Smartwatches have evolved into much more than simple timekeepers — they’re now powerful fitness companions designed to keep up with even the most active lifestyles. In 2025, the fitness-focused smartwatch market is more competitive than ever, with brands offering a wide array of advanced features like blood oxygen monitoring, ECG tracking, sleep stage analysis, GPS accuracy, and even AI-assisted coaching. Whether you’re training for your next marathon, managing your sleep cycles, or trying to close those daily rings, the right smartwatch can give you the data and motivation you need to level up your fitness game. With so many options out there, choosing the perfect one can be overwhelming — so we’ve rounded up five of the best smartwatches for fitness tracking in 2025, each offering a unique blend of design, features, battery life, and performance.
Apple Watch Series 10
The Apple Watch Series 10 is the gold standard for smartwatches in 2025, especially for users deeply integrated into the Apple ecosystem. With a refreshed, slimmer design and the largest display ever seen on an Apple Watch, the Series 10 is as stylish as it is functional. It packs a suite of cutting-edge health features, including an upgraded ECG sensor, blood oxygen monitoring, and — new for 2025 — sleep apnea detection. The advanced health tracking works seamlessly with the updated watchOS, offering in-depth analytics for workouts, heart rate zones, sleep patterns, and recovery times. The new S10 chip improves performance while extending battery life, and the fast-charging capability ensures you’re back on your wrist in under an hour. With its intuitive UI, seamless integration with Apple Fitness+, and safety features like fall and crash detection, the Series 10 continues to set the benchmark for what a fitness smartwatch should be.
Specs:
•Display: 2” Always-On Retina LTPO OLED
•Health Sensors: ECG, Blood Oxygen, Heart Rate, Sleep Apnea Detection
•Battery Life: Up to 36 hours (Low Power Mode)
•GPS: Dual-frequency precision GPS
•Compatibility: iOS only
•Price: ~£369.00
For an up to date price check here!
Samsung Galaxy Watch6 Classic
The Samsung Galaxy Watch6 Classic blends premium design with top-tier fitness tracking features, making it a favorite among Android users. It brings back the beloved rotating bezel, giving users a satisfying, tactile way to navigate through apps and data. But the real strength lies in its health and wellness tools — including comprehensive sleep analysis, continuous heart rate monitoring, body composition scanning, and advanced workout recognition. With over 100 exercise types supported and auto-detection for popular activities like running, cycling, and swimming, it’s a truly smart assistant for your fitness journey. The Watch6 Classic also includes fall detection and emergency SOS, making it ideal for solo workouts or outdoor training. Battery life comfortably spans a full day, and fast wireless charging gets you back up and running quickly. Paired with the Samsung Health app, it offers one of the most complete health-tracking experiences available.
Specs:
•Display: 1.5” Super AMOLED (Always-On)
•Health Sensors: ECG, Bioelectrical Impedance Analysis, Sleep Tracking
•Battery Life: Up to 30 hours
•GPS: Multi-band GNSS
•Compatibility: Android
•Price: ~£289.00
For an up to date price check here!
Garmin Venu 3
Garmin continues to lead the way in multisport and fitness-first smartwatches, and the Venu 3 is a standout in 2025. It’s designed for users who prioritize fitness above all else, offering detailed metrics that go beyond simple step counts or calorie tracking. With built-in workout animations, strength training insights, and sleep coaching, the Venu 3 is like having a personal trainer on your wrist. Garmin’s signature GPS tracking is ultra-precise, making this watch ideal for runners, cyclists, and hikers. It also includes a heart rate monitor, pulse oximeter, and HRV (Heart Rate Variability) tracking to provide an in-depth view of your body’s performance and recovery. One of the highlights is its impressive battery life — lasting up to 14 days in smartwatch mode and around 26 hours in GPS mode. If you’re serious about training, the Venu 3 offers the data you need to improve, with none of the fluff.
Specs:
•Display: 1.4” AMOLED Touchscreen
•Health Sensors: HRV, Pulse Ox, Sleep Coach, Stress Tracking
•Battery Life: Up to 14 days (Smartwatch Mode)
•GPS: Built-in GPS with SatIQ
•Compatibility: Android & iOS
•Price: ~£332.00
For an up to date price check here!
Fitbit Sense 2
The Fitbit Sense 2 remains a top choice for health-conscious users looking for deep insight into their stress, sleep, and daily wellness patterns. Its clean, lightweight design makes it easy to wear 24/7, and Fitbit’s revamped interface in 2025 has made it more intuitive and user-friendly than ever. The Sense 2 excels in wellness tracking — it includes a cEDA (continuous electrodermal activity) sensor that helps detect stress responses in real time. It also monitors heart rate variability, skin temperature, and blood oxygen levels, making it great for people focused on holistic health. Fitness features include automatic workout detection, real-time pace and distance via connected GPS, and active zone minutes to encourage optimal cardio intensity. Battery life averages around 6+ days on a full charge, making it a reliable pick for anyone who prefers not to charge every night.
Specs:
•Display: 1.58” AMOLED
•Health Sensors: cEDA, HRV, SpO2, Skin Temperature
•Battery Life: Up to 6+ days
•GPS: Connected GPS (via smartphone)
•Compatibility: Android & iOS
•Price: ~£178.99
For an up to date price check here!
Amazfit GTR 4
If you’re after premium fitness tracking features without the premium price tag, the Amazfit GTR 4 is a powerful contender. With a beautiful always-on AMOLED display and aircraft-grade aluminum alloy frame, it looks far more expensive than it is. The GTR 4 supports over 150 sports modes and uses Zepp’s BioTracker 4.0 PPG sensor for 24/7 health monitoring, including heart rate, SpO2, and stress levels. One of the most impressive features is its dual-band GPS, which provides pinpoint accuracy even in urban or wooded environments — a huge bonus for runners and outdoor athletes. The battery life is a major selling point: up to 14 days of use on a single charge. Paired with the Zepp app, the GTR 4 delivers powerful insights with an intuitive interface, all at a wallet-friendly price. For value and versatility, it’s tough to beat.
Specs:
•Display: 1.43” AMOLED (Always-On)
•Health Sensors: Heart Rate, SpO2, Stress, PAI
•Battery Life: Up to 14 days
•GPS: Dual-band, 6 satellite systems
•Compatibility: Android & iOS
•Price: ~£199
For an up to date price check here!
Final Thoughts
Finding the best smartwatch for fitness tracking in 2025 means looking beyond basic features like step counting or heart rate monitoring. Today’s top models offer a comprehensive suite of health tools — from sleep stage tracking and stress monitoring to advanced workout analytics and even medical-grade sensors. Whether you’re a dedicated athlete or someone just starting their fitness journey, there’s a smartwatch that fits your routine, lifestyle, and budget.
If you’re already deep in the Apple ecosystem, the Apple Watch Series 10 is hard to beat. It pairs sleek aesthetics with cutting-edge fitness technology, offering features like ECG, blood oxygen monitoring, and seamless Apple Fitness+ integration. For Android users or anyone who prefers a classic design, the Samsung Galaxy Watch6 Classic delivers a polished experience with strong fitness tools, an intuitive rotating bezel, and compatibility with a wide range of apps and devices.
The Garmin Venu 3 stands out for athletes and adventurers, offering some of the best GPS accuracy, robust performance insights, and battery life you can find in a fitness watch. Meanwhile, the Fitbit Sense 2 continues to appeal to wellness-focused users, combining stress tracking, sleep insights, and mindfulness features in a lightweight, accessible package. And if you’re looking for serious performance without spending a fortune, the Amazfit GTR 4 is an impressive underdog — offering high-end features like dual-band GPS and VO2 max estimates at a mid-range price.
Each of these smartwatches excels in different areas — so your choice should come down to your fitness goals, smartphone compatibility, and desired features. Whether it’s accurate heart rate data for interval training, recovery metrics for endurance athletes, or all-day health monitoring to encourage a more balanced lifestyle, investing in the right smartwatch can be a game-changer for your overall well-being. In 2025, wearable tech is no longer just about convenience — it’s about empowering users to take control of their health and make smarter choices every day.
