Harder, better, faster, stronger. More than just a beloved Daft Punk cut, those four words are a mantra for many exercise enthusiasts to push themselves to their absolute limits. In fact, it’s not too different from the Olympic motto, “Citius, Altius, Fortius,” which translates to “Faster, Higher, Stronger.” With the digital revolution, all kinds of data points are now at our fingertips to help further push the boundaries of our own personal records. But while Apple Watches and FitBits can provide metrics around splits, there’s never been a device dedicated to solely understanding every aspect of an individual’s unique running experience, and then going a step further and helping them improve. That is, until now.