the Fitbit mobile app
July 8 update: Performance and location detection improvements
This is a paid app. After a 1 hour trial, this app costs $2.99 (one-time purchase). You will not be charged until you authorize the purchase.
Easily view sunrise, sunset, and lunar phase on your Fitbit Versa, Versa Lite, and Ionic smartwatch. Beautiful, simple display of position of sun. Swipe to view moon phase and moon illumination.