I just wrote an app that will monitor the slush api and tells you when the pool finds a block.
It can optionally send push notifications to iOS/android via https://pushover.net

https://github.com/professoruss/blockfound

Let me know if you have any feedback or can find a cheaper push app (pushover is $4.99)

output looks like this:
Found new block!! Elapsed: 11:52:20 Hashrate: 879340.212GH/s