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Best Fitness Trackers & Smart ScalesBluetooth/WiFi (2026)

2 fitness trackers & smart scales matching connectivityBluetooth/WiFi, hand-picked from UK Amazon listings.

Not sure which one to pick? Read our Best Fitness Trackers & Smart Scales UK (2026) guide.

Withings Body Smart - Advanced Body Composition Wi-Fi Scale

#1 Pick

Withings Body Smart - Advanced Body Composition Wi-Fi Scale
Rated 4.5 out of 5 stars (1,893)
  • Bluetooth/WiFi

Currently unavailable

Pros

  • Detailed body composition metrics
  • Automatic syncing over WiFi
  • Premium build quality

Cons

  • Higher price point than basic scales
Check on Amazon →

£34.99

Pros

  • 16 body metrics including heart rate
  • 3D virtual body model in the app
  • Syncs with Apple Health, Google Fit and Fitbit

Cons

  • WiFi setup can be fiddly according to some reviews
View on Amazon →

Simplify your wellness routine with our curated selection of Bluetooth and WiFi enabled fitness trackers and smart scales. These devices seamlessly connect to your smartphone, providing detailed insights into your activity levels, sleep patterns, and body composition measurements. With both wireless connectivity options, you can choose the best fit for your needs, whether it’s syncing data on-the-go via Bluetooth or enjoying broader app integration through WiFi.

This collection focuses on devices offering a truly connected experience. You'll find trackers that not only monitor steps and heart rate but also integrate with popular fitness apps, allowing you to track progress across multiple platforms. Smart scales connect wirelessly to provide accurate weight measurements and often offer additional features like body fat percentage analysis and trend tracking.

We’ve carefully selected devices known for reliable connectivity and intuitive interfaces. Each tracker/scale offers a blend of functionality and ease-of-use, designed to help you stay motivated and informed about your health journey. Explore our range today to find the perfect device to enhance your wellbeing.

FAQ

Can I sync my Bluetooth fitness tracker with multiple apps?

Many models allow syncing with several fitness apps like Strava, MyFitnessPal, and Google Fit via Bluetooth. However, some trackers have limitations on simultaneous connections – check the device specifications before purchase.

How accurate are WiFi-enabled smart scales?

WiFi scales typically offer higher accuracy than basic Bluetooth models due to their ability to connect directly to a server for calibration and data processing. Regular calibration is still recommended, following the manufacturer's instructions.

What happens if my phone loses connection with the tracker?

Most trackers will retain data for a limited time (usually 24-72 hours) before syncing automatically when the Bluetooth connection is re-established. Note that lost connections may affect real-time tracking.

Do WiFi scales require a constant internet connection?

Yes, WiFi scales need a stable internet connection to transmit data and sync with the companion app. A weak signal can lead to inaccurate readings or syncing delays.

Is Bluetooth connectivity secure for health data?

Bluetooth trackers use encryption protocols to protect your data during transmission. However, it’s advisable to keep the tracker's firmware updated to benefit from any security enhancements.

How do I calibrate my smart scale?

Most WiFi scales require calibration using a standard weight (like a 1kg dumbbell) within the accompanying app. Follow the in-app instructions for precise calibration – this is crucial for accuracy.

Can Bluetooth trackers track sleep stages effectively?

Bluetooth sleep trackers use accelerometer data to estimate sleep stages, offering insights into light, deep, and REM sleep. Accuracy can vary depending on the device's sensors and algorithms.

What is the battery life of typical WiFi smart scales?

WiFi scales generally have a battery life of 3-6 months per set of batteries, dependent on usage. Replace the batteries when the low-battery indicator appears in the app.

Do Bluetooth fitness trackers support heart rate variability (HRV) tracking?

Some advanced Bluetooth trackers incorporate HRV monitoring to assess your body’s response to stress and recovery. Check specifications for specific tracker features.

What data does a WiFi smart scale provide beyond weight?

Beyond basic weight, many WiFi scales offer insights into body fat percentage, muscle mass, bone density, and water weight – providing a more holistic view of your health composition.