Strong
An app that logs your sets, reps and weights at the gym.
What Strong does
Strong is a workout log for the gym. You record each set, rep and weight in a few taps, and it remembers what you lifted last time. It has a rest timer, warm-up and plate calculators, and an Apple Watch app. Logging is free. Strong PRO removes the 3-routine limit and adds charts.
Strong does one job and does it fast: logging lifts. Start a workout, add exercises, and type in your sets as you go. Last session's numbers sit right there, so you know what to beat. A rest timer starts on its own after each set, and you can tag sets as warm-ups, drop sets or failure.
There's an exercise library with animated demos, and you can add your own exercises and routines. It's set up for classic barbell programs, with a plate calculator so you know what to load on the bar. Body measurements, notes and CSV export are in there too.
The free version lets you save unlimited workouts, but only 3 custom routines, and the progress charts need PRO. PRO is fairly priced, and there's a one-time lifetime option if you hate subscriptions. If you want a clean log and not a coach telling you what to lift, Strong is a long-time favorite.
Alternatives to Strong
Who it's for
Skip it if: Beginners who want the app to plan their workouts.
Pricing
Free planFree to log unlimited workouts, with up to 3 custom routines. Strong PRO is $4.99 a month, $29.99 a year or $99.99 once for lifetime access, and removes the routine limit and adds charts.
Prices can vary by country. Checked 19 Oct 2026.
What people like
- Very fast to log during a workout
- Unlimited workout history on the free plan
- Lifetime purchase option
- Built by a small team that's kept it going since 2011
Watch out for
- Only 3 custom routines on the free plan
- Progress charts need PRO
- No guided workouts or plans
Want a gym log that fits how you train? Build your own.
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Try this idea: “a simple gym log where I tap an exercise, type my sets and weight, and see what I lifted last time”
Questions people ask
Is Strong free?
Yes, for logging. You can save unlimited workouts but only 3 custom routines. PRO removes that limit.
How much is Strong PRO?
$4.99 a month, $29.99 a year, or $99.99 once for lifetime access, based on the US App Store.
Does Strong work on Apple Watch?
Yes. It has an Apple Watch app for logging sets from your wrist.
Strong or Hevy?
Both are great gym logs. Hevy's free plan is a little more generous and has a social feed. Strong is simpler and has a lifetime option.