I've had a copy of Helios for a while now. It's good, but it's always seemed a little over complicated. Enter DaylightCal. The interface, while pretty, is a little fussy. Not an entire deal breaker, but having the location lookup fail every third time the application launches. That's a bummer. I understand that it's more complicated since they're also referencing weather information as well, but still. I can't help but to come away from it feeling it was still mostly betaware. Hopefully they'll get the functionality a little more reliable in coming versions.