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Strong and Hevy
This page names a difference only when it is real. It does not score a winner.
A private log. The set is written on the phone, then synced when you are back online.
A workout log with a social network and a separate coach product.
A logged-in account includes charts, warm-up sets, and unlimited templates. There is no upgrade.
Hevy publishes a free tier and a paid Pro plan.
Checking a set does not wait for the server. Finish saves the workout on the phone.
Hevy also logs workouts on the phone, including an offline workout on the watch.
No ad SDK. Workout data is not sold. Delete the account from Settings. It stays deleted for 45 days, and a login in that window restores it.
Hevy is a consumer app with an account, a social graph, and a paid plan.
No follow feed, likes, or comments. You can share one routine by email or by a link on this site.
Follow athletes, like and comment on workouts, and save their routines.
No Apple Watch app, no Wear OS app, and no Live Activity.
Apple Watch and Wear OS, including a workout that can run without the phone.
This site is the catalog, the guides, and a shared routine page. Logging stays on the phone.
A web app at hevy.com for routines, progress, and friends' workouts.
352 exercises with posters and steps. Most have video. A few, including Wall Sit and Weighted Front Plank, are posters only. Images do not fall back to the other sex.
Hevy markets 400+ exercises with demonstration animations.
Unlimited templates and folders. One starter routine is added once to an empty library.
Your own routines, plus a library of ready-made programs.
Volume, estimated 1RM, personal records, and a track record of kilograms lifted. No muscle heatmap.
Exercise charts, records, one-rep max, and muscle distribution charts.
After Finish, one workout and active calories can go to Apple Health or Health Connect when body weight is set.
Connects to Apple Health and Health Connect.
No RPE field, no progress photos, no body measurements beyond weight, no coach, and no AI program.
Hevy offers several of those, including coach tools and a social feed you can keep or ignore.