If you mostly lift weights and train indoors, the best smartwatches for weightlifting and gym workouts are the ones with dedicated strength-training modes, automatic (or easy manual) rep and set tracking, and heart-rate sensors that hold up during short, intense efforts. Based on manufacturer specifications and published expert reviews, the standouts are the Apple Watch Series 10 and Ultra 2 for iPhone owners, the Samsung Galaxy Watch line for Android users who want body-composition data, and Garmin (Venu, Forerunner and Fenix/Epix) for lifters who want automatic rep counting and a detailed muscle map. Amazfit is the budget-friendly alternative. There is no single “best” watch—the right pick depends on your phone and how much strength detail you actually want.
[[AFFDISCLOSURE]]
- Look for a dedicated strength or "functional/traditional strength training" workout mode, not just "Other"
- Automatic rep counting is convenient but imperfect—expect to review and edit sets afterward
- Your phone ecosystem (iPhone vs. Android) matters more than any single spec
What actually matters for lifting and gym training
Cardio watches are judged on GPS accuracy and battery. Strength training is different—you’re indoors, moving in short bursts, and often gripping a bar. The features that separate a good gym watch from a merely capable one:
- A dedicated strength mode. Apple splits this into “Traditional Strength Training” and “Functional Strength Training.” Garmin, Samsung and Amazfit all offer a distinct Strength or Weights activity. These tune the calorie and heart-rate algorithms for stop-start effort.
- Rep and set tracking. Garmin and Amazfit attempt automatic rep counting from wrist motion; Apple and Samsung lean more on rest-period detection and manual set logging. None is flawless, so editing afterward is normal.
- Heart-rate handling during grips. Wrist-based optical sensors can lose signal when you clench a bar or dumbbell. A watch that pairs with an external chest strap over Bluetooth is a big plus for accuracy.
- Durability and fit. Titanium or hardened cases and a secure band survive knocks against plates and racks.
- Screen visibility and controls you can read mid-set without fumbling through menus.
Keep expectations realistic on the numbers: wrist devices estimate rather than measure. See our explainer on how accurate smartwatch calorie counts are before you treat the burn figure as gospel.
Comparison: gym and strength features at a glance
| Watch | Strength mode | Auto rep counting | Ecosystem | Notable extra |
|---|---|---|---|---|
| Apple Watch Series 10 | Functional & Traditional | Rest detection; manual sets | iPhone only | Deep app library, ECG |
| Apple Watch Ultra 2 | Functional & Traditional | Rest detection; manual sets | iPhone only | Titanium case, action button |
| Samsung Galaxy Watch | Weights activity | Rep counting on supported models | Android (best with Samsung) | Body-composition (BIA) reading |
| Garmin Venu / Forerunner | Strength activity | Yes, plus muscle map | iPhone & Android | Animated workouts, long battery |
| Garmin Fenix / Epix | Strength activity | Yes, plus muscle map | iPhone & Android | Rugged build, multi-day battery |
| Amazfit (e.g., Balance) | Strength activity | Yes on many models | iPhone & Android | Low price, long battery |
Feature availability varies by model and software version; confirm on the manufacturer’s product page before buying.
The best picks by user
Best for iPhone users: Apple Watch Series 10 or Ultra 2
Apple’s Workout app includes both Functional and Traditional Strength Training, and the enormous third-party app ecosystem (Strong, Gymshark and others) adds structured set logging that Apple’s built-in app doesn’t emphasize. The Series 10 is the mainstream choice; the Ultra 2 adds a titanium case, brighter display and a programmable Action button that’s handy for starting and pausing sets. If you’re new to the platform, our guide on setting up an Apple Watch for the first time covers the basics.
Best for Android users: Samsung Galaxy Watch
The Galaxy Watch is the natural fit for Android phones, and it pairs best with Samsung Galaxy devices for full feature access. Its standout gym feature is bioelectrical impedance analysis (BIA) body composition—an on-wrist estimate of body fat, muscle mass and body water that appeals to lifters tracking recomposition. Treat those readings as trend indicators, not clinical measurements.
Best for serious lifters: Garmin Venu, Forerunner or Fenix/Epix
Garmin’s Strength activity counts reps and sets automatically, lets you edit weights, and builds a color-coded muscle map in Garmin Connect showing which muscle groups you’ve trained over time—useful for balancing a program. Garmin also leads on battery, so you can go days between charges even with daily gym sessions. See how the brands stack up in our battery life comparison.
Best value: Amazfit
Amazfit models such as the Balance offer strength activities with rep counting and multi-day battery at a noticeably lower price. Third-party review coverage is thinner and the ecosystem less polished, but for casual gym-goers the core tracking covers the essentials.
How to track a lifting session accurately
For a full walkthrough across brands, see how to track a workout on a smartwatch.
Who should buy which
Match the watch to your phone first. iPhone users get the deepest strength-app selection with an Apple Watch; Android users get the smoothest experience—and BIA body composition—from a Samsung Galaxy Watch. If automatic rep counting, a muscle map and long battery matter most, Garmin is the strongest all-rounder regardless of phone. Budget-focused lifters should look at Amazfit.
Frequently asked questions
Can a smartwatch count reps automatically?
Yes—Garmin and many Amazfit models count reps and sets automatically from wrist motion, and Samsung supports rep counting on certain models. Accuracy varies by exercise: compound barbell moves track better than isolation or machine work, so plan to review and edit your sets afterward.
Is the Apple Watch or Garmin better for weightlifting?
Garmin generally offers more built-in strength detail—automatic rep counting and a muscle map—plus longer battery. The Apple Watch counters with a far larger library of third-party lifting apps and works only with iPhone. If you own an iPhone and like app choice, Apple; if you want the deepest native strength features, Garmin.
Do I need a chest strap for accurate heart rate while lifting?
Not required, but recommended for serious training. Gripping weights tightens the wrist and can disrupt optical heart-rate readings. A Bluetooth chest strap pairs with all the watches above and delivers more reliable data during heavy sets.
Are body-composition readings on smartwatches accurate?
Samsung’s BIA body-composition feature gives a reasonable estimate of trends but isn’t a clinical measurement—hydration, recent meals and exercise all shift the numbers. Use it to watch direction over weeks, not as an exact body-fat percentage.