We compared two Bluetooth smart body composition scales: the RENPHO Elis Aspire and the Xiaomi Smart Scale S400.
What we looked at
Stated accuracy and capacity, number of body metrics, connectivity and apps, users, extra modes, and price.
The verdict
If you want a Wi-Fi and Bluetooth scale that tracks 13 body measurements and syncs with health apps for £19.99, the RENPHO Elis Aspire is the value pick. If you would rather pay £30.00 for 25 body composition metrics, heart rate detection and dual-frequency electrodes, the Xiaomi Scale S400 is the more detailed option, though only one was left when we checked.
A Wi-Fi and Bluetooth scale with 13 body measurements and health-app sync for £19.99.
A Bluetooth scale with 25 body metrics and heart rate detection, but £10 more and nearly out of stock.
RENPHO Smart Body Weight Scales, Wi-Fi and Bluetooth, 13 Body Composition Metrics (Elis Aspire) — Best Value
Intended for: Marketed as a Wi-Fi and Bluetooth smart body scale that syncs with the Renpho app and health apps, measures in 0.05kg increments up to 180kg, and reports 13 measurements including body fat, BMI, bone mass and muscle mass.
What we liked
- Cheaper than the Xiaomi Scale S400 on these listings
- Transfers data over 2.4GHz Wi-Fi or Bluetooth 4.0 and above
- Syncs Renpho app data with Samsung Health and Apple Health, per the listing
- 0.05kg (0.2lb) increments and a 180kg (396lb) capacity, with ITO coating technology
- 13 measurements including weight, body fat, BMI, bone mass and muscle mass
- Unlimited users on one account, in Bluetooth mode only
Worth knowing
- 13 measurements against the Xiaomi's 25 metrics
- The unlimited-users feature is for Bluetooth mode only
Best for
- Households that want to track several people on one account
- Buyers who want Wi-Fi sync and health-app integration
- Anyone who wants the lower price
Not ideal for
- Anyone who wants heart rate detection listed
- Buyers who want the most detailed body metrics
XIAOMI Bluetooth Digital Smart Bathroom Scales S400, 25 Body Composition Metrics — Most Metrics
Intended for: Marketed as a Bluetooth smart bathroom scale with dual-frequency BIA and large 58 mm electrodes, accurate to 0.05 kg from 0.1 to 150 kg, measuring 25 body composition metrics with heart rate detection.
What we liked
- 25 metrics stated, including weight, BMI, visceral fat, muscle mass, water, protein and bone mass
- Heart rate detection, and dual-frequency BIA with large 58 mm electrodes
- Step-on auto induction, auto power on and off, self-calibration and a low-battery reminder
- Baby weighing, balance test and small-item weighing modes, plus a guest mode that does not save strangers' data
- Hidden LED screen and a 300 x 300 mm anti-slip tempered glass platform
Worth knowing
- Costs £10.01 more than the RENPHO on these listings
- Only 1 was left in stock when checked
Best for
- People who want detailed body composition metrics and heart rate
- Households that want baby and balance modes
- Anyone who wants a large glass platform
Not ideal for
- Budget-conscious buyers
- Anyone who wants Wi-Fi sync listed
