Help with map thing....

Okay, so before 343 had Halo, I looked at some app thing that showed each map and then it had colors on the map that represented where you were the most throughout all of your matchmaking games. I thought it was atlas but that isnt it. Does anyone know what it is I am talking about and the proper name for it?

Heatmaps?

I know Bungie.net had a heatmaps feature for Halo 3 & Halo: Reach.