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, rep, and RPE straight to your device — 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.
Browse every program free · enroll with Pro
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.
Apple Watch companion
Start the workout on your phone and your current set follows you to your wrist. Glance at the weight and reps, tap Done to log the set, and let the rest timer run — no phone in hand mid-set.
Everything else, dialed in
The small things that make logging fast and your data honest.
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, drop, and top-set-with-backoff schemes, generated to match how you actually train.
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.
Exercise library
Dozens of lifts with clean illustrations, step-by-step form cues, and your running history for every one.
Machine variant tagging
Tag the exact brand and model you used, so your 'machine chest press' isn't one blurry number.
Your history, kept safe
Free and fully offline forever. Sign in to back up and restore. Go Pro for hands-off sync across every device.
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.
Coming soon to iOS & Android
GoLightWeight is in the final stretch. Free to download, no account required to start.