Fast Company 5th edition

A new baseline

Whether she wins that 24th Grand Slam Singles title or not, tennis star and venture investor Serena Williams is working tirelessly to keep her career in play.

Of all the gear that Serena Williams relies on to keep her playing at the top of her game, the piece of equipment she might value the most is Toggl, an app that helps her track her time, breaking down what percentage of each day goes into the three things that consume her most: her daughter, her business, and of course, tennis.