It is now available via a Launchpad PPA. For installation, go to a Terminal and run:
sudo add-apt-repository ppa:tldm217/tahutek.net
sudo apt-get update
sudo apt-get install apt-fast
sudo apt-get update
sudo apt-get install apt-fast
Once installed, you just need to replace 'apt-get' to 'apt-fast' in your command syntax for example:
sudo apt-fast update
sudo apt-fast upgrade
sudo apt-fast install package-name
sudo apt-fast upgrade
sudo apt-fast install package-name
If there is no noticeable difference in the speeds, make sure you've selected the best download server for your downloads. Take a look at the link below:
Select the best server for Updates and Installs