With more and more touchscreen smartphones now equipped with a GPS chip, all you need is a navigation app to turn your phone into a veritable pocket satnav. Sounds easy doesn't it? But with so many different apps out there, choosing the right one can seem like a minefield. That's why we'll be putting them through their paces to help you pick the best apps around!

Following the recent disappearance of Sony, Navman and ViaMichelin, only a handful of brands are left currently competing on the GPS market--but that doesn't stop them from offering a whole range of models.