In reply to Duncan Campbell: Hi Duncan
I agree to a certain extent as personally don't see them replacing the book, but a full set of definitive guides to North Wales will cost nearly £300 when Gogarth South and NW Limestone come out!
The technology is new, and more and more people take smart phones climbing with them. However for instance the Slate guide is already out of date thanks mainly to Ian Lloyd-Jones, and I am already updating the routes in the app to cover those new additions when we offer a free update.
There are limitation to the platform, for instance, I don't think I'll ever put Lliwedd in the app, due to the limits to the topo size. But there are things you can do with a database driven guide on a phone that are impossible with a book.
In reply to the andriod market, we choose to launch on the iPhone market as owners have been shown to be more likely to pay for the apps. The android version is on its way, so we haven't forgotten about them, it was just a strategic decision when it came to launching the app.
I think Mkean is right about the single Platform as well, app development on the iPhone has a very good set of free generic tools, that make navigating apps more intuitive, simply because they have standardised buttons.
Anyway I should be working on the update. Thanks for your interest.