GPS to Optimize a Route?

Hello

I am looking for a GPS or iPhone applications that would allow me to optimize a route with about 25 addresses in the city (Toulouse).

Basically, I would just need to enter addresses A B C D E F G H .... and the GPS would optimize a route to minimize the distance between each point, so it wouldn't follow the order in which they were entered but the shortest route (e.g., A D B H F C E ...).

I have already searched on Google and found topics from a few years ago, but nothing that really provides what I'm looking for. I tell myself that in 2013 this kind of thing must exist, I can't be the only one looking for this, right?

Looking forward to your reply.

Best regards.