Your Gym. Your Data. No Signal Required.
GoLightWeight logs every set offline-first, runs proven strength programs, and catches every PR the moment it happens — then backs up to the cloud when you sign in. Built for lifters who want their numbers, not a feed.
Built for Serious Lifters
Every detail tuned for the people who actually load the bar.
Every set, even with zero signal
GoLightWeight writes every set and rep straight to your device — RPE too, if you choose to track it — so logging is instant and works deep in the basement gym. Tag the exact machine you trained on, and never lose a session to a dead connection.
Run 5/3/1, Madcow & more
Twenty-three proven programs, from novice linear progression (StrongLifts, Starting Strength, GreySkull) to Wendler's 5/3/1 in five flavors, weekly 5×5 like Madcow and the Texas Method, and size work from PHUL to German Volume Training and a bodyweight routine. GoLightWeight loads each day's exact sets, reps, and plate-rounded weights, then advances your training max from the lifts you actually hit.
Every program included — free. No Pro required.
See every gain
Track your Big 3 total, volume trends, and per-lift strength with a live estimated-1RM line — all charted from your own log. A muscle-balance radar and PR timeline show exactly where you're growing.
Deeper panels — muscle map, training heatmap, body composition — unlock with Pro.
Log from your wrist
The companion app mirrors your live workout: the current exercise, its set list, and the weight and reps you just logged. Complete a set from the watch and the rest timer starts on both — a countdown ring on your wrist with a haptic when it ends, so your phone can stay in your bag.
Apple Watch companion included — no separate purchase.
HIIT & Tabata timer, built in
Prep, work, and rest intervals with round-by-round tracking and audio cues that sound even with your screen locked — the same beeps count down the final seconds of every rest between sets. Tabata and EMOM presets are ready to go, or dial in your own.
A muscle map for every exercise
Hundreds of lifts with clean illustrations, primary and secondary muscles shaded on an anatomical figure, step-by-step form cues, and your full history for each. Names and muscle classifications follow NSCA standards, and muscle and equipment filters stack so you find any lift fast.
Everything else, dialed in
The small things that make logging fast and your data honest.
Plan workouts ahead
Lay out a session ahead of time and edit it with the exact controls you use mid-workout — then start it when the day comes, already built.
Import a past workout
Rebuild today from any day you've logged — expand a session, pick just the exercises you want, even across several dates, and they land in the order you tapped.
Automatic PR detection
The instant you beat your max weight, single-set volume, or estimated 1RM, GoLightWeight catches it and celebrates — no manual logging.
Smart sets
Pyramid, reverse pyramid, drop, top-set-with-backoff, and last-set AMRAP — generated to match how you actually train, on any lift.
Plate calculator
See exactly which plates to load per side, pre-filled with the set's working weight. No mental math between sets.
Goals that track themselves
Set strength, weekly-activity, or bodyweight goals and watch each progress bar fill — straight from your own records.
Share a finished session
Turn any workout into a stats card, a detailed breakdown, or plain text — every exercise and set included. Save the card straight to Photos.
Machine variant tagging
Tag the exact brand and model you used, so your 'machine chest press' isn't one blurry number.
Cardio, logged too
Log runs, rows, and rides with time, distance, and pace — your conditioning lives in the same history as your lifts.
Your history, kept safe
Free and fully offline forever — every program, every logging feature. Go Pro for unlimited daily workouts, deeper analytics, and hands-off sync across your devices.
On device
Everything works offline. No account, no signal, no excuses.
Cloud backup
Sign in with Apple or Google to back up and restore your full history.
Auto-sync
Continuous background sync keeps every device in lockstep — hands off.
Now on the App Store
Free to download, no account required to start. Android is on the way.