dingster, do you have a link? I searched the marketplace but couldn't find it. I found a few apps that do something similar, but are either costly ($4 for Profile Whitelist for example); or, they have weird permissions (write contact data when it just needs to read the list? fine gps but no gps features?)
I basically need a whitelist call/text app with a scheduler function, just like the OP. A few numbers permitted through but all others silenced during certain hours. Even though most of the calls are through google voice I can't set up an away time as my schedule changes.
I suppose in the meantime I'll dig around tasker to see if I can set something up, or use one of the manual apps for the time being.
Edit: I'll take a risk and am going to try out Profile Call Blocker. It's profile based and seems to tie into Google calendar (where I keep my schedule), which would be awesome since I don't have a standard schedule. Most of the permissions seem OK, though it's fairly new and if they wanna charge me $6 for it if I need more than the single profile in the trail, then meh. At that point I'd rather go with Profile since at least they tell you what each permission does.