RepLock is a Mac app that locks your screen until you complete a set of push-ups or other configured exercises. It uses your camera to count your reps in real time, ensuring you stay disciplined. The app sits in your menu bar and counts down to when your screen takes over, displaying a fullscreen overlay that cannot be dismissed. This overlay activates your camera, which uses AI pose detection to track your body and count each rep. You can configure a queue of exercises with individual rep counts, and the app rotates through them automatically. Everything runs locally on your Mac, with no internet connection required, ensuring your privacy. RepLock is designed for those who need strict enforcement of their exercise routine, with a 14-day free trial available that includes all features. No account is needed, and optional online features will always be opt-in.