
Model reviewed: Elis 1 (ES-CS20M by Renpho's part number), three AAA batteries included
No affiliate commission on this link. Check the exact variant before buying.
- Returns 30 days from delivery. See conditions
- Warranty 18 months from the original retail purchase for buyers in the US and Canada. See conditions
About this price
List price on Renpho's US store, in US dollars on Oct 20, 2026, with no sale price or crossed-out regular price. Renpho's free US shipping starts at $29.99, which is above this price, and the fee for a single scale isn't stated. Tax is extra.
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A GOOD FIT FOR
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 records weight trends in a free app
- You treat body fat, muscle and water readings as rough guides and watch the trend
- You want your readings to sync to Apple Health, Fitbit, Samsung Health or MyFitnessPal
THINK TWICE IF
- You wear a pacemaker or have a metal implant and want body composition readings: Renpho advises weighing only, with shoes on
- You're pregnant and want body composition readings: Renpho advises weighing only
- You want fat and muscle readings for each arm and leg, which a scale without a handle doesn't give
- You need body-fat accuracy that Renpho or an independent study has confirmed for this model
What still needs checking
- 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
Is the Renpho Elis 1 smart scale accurate?
Renpho lists weight accuracy of ±0.3 kg at 50 kg and ±0.5 kg at 150 kg, but gives no accuracy figure for body fat3.
Renpho says body composition analysis is inexact whichever scale or method you use, so you should watch trends, not day-to-day numbers3.
In a 2023 lab study of 73 healthy adults, a RENPHO scale read body fat 1.4 points low on average against a four-compartment model8. Its total error against the reference model was 7.2 points, and the paper rated its standard error of the estimate “poor”. The paper gives no model number, so it may not be the Elis 18.
Does the Renpho Elis 1 need a subscription?
Renpho lists none: it says the Renpho Health app is completely free to download and use on iOS and Android6. The App Store lists the app at no charge9.
The scale needs the app to show anything beyond weight: only weight appears on its display, and the other 12 metrics are in the app13.
Can you use the Renpho Elis 1 with a pacemaker?
Renpho advises people with a pacemaker to use the scale for weighing only and to wear shoes so no electric current passes through them13.
It gives the same advice for pregnancy, osteoporosis, artificial joints, a portable ECG or other metal implants, and for children under 813. Renpho’s manual page gives the age as under 10 instead3.
The practical details.
| Exact variant | Elis 1 (ES-CS20M by Renpho's part number), three AAA batteries included |
|---|---|
| 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 |
| Dimensions | The scale's size and weight are unknown. Renpho's product page lists only a 400 lb capacity. |
| Materials | Glass, per Renpho's product page. Renpho's manual page, which covers several scale models, lists tempered glass with HIPS plastic. |
Before you buy
InstallationNo 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.
Warranty18 months from the original retail purchase for buyers in the US and Canada…
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.
Returns30 days from delivery, per Renpho's shipping and returns page
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.
More about this assessment
Elis 1 is Renpho's entry smart scale and, Renpho says, its best-seller. It lists at $24.99, has four electrodes in a glass platform and shows only weight on its LED display. It sends 13 body metrics to the free Renpho Health app over Bluetooth. Renpho says Elis scales measure mainly the lower body and estimate the upper body with algorithms, and it gives weight accuracy figures but none for body fat. A 2023 lab study found a RENPHO scale of no stated model read body fat 1.4 points low on average. Renpho advises people with a pacemaker, or who are pregnant, to use it for weighing only.
Strengths on paper
- Lists at $24.99
- Unlimited profiles in the app, with automatic user recognition
- Syncs to Apple Health, Fitbit, Samsung Health and MyFitnessPal
- Renpho says the Renpho Health app is completely free
- 18-month warranty and a 30-day return window
Limitations
- Only weight shows on the scale. The other 12 metrics need the app
- Reads through the feet only: Renpho says Elis scales mainly measure the lower body and estimate the upper body with algorithms
- Renpho gives no accuracy figure for body fat, and its FAQ says body composition analysis is inexact whichever method is used
- In a 2023 lab study, a RENPHO scale of no stated model read body fat 1.4 points low on average, with a total error of 7.2 points against the reference model
- Renpho advises people with a pacemaker, artificial joints or other metal implants, or who are pregnant, to use it for weighing only, with shoes on
- Uses disposable AAA batteries that Renpho rates at up to 4.5 months
- Free shipping starts above the scale's price, and a personal-reason return costs you return shipping
Running costs.
PLAN YOUR OWNERSHIP COSTS
What will it cost to own?
Change the assumptions to fit your use. Leave an unknown cost blank. Add water, subscriptions, cleaning, shipping and taxes if they apply. Use average operating power, not the maximum rating.
3-year known subtotal
$24.99Incomplete: annual consumables, energy use. This is not the full ownership cost.
Energy component: Unknown
Purchase + installation + years × (annual consumables + annual other) + watts/1000 × hours/day × 365 × years × $/kWh. Annualized allowances, not an exact replacement schedule. Excludes taxes, shipping, finance and resale unless entered.Replacement parts & cost assumptions
Recorded recurring parts and refills:
- AAA batteries (three): price not stated, every 4.5 months. Renpho includes the first set and gives a battery life of up to 4.5 months. It doesn't price replacements.
- Purchase is the $24.99 list price on Oct 23, 2026, before tax. Shipping isn't counted, since the fee for a single scale isn't stated.
- Other annual costs are $0 because Renpho says the Renpho Health app is completely free to download and use.
- Annual consumables are unknown. Renpho gives a battery life of up to 4.5 months for the three AAA batteries, which would mean about three sets a year. It doesn't price replacements. The scale is battery-powered, so energy use isn't counted.
Evidence & sources.
Are smart scales worth it? Our evidence review grades the research as Moderate. That grade is about the claim, not about this product.
- Manufacturer claimPrice, specs, box contents, battery life, connectivity and the 18-month warranty come from Renpho's US product page. The 30-day return terms come from Renpho's shipping and returns page, and the warranty terms from its warranty page.1245 Manufacturer information, not independent testing. The 4.5-month battery figure appears in a model comparison table on the product page. The model number ES-CS20M comes from the part number in Renpho's store listing and from the manual page's model list.
- Manufacturer claimRenpho says its body scales use bioelectrical impedance. It says Elis scales have sensors only in the base. The current passes through the lower body, and algorithms estimate the upper body. Its manual page says body composition analysis is inexact whichever scale or method is used, so you should watch trends, not day-to-day numbers. It lists weight accuracy of ±0.3 kg at 50 kg, ±0.4 kg at 100 kg and ±0.5 kg at 150 kg.36 Renpho gives no body-fat accuracy figure or reference method. The weight table sits in a manual page that covers several scale models.
- Manufacturer claimRenpho's collection FAQ says children under 8 should use the scale for weighing only. Its manual page says under 10. The FAQ gives the same advice for people who are pregnant or have osteoporosis, a pacemaker, artificial joints, a portable ECG or other metal implants. It says to wear shoes to prevent any electric current. It says the scale is for daily home use and shouldn't be considered for medical purposes.136 This is Renpho's own safety guidance, not a clinical finding.
- Published studyA 2023 laboratory study of 73 healthy adults aged 19 to 50 compared 15 body-fat devices with a four-compartment reference model. A RENPHO scale read an average of 1.4 percentage points low (95% CI -3.1 to 0.2). Its total error against the reference model was 7.2 points. The paper rated its standard error of the estimate "poor".8 The paper names the device "RENPHO Scale" with no model number, so it may not be the Elis 1. A Wyze Scale and a Withings Body Cardio were also in the study.
- Regulator recordFDA's openFDA 510(k) data returned no record with Renpho as applicant or in a device name. The Elis 1 pages claim no FDA clearance.1710 A database search isn't proof that no listing exists.
- Manufacturer claimRenpho says the Renpho Health app is completely free to download and use on iOS and Android. The App Store lists the app at no charge.69 Renpho's wording covers the app as a whole. The pages checked don't show any paid tier.
Sources (10)
- Elis 1 Smart Body Scale Renpho · manufacturer · checked Oct 23, 2026
- Elis 1 Smart Body Scale listing on Renpho's US store (price and availability) Renpho · manufacturer · price read from the store’s product data · checked Oct 20, 2026
- RENPHO body fat scale user manual Renpho · manufacturer · checked Oct 21, 2026
- Warranty terms and conditions Renpho · manufacturer · checked Oct 21, 2026
- Shipping and returns Renpho · manufacturer · checked Oct 21, 2026
- Smart scales (buying page with FAQ) Renpho · manufacturer · checked Oct 21, 2026
- openFDA 510(k) search for applicant Renpho (no matches) U.S. Food and Drug Administration (openFDA) · regulator · data file · checked Oct 20, 2026
- Assessing the reliability and cross-sectional and longitudinal validity of fifteen bioelectrical impedance analysis devices British Journal of Nutrition (Siedler MR et al.) · study · checked Oct 20, 2026
- RENPHO Health Apple App Store · independent test · checked Oct 21, 2026
- openFDA 510(k) search for Renpho in the device name (no matches) U.S. Food and Drug Administration (openFDA) · regulator · data file · checked Oct 20, 2026
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About this review. The facts on this page come from manufacturer pages, regulator records, published studies and independent tests, checked between Oct 20 and Oct 23, 2026. The sources are listed above.
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