After 6 months of operation Outduo was shut down at the end of September 2016. Outduo failed to gain enough user traction and as a result I lost my passion for the project and development on version 2 of the webapp stalled.
I also released Outduo V1 before it was feature complete and was unable to add requested features in a timely manner to encourage faster user growth (and eventual paid subscriptions).
Thank you to the almost 100 users that gave Outduo a go. Your support and feedback was invaluable during early development.
Outduo may emerge again in some manner in the long-term future, but for now I'll be concentrating on other projects.
PS: Check out Exist.io. Exist connects to a heap of services, including Fitbit, and not only tracks all your data but also produces smart insights to help you understand your life.