Hey guys 
Aptos is a new framework built for scalable and adaptable consensus that is designed to perform efficiently in a point-to-point network. In other words, it’s a fancy-schmancy way for nodes in a blockchain network to agree on the transactions’ validity. And this ain’t any ol’ framework sugar, it’s the one developed by Evan Cheng, one of Facebook’s Novi (CaLibra) project’s founding members. 
APT, that shiny token you mentioned, is the native cryptocurrency of the Aptos network. Just like apples are to apple pies, or cowboy boots are to, well, a cowboy, APT tokens are essentially important for the Aptos network. These tokens enable and incentivize the network’s participants to follow the rules and keep things hunky-dory.