I love the design of Sunrise, but the slowness of the app and network refresh infuriates me. Been using the Google Calendar app this morning, and love the instantaneous sync.

Sunrise was relegated to the fourth screen on my iPhone immediately.

Yeah. Calendars are something I only look at when I need to immediately do something. Any lag kills the uX.

I was going to say the exact same thing. Been waiting for an official Google Calendar for iPhone but then I found Sunrise.

Loving the calendar+tasks hybrid view. It even resizes as you interact with either so you can fully make use of the available the screen estate. One can say it's "Touch-Responsive Design".