A free app for Android, by Protocol Apps.
LapTrax is a world-first automatic, camera-based lap timing app for athletes, coaches, and RC vehicles, including vehicles/multirotors/quad/drones. This advanced lap timer is an indispensable tool for anyone involved in any form of competitive activity.
It's great for runners, swimmers, sports (hockey, soccer, etc), anywhere you run drills, training routines, sprints or races. It doesn't require transporters, GPS, or extra hardware.
It's a fully integrated lap timer for Android, which makes it easy to use for the many athletes, coaches, and parents who want to start keeping track of their performance during a workout. It's a great tool for runners who want to start training for a race, or for athletes who want to do a specific training program and measure its effectiveness.
It's also great for swimmers who want to start timing their laps, and for any athlete who needs to keep track of their performance during a training session or a competition.
It works on any device with an Android operating system (including tablets and Android-based mobile phones), so it can be used by athletes, coaches, parents, and parents who want to monitor their child's performance.