Pangea posted this on their Facebook page, and it looks pretty awesome! It seems to be a pinball game that you can make your own games. They say there's a multiplayer mode too! Can't wait! Their web site just says "Coming Soon", but they have a preview video: http://pangeasoft.net/iphone/pinball/
Looks like it's finally out: https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=979075603&mt=8
I'm not sure if it really qualifies as "freemium" since there isn't really anything to buy. It appears to only have one in-app purchase option to remove the ads, but everything else seems to be included with the free game.