In reply to lex:
> Surely anyone will know where South, or what time it is, and can work it out by pointing their head in the direction of the route.
That's an interesting point, and it goes back to how people let technology take over what they should be able to do in our heads. How many of us haven't felt a guilty twinge as we've reached for the calculator, knowing in our hearts that we should (and could!) do the sum in our heads!
The sun-seeker app is a little more complicated though (I confess I haven't yet tried it, but I can see the potential application). How accurately can you point out South from where you're sat right now? Within 5 degrees? 10 degrees? 20? And then how accurately can you guess the orientation of a given wall (of a building or a cliff) in your field of view? And do you know at what time the sun-sets today?
The point is that you pays your money, you takes your choice. Richard Hall obviously likes Sun Seeker enough to pay his money, and seems happy enough!