Too many screens
Menus, builders, feeds, and prompts get between the lifter and the only numbers that matter during a set: weight and reps.
Offline strength tracking
Open. Lift. Log. Compare.
RepFast is a yellow-and-black gym-floor logger built around one promise: capture the set in under 10 seconds, even when signal is gone and the next plate decision is already due.
RepFast
Set 4/5
Bench Press
Weight
225 lb
Reps
6
Previous: 225 lb x 5. Ready offline.
2:30Rest timer
+8%Volume delta
LocalStorage mode
Previous set loaded225 lb x 5 ready before the next attempt
+8%
The gap
Most workout apps get soft when the set gets hard.
RepFast skips social feeds, coaching clutter, login walls, and spreadsheet views. It is a serious logging instrument for the exact moment when the lifter has shaky hands, poor signal, and no patience for navigation.
Signal-dependent
A basement gym should not break the log. V1 stores sessions locally and treats offline as normal.
Spreadsheet thinking
History is useful later. During a workout, the app should answer one question fast: did this beat last time?
Product idea
The 10-second log loop.
Open, lift, log, compare. RepFast remembers the last values, keeps controls oversized, starts rest automatically, and turns the result into a plain performance verdict.
Open to active lift
No home feed. No signup wall. The next planned exercise is already on screen.
Confirm defaults
Weight and reps prefill from last time. Most sets need one tap.
Start rest timer
Logging a set starts the clock and keeps the next action visible.
Compare instantly
The payoff is not a chart hunt. It is a simple today-vs-last-time answer.
Real gym moment
Heavy bench set. Chalky hands. Bad signal. One decision before the bar gets loaded again.
The lifter racks 225 after a hard sixth rep. RepFast opens straight to Bench Press, shows 225 x 5 from the last session, lets them bump reps to 6 with one thumb, and immediately says volume is up.
One-handed logging with 56px controls.
Offline-first storage when gym Wi-Fi drops.
Instant comparison before the next load call.
First-version mobile app
Yellow-black gym mode, built for low light and tired hands.
V1 stays narrow: offline workout logging, previous-set defaults, oversized weight and rep controls, auto-rest timing, and a compact performance card.
RepFastSet 4/5
Bench Press
Weight
225 lb
Reps
6
Previous: 225 x 5. Defaults loaded locally.
Rest timerNext set
Rest before set 5
1:22remaining
Target rest2:30
Next weight225 lb
Last top set225 x 5
Timer starts automatically when the set is logged.
SummaryOffline
Today moved forward.
Volume delta
+8%
Best set improved. Total session volume is up without adding extra exercises.
New bench PRRoadmap
MVP first. Power later.
01
Offline MVP
Local workout history, exercise list, previous-set defaults, log button, auto-rest timer, and today-vs-last-time card.
02
Optional sync
Cloud backup becomes opt-in after the core loop is trusted. The gym-floor experience remains offline-capable.
03
Settings and lift utilities
Kg/lb preference, rest-duration insights, plate calculator, optional RPE, and simple progression prompts that do not clutter the logging screen.
04
Wearable and voice logging
Later input modes for chalky hands and phone-free sets, only after the manual loop is fast enough to beat paper.
Positioning
RepFast is the anti-clutter strength tracker.
No signup, no social feed, no coaching clutter. Open, lift, log, compare.