Your client wants to be able to communicate with you? How dare they!
I'm not sure I understand why this is something you should be compensated for outside of the gig itself. Communication is a basic part of any business relationship.
You are a freelancer. Yes, that means you have the freedom to schedule your day. It does not mean, however, you can completely disappear and ignore your client's team just because you'd rather work at night. That's unprofessional.
_neil is right. Freckle is simple (you can track time without the hassle of creating a project) and powerful (the multiple ways you can see your data is awesome, especially the "pulse" screen) with great design (its very pretty). That said, there's more features I'd love to see, but they are constantly improving the product, so its only a matter of time.
I'm not sure I understand why this is something you should be compensated for outside of the gig itself. Communication is a basic part of any business relationship.
You are a freelancer. Yes, that means you have the freedom to schedule your day. It does not mean, however, you can completely disappear and ignore your client's team just because you'd rather work at night. That's unprofessional.