Workout log for Android
Log every set.
Just stay focused.
JSF fills in what you did last time, so a set is one tap. Your workouts, your schedule, your rules. Faster than a notes app.
- No account
- No ads
- Works offline
Logging
Last time, already filled in
Every set starts with the weight and reps from your last session. Did the same? Tap the check. Did more? Change one number.
- Weighted, bodyweight (with added weight), assisted and timed sets
- Big inputs and a number pad, made for the gym floor
- A done set locks, so a stray tap can’t change it
Rest timer
A rest timer you’ll actually feel
It starts when you check off a set and tells you what’s next. When the rest is over the phone vibrates until you stop it, even with the screen locked.
- −15 s / +15 s while you rest
- Rest time set per exercise
- Notes for the band, the grip, how it felt
Your program
Your workouts. Your schedule.
JSF never tells you how to train. Build your own workouts, put them in a weekly plan or a rotation, and Home tells you what’s on today.
- A rotation waits for you: miss a day and Pull is still next
- Change anything mid-session, then choose: just for today, or update the workout
- 140+ exercises for calisthenics and bodybuilding, plus your own
Insights
See the work add up
Workouts, sets, time trained, sets per muscle and your personal records, for any period. History shows every session on a calendar of trained, planned and rest days.
- Week, month, 3 months, a year or a custom range
- Filter by muscle or exercise
- Personal records, marked New when you beat them
Set up once. Then just train.
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1
Build your workouts
Exercises, target sets and rest. Push A, Pull A, Legs, whatever you do.
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2
Set your schedule
Weekly days or a rotation. Rest days included.
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3
Log in one tap
Open today’s workout, check off each set, feel the rest end.
Your data stays on your phone.
No account to create, no server, no tracking, no ads. Export your data any time and restore it on a new phone.
Read the privacy policy
Coming soon on Google Play
JSF is in testing on Android. iPhone comes later. Want to try it before everyone else?