Exercise 1No previous result on this phone
Free gym buddy · new prototype
Your workout.
A clock that pushes back.
Build one exercise or a giant set. Choose the time, rest, reps, and weight for every movement. RepLab calls the set, keeps the rest moving, and remembers what you actually lifted on this phone.
Build tomorrow’s workoutMore than a rest clock
It should feel like somebody is running the session with you.
- You build the full setAdd, remove, and reorder as many exercises as the workout needs.
- The clock calls the paceEach exercise gets its own set time and rest. Finish early or add time when needed.
- Your work gets loggedRecord the weight and reps during rest, then see the whole session at the finish.
Build the session
Make the clock fit the workout.
No account. Results stay in this browser. A plan link includes planned exercises, times, reps, and starting weights—but never your completed session.
Work
Set 1 of 3 · Exercise 1 of 2
First set. Own the pace.
Chest-supported row
Target 10 reps · planned 30 lb
40
Log this set
First set for this exercise todayNext: Hammer curl
The workout loop
Work, log, rest, get called back in.
The work clock counts down from the time you selected. Tap Set done if you finish early. Rest starts immediately, so you can enter or correct the weight and reps without losing track of recovery. RepLab then calls the next exercise and repeats the complete list for every set.
Your results belong in the free timer
Weight and rep logging are part of running a useful gym session. Completed sessions are saved only in this browser, and previous weights can help fill the next workout. RepLab Pro can later add cloud backup, cross-device history, long-term progress, reusable programs, exports, and coach-assigned sessions.
Plans share; completed results do not
Copy plan link deliberately includes the exercises, target reps, set and rest times, starting weights, and set count. It does not include completed weights, completed reps, or session history. Anyone opening a plan chooses whether it is appropriate for them.
The clock cannot judge the lift
You or your coach remain responsible for exercise selection, load, technique, equipment, space, supervision, and when to stop. A countdown and a voice cue are prompts, not personalized coaching. Read the RepLab fitness disclaimer.
Want a ready-made clock?