Setup
Pocket to first set. Seconds.
Pick your workout. Start instantly. Everything’s already set.
Smart weight memory
One-tap start
With or without Apple Watch
Every rep, timed. Every set, logged.
RepSense counts your reps and the tempo of each one on Apple Watch — or logs every set in one tap on iPhone alone.
Works with or without Apple Watch
Made for iPhone Duo
Automatic rep detection
Real-time tempo feedback
Recovery-informed training
Private by default
Why RepSense
Stop logging. Start improving.
Most apps record what you did. RepSense measures how you did it — and shows you how to do it better. Track. Analyse. Recover. Improve.
Train
Feedback during the set. Not after.
Your watch measures every rep and tracks tempo as you lift.
Automatic rep detection
Haptic tempo cues
Review
Spot the rep where performance shifted.
Every set gets a rep-by-rep breakdown: tempo balance, consistency, control.
Set-level insights
Fatigue detection
Improve
Progress isn't a feeling. It's a pattern.
Consistency you can see. Momentum you can build.
Progression signals
Workload trends
Recover
Train what's ready. Rest what's not.
Smarter recovery means stronger sessions, faster.
Muscle fatigue map
Training readiness
iPhone only
No Watch? No problem.
Everything works on iPhone alone. Log a set in one tap, rest on a timer that starts itself, and see the same progress, records and recovery as everyone else.
One tap per set
Weight and reps carry over from last time. Adjust with a thumb, then Log Set.
Rest that runs itself
The timer starts when you log. Logged by mistake? Undo stays there for the whole rest.
A target for next time
Hit your reps on every set and RepSense suggests the next step: "Try 100 kg × 8".
Add a Watch whenever
Pair one later and reps are counted on your wrist automatically. Nothing to set up.
New · iPhone Duo
Made for iPhone Duo.
Unfold it and your set sits beside the whole session: every exercise with its progress, and exactly what you lifted last time.
Two columns when there's room
History and summaries at a readable width
Your workout keeps going as you fold, unfold or rotate
Apple Watch
Your wrist runs the session.
Concentric, eccentric, and isometric phases — measured as they happen. Haptic feedback holds your tempo steady when the set gets hard.
Tempo you can feel
Haptic cues during the rep — not a summary after the workout. Maintain control when it counts.
Hands-free rep counting
No tapping. No logging. Every rep detected automatically. You stay in the set.
Designed to disappear
Essential data mid-set. Nothing else. No menus, no distractions, no decisions to make.
How it works
Three steps. Zero guesswork.
1
Load your session
Pick a template or build one. Last session's weights are already set. Lifting in seconds.
2
Lift with real-time feedback
Reps counted. Tempo measured. Haptics keep you on pace. You stay focused.
3
Know what's next
Performance data, recovery status, progression signals. Every session builds toward a better one.
FAQ
Quick answers.
What does RepSense actually measure?
Every rep's concentric (lifting) and eccentric (lowering) tempo, plus optional isometric holds. You get live pacing on the watch and a full rep-by-rep breakdown on iPhone showing consistency, control, and where fatigue changed the movement.
Do I need an Apple Watch?
No. RepSense works fully on iPhone: log each set in one tap, with rest timers, records, progress and recovery. With an Apple Watch, reps and tempo are counted on your wrist automatically, and you can switch to iPhone for any workout.
Does it tell me when to increase weight?
Yes. When you hit your reps on every set, RepSense suggests the next step on the set card ("Try 100 kg × 8") and you can apply it with one tap. It's based on your logged sets, so it works with or without a Watch.
Does it work on iPhone Duo?
Yes. Unfolded, the workout shows your set beside every exercise and last time's sets; History and summaries stay at a readable width. Your workout carries on as you fold, unfold or rotate.
Is my data private?
Completely. No accounts, no cloud sync, no social features. Your training data stays on your devices.
What do I need to use it?
An iPhone. Add an Apple Watch if you want reps counted automatically. On iPhone Duo, RepSense uses the larger inner display for a two-column workout view.