Best-in-class turn-by-turn sat nav without buying a dedicated device? That's the idea with TomTom's new Android app.

Why buy a sat nav when you can change your phone into one? Here's why...

With iOS 6 and the furore over Apple Maps, more people will be looking for an alternative mapping solution. If you chose to use the TomTom sat-nav app, is this iPhone hands free car kit worth the outlay?

The TomTom Via 135 boasts voice recognition and maps for the UK and Ireland, but does it offer truly hands-free sat nav?

The TomTom Start 60 Europe throws the best bits of sat navs into a bigger screen, while keeping the price at a reasonable level.

Excellent navigation functionality - if you can bear Jeremy Clarkson's jokes

Affordable connected sat nav shows rivals how it should be done

As affordable sat navs go, they don't come any better than this

TomTom's impressive LIVE Services get squeezed into a less impressive form factor

The sat-nav market is becoming a very crowded place, and the quality of hardware has rocketed in the last year. Gone are the poor quality boxes with screens like Casio calculators. The market is now awash with internet-connected iPhone-like creatures, with decent processing and a host of options.

TomTom's latest motorbike sat nav tested

Slim, smart, powerful and packed with useful features, it's simply the best in class at what it does, but you have to pay for the privilege

TomTom's entry level sat nav gets premium features

Nice and easy does it with this new entry-level sat nav

TomTom's feature-packed sat nav helps to avoid traffic jams

A loud and bright sat-nav device

Everyone knows that satnavs are cheap as chips these days, with examples available online for a good deal less than £100, something that makes the arrival of the £449.99 TomTom GO 940 Live more than a little surprising.

TomTom may be king of the satnavs, but its crown it also prone to slipping occasionally - as we discovered during our supertest in May. Then the TomTom GO 920 Traffic proved competent enough but lacked any real killer features that separated it out from the rest of crowded satnav market. Indeed we concluded that the Garmin nuvi 770 had a better balance of features. That now looks to have changed

It's hard to get away from TomTom's Go series of satnavs - in fact they're almost as popular in the UK as Apple's ubiquitous iPod. Given that, what's so special about this flagship model that will make you want to upgrade? TechRadar has the answer