Two honest facts up front. First, Apple's own Workout app on the Watch is the best cardio tracker most people will ever own, and it's already installed. Second, no lifting app is good on the Watch, because logging a set on a 41mm screen mid-workout is slower than pulling out your phone. The apps that "support Apple Watch" mostly mean heart rate and a mirror of what's on the phone. That's fine. Just know what you're buying.
Built in: the Workout app
Outdoor run, cycle, swim, HIIT, Functional Strength Training and about eighty others. Heart-rate zones, custom intervals, auto-pause, and everything lands in Health and the Fitness app instantly. For anything measured in time and heart rate, don't download anything.
For lifting: apps with a real Watch app
Strong
The quickest way to log from your wrist: open the routine on the Watch, tick sets as you go and let the rest timer buzz you back under the bar. It records exactly what you tell it and nothing more, so it suits lifters who already have a program and just want the numbers written down without taking the phone out.
Skip it if you want demos, programming, or any kind of advice. Strong has opinions about nothing.
Strong's Watch app is the one people actually use: start the workout on the phone, log sets from the wrist with the crown, rest timer taps you when it's time. Hevy's is close behind and also runs standalone.
Hevy
A full Watch logger on the free tier, which is rare. Start a routine on the wrist, log sets and rests there, and the session syncs back with your heart rate attached. If you are deciding between Strong and Hevy for Watch use alone, Hevy costs less per year and gives more away for free.
Skip it if you want the app to write your program. Hevy Trainer on Pro helps, but it's a template builder, not a coach.
Fitbod
Fitbod picks the exercises for you, and on the Watch it shows today's workout set by set so you can follow it without the phone. Useful if you want the app to decide what to do; less useful if you already follow a program, because it will keep changing the session.
Skip it if you have a plan you like already; you'll fight the generator constantly.
Fitbod's Watch app mirrors the phone and captures heart rate; Jefit adds a Watch app on the Elite tier.
For classes
Apple Fitness+
The deepest Watch integration on this list, because Apple builds both: your heart rate, calories and ring progress appear on the class video in real time. Strength classes are dumbbell-based and follow-along, so it is a great fit for home workouts and a weak one for tracking barbell numbers in a gym.
Skip it if you train with a barbell or want a logbook. It's television for exercise, done very well.
Where GymAdapt stands (we're the ones writing this)
No Watch app yet. What you get instead: the live workout on your iPhone lock screen and in the Dynamic Island (current exercise, set, rest countdown) so you can glance without unlocking, and every session pushed to Apple Health so it counts on the Watch's rings. If a Watch app is a must, pick Strong or Hevy today. If you want the plan and the adaptive weights and can live with the phone on the bench, that's us.
How to track a lifting session on Apple Watch properly
The Watch is very good at heart rate and time, and only rough at telling what you lifted. Set it up for what it measures well and let your phone or a lifting app handle the sets and weights.
- Pick the right workout type. In the Workout app choose Traditional Strength Training for barbell, dumbbell and machine work, or Functional Strength Training for circuits and bodyweight. The choice changes how calories are estimated.
- Start it when you start your warm-up, end it when you leave. Rest periods are part of the session; pausing between sets makes your averages look better than they were.
- Log sets somewhere else. The built-in app does not record exercises, weights or reps. A lifting app on the phone or Watch does, and that is what tells you whether you are getting stronger.
- Use heart rate to time rests on hard sets. Starting the next heavy set once your heart rate has dropped back to roughly where your warm-up sets sat is a simple, personal alternative to a fixed timer.
- Check the summary in the Fitness app afterwards. Duration and average heart rate are the useful numbers week to week.
| What the Watch shows | How much to trust it for lifting | Use it for |
|---|---|---|
| Heart rate | Good during steady effort; can lag in short, heavy sets | Rest timing, session intensity |
| Active calories | Rough. Strength-training calorie estimates vary widely between devices | Comparing your own sessions, not food math |
| Duration | Exact | Spotting sessions that are creeping too long |
| Reps and weight | Not recorded by the built-in Workout app | Use a lifting app |
The short version: Watch for effort, app for progress. If you only use one, use the app, because the numbers that predict strength gains are the weights and reps.
Questions people ask
What is the best Apple Watch workout app for lifting?
Strong has the most-used Watch app for logging sets from the wrist, with Hevy a close second. Fitbod and Jefit (Elite) also have Watch apps.
Does GymAdapt have an Apple Watch app?
Not yet. GymAdapt shows your live workout on the iPhone lock screen and Dynamic Island and syncs completed workouts to Apple Health, which updates your Watch rings.
Do I need a third-party app on Apple Watch for cardio?
No. Apple's built-in Workout app covers running, cycling, swimming, HIIT and dozens more with heart-rate zones and intervals.
Which workout app works with Apple Watch for free?
Apple's Workout app is free. Nike Training Club is free and integrates with the Watch. Hevy and Strong have Watch apps on their free tiers.
Not on your wrist yet. On your lock screen already.
GymAdapt keeps the current set and rest timer in the Dynamic Island and writes every session to Apple Health.
Get GymAdapt on the App Store → Free to start. Pro is $4.99 a month or $24.99 a year (7-day free trial), or $59.99 once for lifetime. iPhone only.