Will the launch of the Apple Watch spark the next app goldrush?

Apple's next big release is hotly anticipated by iPhone developers - and developers for Google's rival smartwatch operating system Android Wear too

Even before having used an Apple Watch, Daniel Breslan is pretty sure how people will use his app, Departure Board, on one. "When you're waiting in a station cafe, pub, lounge, you have you own personal departure board and you do not have to move to keep checking the screens on the platform," he explains. His new app, which is in the final stages of testing, is a simple concept: it finds the nearest rail station to you, and tells you the destination and time of the next 20 trains - though on a watchface, you'll probably only see three or four without scrolling.