Swimming can be a lot of fun. If you swim competitively, you could always use a smart coaching system to help you improve your technique and go faster. Hydropacer can help. It is an iPhone based LED trainer that guide you through your workouts. You just have to follow the lights and focus on your technique to push yourself in the best way possible. There is a library of workouts for you to rely on to get better.
Whether you want to improve your speed, build strength in your body, or focus on conditioning, the Hydropacer can help. The virtual coaching system suggests workouts and guides you with visual feedback. Users have the option to create custom workouts. Like what you see? The project is now on Kickstarter.