In reply to panyan:
I agree I used the new android version 2 weeks ago. No need to carry a heavy guide to the crag anymore (.though I would still buy the guide for the full info experience).
It worked pretty well on my small samsung phone but still a few teething troubles to sort out yet. i.e. The comments window didn't show up on my phone and the lines on the diagrams are pretty crammed in on some crags and hard to differentiate. However that's not a big issue as most of the routes have names painted on and the routes list gives all the other info you need.
Well done to Steve Golley, and Steve and Sue McDonnell at the Glaros. More money in the bolt fund means more new routes for next year!