I use that used to be brilliant on the first phone I downloaded it to, I had to do a reset and re-downloaded it, now it shows me places 4000 kilometres away as my nearest site and can only be done when online which worked offline before.
I thought it had only downloaded the free one so I contacted them and they say I have the paid one, but it is different.
I think I'm going to buy the APP as it includes Aires AND campsites, and you can download the complete map to use offline, which is great for those moments when you've no internet when travelling. At 3.99 why would you want to buy the Aires book ? (I bought the French and Holland one) The Holland Aires book alone was £12.50