High knee claps, counted for you
Hold your phone in your palm, raise a knee and clap under it. KneeClap counts every rep with the phone's motion sensors, so you can keep your eyes up and your pace high.
How it works
No camera and no watch. Just the phone in your hand.

1Hold it in your palm
Screen facing your palm. A case with a strap or grip helps it stay put.

2Clap under your knee
Raise a knee, clap under it, switch legs. Not into clapping? No-clap mode counts the arm swing.

3Hear every rep
A voice counts along in your language, with a short spoken guide before you start.
Made for short sets at home
Private by design
Motion data never leaves your phone. No account and no ads.
Quick sets
30 or 50 reps, or 1 or 2 minutes. Pick one and go.
See your progress
Reps, pace and a weekly goal, stored on your device.
Eight languages
English, Tiếng Việt, 日本語, 한국어, Français, Deutsch, Español and Português (Brasil), for the app and the voice.

Premium, when you want more
Open workout keeps counting until you stop. Custom sets let you pick your own reps or minutes. Try it free for 7 days, then choose monthly, 6 months or yearly.
The quick sets stay free.

