RaceDay Triathlon Planner is a free iPhone app developed by William Hoolihan. Designed for triathletes, this app allows users to quickly create their race plan by using swim, bike, and run "pace" along with hydration and nutritional requirements. What sets this app apart is its integration of predicted weather conditions at the race location, allowing users to modify their race strategy accordingly.

With RaceDay, users can easily generate a concise race-plan PDF report in an elegant format. The app also offers the flexibility to create multiple plans by adjusting pace numbers and nutritional fueling inputs based on forecasted weather conditions. To further enhance race preparation, the app includes a Brick Training feature for users to validate their race plan.

RaceDay Triathlon Planner is a valuable tool for triathletes looking to optimize their race performance. By utilizing this app, users can ensure they are well-prepared and equipped to perform their best on race day. Say goodbye to hand-written race plans and take advantage of this convenient and efficient app to shave off valuable time in your next triathlon race.