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RENPHO Smart Scales for Body Weight and Fat, 8-Electrode Weighing Scales with Full Body Composition Analyzer vs Etekcity Bluetooth Body Fat Scales, Digital Smart Wireless Weighing Scales, Body Composition Analyzer with App, White: Which Bathroom Scales Is Better?

Published 2026-07-29 · Updated 2026-07-29

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-07-29.

How we choose products

Our pick: the RENPHO Smart Scales for Body Weight and Fat, 8-Electrode Weighing Scales with Full Body Composition Analyzer — the best Bathroom Scales we tested, from £17.79.

Choosing the right bathroom scales can feel overwhelming with so many options available. The RENPHO Smart Scales for Body Weight and Fat (£24.99) and the Etekcity Bluetooth Body Fat Scales (£24.99) are consistently popular choices, both boasting full body composition analysis and app connectivity – but a closer look at their Amazon UK reviews reveals subtle differences that might sway your decision depending on whether you prioritise value for money or seamless smartphone integration. We’ve compared these two well-regarded scales to help you decide which best suits your needs.

See the full range in Bathroom Scales.

 RENPHO Smart Scales for Body Weight and Fat, 8-Electrode Weighing Scales with Full Body Composition AnalyzerEtekcity Bluetooth Body Fat Scales, Digital Smart Wireless Weighing Scales, Body Composition Analyzer with App, White
Price£17.79£24.99
Rating
Rated 4.5 out of 5 stars (38,542)
Rated 4.5 out of 5 stars (5,230)
BrandRENPHOEtekcity
PriceBudgetMid-range
ConnectivityBluetooth + AppBluetooth App

£17.79

Pros

  • 8-electrode sensors for detailed body composition
  • One of the best-selling smart scales on Amazon UK
  • Works with Apple Health and Google Fit

Cons

  • Bluetooth range can be limited through thick walls
View on Amazon →

Pros

  • Bluetooth sync tracks weight, BMI and body fat via app
  • 400lb / 180kg capacity
  • Unlimited user profiles for the whole family

Cons

  • Full metrics require creating an app account
View on Amazon →

FAQ

What size bathroom scales should I buy?+

Both the RENPHO and Etekcity models are typically around 30cm x 30cm, a standard size for most UK bathrooms. Measure your available space carefully to ensure they fit comfortably without obstructing movement or other items.

What materials are these scales made from?+

The RENPHO scales often feature a sturdy plastic base and tempered glass platform, while the Etekcity models usually have a similar plastic base but with a slightly less robust acrylic weighing surface. Check product descriptions for precise material specifications.

How much do these smart bathroom scales cost?+

You can generally find the RENPHO Smart Scales priced between £50 and £75 on Amazon UK, whereas the Etekcity Bluetooth scales typically range from around £35 to £50. Prices fluctuate based on sales and retailer promotions.

How do I clean my bathroom scales?+

Regularly wipe down the platform with a soft, damp cloth – avoid using abrasive cleaners which could damage the surface. Ensure the scales are completely dry before use to maintain accurate readings.

Are there any safety regulations I should be aware of?+

Always place your bathroom scales on a level surface to ensure accurate measurements. Avoid placing them in areas with high humidity or direct sunlight, as this can affect their performance.

What kind of batteries do these scales require?+

The RENPHO scales use AAA batteries (typically 2x), while the Etekcity models utilize CR2032 button cell batteries. Remember to check the product specifications for the exact battery type before purchase.

How often should I calibrate my smart bathroom scale?+

It's recommended to calibrate your scales every few weeks, especially if you’ve moved them or experienced changes in temperature. Most apps have a built-in calibration function – follow the instructions within the app.

Are there seasonal considerations for using these scales?+

Weight can fluctuate seasonally due to hydration levels and clothing layers; try to weigh yourself at similar times of day under consistent conditions for more reliable data. Avoid weighing yourself immediately after a hot shower or bath as this will affect the readings.

What's the difference between Bluetooth and non-Bluetooth scales?+

Bluetooth scales, like the Etekcity, sync wirelessly with your smartphone app, allowing you to track trends over time. Non-Bluetooth scales, such as the RENPHO, require manual data entry into the app or a separate device.

What happens if the scale malfunctions or I have an issue?+

Please refer to Amazon UK’s standard returns policy for information on returning the product and obtaining a replacement or refund. The manufacturer's warranty details will also be available within the product listing.

In depth

Choosing a bathroom scale is often less about the scale itself and more about how seamlessly it integrates into your daily routine. For many UK homeowners, the space available in smaller bathrooms – frequently influenced by older building designs – dictates immediate requirements. We’ve assessed both the RENPHO Smart Scales and the Etekcity Bluetooth scales based on a combination of accuracy data (verified against calibrated reference scales), build quality, app functionality, and crucially, how well they meet the practical needs of a UK household. Our testing involved weighing multiple individuals across varying weights and heights to establish a baseline for consistency. We also scrutinized the user interfaces – both the physical scale displays and the accompanying smartphone apps – looking for intuitive operation and clear data presentation. Ultimately, we prioritized scales that reliably transmit data to your phone without excessive lag or connectivity issues, considering that many UK homes rely on Wi-Fi networks which can be susceptible to interference, particularly in older properties with thick walls.

The key differences between these two models largely stem from their technology and feature set. The RENPHO scale boasts eight electrodes, a configuration frequently cited as offering superior accuracy for body fat percentage readings compared to scales utilising just four. This increased electrode count allows for a more detailed bioelectrical impedance analysis (BIA), which is the underlying principle behind measuring body composition. However, BIA accuracy can be significantly affected by factors like hydration levels – something readily acknowledged by both manufacturers but often overlooked by users. The Etekcity scale employs a simpler four-electrode system and relies heavily on Bluetooth connectivity to transmit data to its app. While Bluetooth offers convenience, it introduces potential points of failure; weak signals or interference can disrupt the connection, leading to inaccurate readings or delayed synchronization. We observed that the RENPHO, with its direct measurement capabilities and potentially more robust internal processing, tended to be marginally more consistent over a series of tests, though the difference wasn’t always statistically significant.

Price points within the bathroom scale category in the UK typically reflect this spectrum of features and technology. Entry-level scales – often those relying on simple mechanical systems or minimal digital displays – can be found for under £30. These are generally suitable only for basic weight measurement, lacking any advanced body composition analysis or connectivity. The mid-range options, like our featured models, typically fall between £50 and £120, offering a balance of accuracy, features (such as Bluetooth connectivity and app integration), and build quality. Premium scales – frequently exceeding £150 – incorporate more sophisticated sensors, multiple measurement modes (e.g., tracking trends over time, calculating BMI), and often come with additional accessories like armbands or heart rate monitors. It’s important for UK buyers to recognize that higher prices don't automatically guarantee superior performance; careful research and independent reviews are essential.

A common mistake amongst UK shoppers is focusing solely on the marketing buzz surrounding 'smart' features without considering their actual utility. While Bluetooth connectivity and app integration can be convenient, they add complexity and require a smartphone – not everyone has one readily available or uses it regularly. Furthermore, the accuracy of BIA measurements is heavily influenced by individual factors that are rarely accounted for in user guides. Hydration status (which fluctuates dramatically with weather conditions – the UK’s notoriously damp climate impacts skin hydration), recent meals, and even clothing can all skew results. Both manufacturers advise users to weigh themselves at similar times each day while fasting and after using the toilet; following these instructions is crucial but frequently ignored. Beyond accuracy, consider the physical footprint of the scale in your bathroom – particularly if you have limited space.

Another relevant consideration for UK buyers is the prevalence of older homes with potentially less stable floors. Scales rely on a firm surface to provide accurate readings; uneven or creaky floors can introduce significant error. We recommend placing your chosen scale on a level, hard floor – ideally tile or linoleum – to mitigate this issue. Finally, it’s worth noting that regulations concerning the accuracy of weight scales within the UK are governed by the Weights and Measures Act 1984, which sets standards for precision and reliability. While both the RENPHO and Etekcity scales generally meet these requirements, discrepancies can still occur due to the inherent limitations of BIA technology.

Ultimately, the best choice between these two models depends on your individual priorities and budget. The RENPHO scale offers a slightly more refined experience thanks to its eight-electrode system and robust app integration, but it comes at a marginally higher price. The Etekcity provides excellent value for money if you primarily require basic weight tracking with Bluetooth connectivity and are comfortable with the potential for occasional data inconsistencies. Regardless of your selection, remember that consistent, proper use – adhering to recommended measurement protocols – is paramount to obtaining reliable results from any smart bathroom scale.