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Why Smart Scales Are a Game-Changer for GLP-1 Weight Loss


Smart scales are one of the most useful tools for tracking progress on Mounjaro and Wegovy. While weight loss jabs help reduce appetite and trigger fat loss, they can also lead to changes in lean muscle and hydration levels, things a standard bathroom scale can’t detect.


A Bluetooth smart scale or Wi-Fi body composition monitor can give you a more complete picture by showing:


  • Body fat percentage — to confirm real fat loss, not just water changes

  • Muscle mass — so you can adjust protein or resistance training as needed

  • Water weight — to understand daily fluctuations

  • Visceral fat — to monitor long-term metabolic health


These readings help you track body composition, not just weight, a big confidence booster when the scale number slows down but your shape continues to change.


Features to Look For in the Best Smart Scales (2025)


When comparing the latest models, look out for:


  • App compatibility: Choose scales that sync with Apple Health, Samsung Health, Fitbit, or Google Fit for easy tracking.

  • Multiple user profiles: Great if you share with a partner or family.

  • Wi-Fi or Bluetooth connectivity: Sends data to the app automatically, no phone-in-hand required.

  • Accuracy: Look for bioelectrical impedance analysis (BIA) for reliable fat/muscle readings.


Best Smart Scale Brands to Consider


Top-rated and widely trusted smart scale brands include: Renpho, Withings, Eufy, Fitbit, Anker, and Omada. These brands consistently rank for accuracy, app design, and Bluetooth stability, all things that make daily tracking simple and stress-free.


How to Get the Most from Your Smart Scale


  • Weigh yourself at the same time each day (ideally morning, before eating).

  • Step on barefoot so sensors can measure body composition.

  • Don’t obsess daily, use the weekly trend graph in your app instead.

  • Pair readings with your food and side-effect journals to spot links between nutrition, hydration, and results.


Used alongside your GLP-1 medication and healthy habits, smart scales help you see the progress you can’t feel yet, the hidden wins behind every small loss.


TL;DR


Smart scales don’t just measure your weight, they measure your journey. They show you fat loss, muscle gain, and hydration shifts that normal scales miss. For anyone on Mounjaro or Wegovy, they’re one of the easiest, most rewarding upgrades you can make.

Are Smart Scales Worth It When You’re on Mounjaro or Wegovy?


Let’s be honest, stepping on the scale can feel like a mini heart attack. You brace yourself, look down, and hope it’s moved. But if you are using Mounjaro or Wegovy, your body is changing in more ways than that one number can show.


Smart scales don’t just tell you what you weigh — they reveal what’s going on underneath. Things like body fat percentage, muscle mass, bone density and water weight, the kind of data that shows real progress even if the number on the scale stalls.


Many GLP-1 users find this helps shift the focus from “How much have I lost?” to “How is my body transforming?” You will see your muscle hold steady while fat drops, or notice how hydration affects your readings, and that keeps you motivated when regular scales don’t.


Plus, most models sync automatically with Apple Health, Samsung Health, or Fitbit, so your stats track themselves in the background.


We have rounded up the top-rated smart scales on Amazon for 2025, chosen for accuracy, app quality, and real-world usability.

Photo of Nick Mitchell, founder of Pen Hub
Nick M

Published:

7 Oct 2025

Updated:

8 Oct 2025

Best Smart Scales for Tracking Weight Loss (2025 Top 10 Guide)

Shopping Guides

Person standing on smart scales
Black smart digital scale with red LED display, circular sensors, and smartphone app showing body composition tracking.

RENPHO Smart Scale

RENPHO

6K+ bought in past month

average rating is 4.5 out of 5, based on 372381 votes, Ratings
Customers say: Simple, reliable, and great for the price. Most users say the RENPHO Smart Scale is accurate, easy to use, and pairs quickly with its app. The Bluetooth connection works smoothly, and people like how effortlessly it syncs data to other health apps. It’s considered excellent value for money, though a few mention theirs stopped working after a while, overall, a solid budget pick that does exactly what you need it to.

Bluetooth

RRP £35.99

£19.99

Black smart scale with circular silver sensors, connected to smartphone and smartwatch displaying body weight and fat data.

INSMART Smart Digital Scales

INSMART

5K+ bought in past month

average rating is 4.4 out of 5, based on 31526 votes, Ratings
Customers say: Good quality and feature-packed for the price. Most users say this smart scale feels solid, pairs easily with their phone, and the app offers loads of helpful data. It’s well-rated for value, though accuracy gets mixed feedback, some find it spot on, while others notice readings that fluctuate more than expected. Overall, it’s a decent mid-range choice if you want plenty of features without paying premium prices.

Bluetooth

RRP £23.89

£20.30

Black glass digital bathroom scale with red LED display and smartphone app showing body composition data.

HomeFashion Smart Scale

HomeFashion

3K+ bought in past month

average rating is 4.4 out of 5, based on 3247 votes, Ratings
Customers say: Simple, clear, and good value overall. Most users say this smart scale looks great, feels sturdy, and has an easy-to-read display. It’s generally praised for being good value and straightforward to use, though experiences vary, some say it connects and tracks perfectly, while others report the app can be a bit temperamental. Accuracy feedback is mixed too, but for everyday use, it gets the job done.

Bluetooth

RRP £12.99

£12.99

Sleek black digital smart scale with connected app showing 3D body model and health metrics, includes measuring tape accessory.

eufy Smart Scale

eufy

500+ bought in past month

average rating is 4.4 out of 5, based on 17784 votes, Ratings
Customers say: Stylish, detailed, and great value for the price. Most users say the Eufy Smart Scale looks sleek, sets up in minutes, and connects flawlessly through Bluetooth. The app gives plenty of insight without feeling overwhelming, and many rate it as good as (or better than) pricier brands. A few mention the odd inconsistent reading, but overall it’s praised for offering premium performance at a far friendlier price.

WiFi & Bluetooth

RRP £54.99

£29.99

Pink digital scale with LED “HEY” display and app integration via smartwatch and smartphone.

Ovutek Smart Scale

OVUTEK

400+ bought in past month

average rating is 4.7 out of 5, based on 957 votes, Ratings
Customers say: Customers find the scale to be of brilliant quality and easy to set up. They appreciate the app's informative features.

Bluetooth

RRP £29.99

£20.98

Black high-end digital smart scale with full-colour display showing weight and data syncing via Wi-Fi.

Garmin Index S2 Smart Scale

Garmin

200+ bought in past month

average rating is 4.1 out of 5, based on 2728 votes, Ratings
Customers say: Looks great, but not without quirks. The Garmin Smart Scale wins points for design and build quality, it looks sleek and feels premium. The app integration works smoothly for many users, though some find setup a bit hit or miss. Accuracy and price divide opinion; a few say it’s reliable, while others feel it doesn’t quite justify the cost. A stylish option, but maybe not the most consistent performer.

WiFi

RRP £128.96

£128.96

Blue digital scale with handheld electrodes and LCD display for full-body analysis.

OMRON Body Composition Monitor

Omron

200+ bought in past month

average rating is 4.2 out of 5, based on 9498 votes, Ratings
Customers say: Easy to use and packed with the basics. Most users find this smart body scale simple to set up and good value for money. It’s popular for tracking weight and body fat over time, especially for general health or fitness goals. Accuracy reviews are mixed, some say it’s spot on, others find readings vary a little, but overall it’s a handy, budget-friendly option for everyday progress tracking.

No App

RRP £101.79

£101.79

White digital body composition scale with handle and LED display, showing detailed metrics like body fat, BMI, and muscle mass alongside app and smartwatch integration.

arboleaf Smart Scale

arboleaf

100+ bought in past month

average rating is 4.5 out of 5, based on 1401 votes, Ratings
Packed with data for people who love detail. The Arboleaf Smart Scale goes all in, measuring everything from body fat and muscle to water, protein and even body age. The handheld sensors give a more complete read than standard foot-only scales, and the large LED display shows key stats right on the screen, no constant app checking. It’s ideal if you like having the full picture of your progress or share your scale with others who are tracking their own goals.

Bluetooth

RRP £89.99

£64.10

Premium blue smart scale with colour screen and smartphone app displaying detailed body composition and trend data.

WITHINGS Body Smart

Withings

100+ bought in past month

average rating is 4.2 out of 5, based on 38190 votes, Ratings
Customers say: Sleek, smart, and built to impress. Most users say the Withings Smart Scale feels high quality and is easy to set up, with an app that makes tracking progress simple. Some mention the data feels super accurate, while a few note occasional connection hiccups or slightly inconsistent readings. It’s definitely on the pricier side, but for many, the design and overall experience make it feel worth the spend.

WiFi & Bluetooth

RRP £89.95

£69.95

Minimalist black digital scale with four silver sensors and small display showing body weight.

NUTRI FIT Smart Scale

NUTRI FIT

50+ bought in past month

average rating is 4.2 out of 5, based on 50 votes, Ratings
Customers say: Accurate, attractive, and surprisingly advanced for the price. Most users say this smart scale looks great, feels sturdy, and offers far more data than they expected for the cost. The companion app gets a thumbs-up for being simple and insightful, making it easy to track changes week by week. A few reviewers mention Bluetooth issues or readings that seem slightly off, but overall, it’s praised for its quality, value, and the motivation it gives to keep an eye on progress.

Bluetooth

RRP £9.99

£8.99

Black smart digital scale with red LED display, circular sensors, and smartphone app showing body composition tracking.
RENPHO Smart Scale

RENPHO

£19.99
Most Purchased
Pink digital scale with LED “HEY” display and app integration via smartwatch and smartphone.
Ovutek Smart Scale

OVUTEK

£20.98
Top Rated
Minimalist black digital scale with four silver sensors and small display showing body weight.
NUTRI FIT Smart Scale

NUTRI FIT

£8.99
Lowest Price

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