On yer bike: Hammerhead satnav for cyclists – just don't look down

Turn-based strategy for the mapless in motion

Review Cycling an unknown route can be tricky. Either you have to keep stopping to check the map app in your pocket or, if you have your smartphone strapped to your handlebars, you have to take your eyes off the road in order to peer the screen. You also have to decide whether to leave it on for the whole journey, running the battery down, or stop and turn it on when you reach a junction."