Chronos: Your Watch. Smarter.

This app requires a Chronos device with an iPhone 4S or newer. Get your Chronos at wearchronos.com.

Meet Chronos. The affordable smart disc that attaches to the back of any watch. Chronos adds fitness tracking, music control, notification alerts, tap to find your phone, and more.

Chronos tracks your steps, walking + running distance, and active energy. Chronos fitness data syncs with the Health app.