they are working together. supermemo.com is based on the same algorithm but is designed to be more mainstream (no advanced stuff like incremental reading & hard

they are working together. supermemo.com is based on the same algorithm but is designed to be more mainstream (no advanced stuff like incremental reading & hard to make your own cards).You can buy high quality language courses there(no need to make all the cards). I have both since supermemo.com has an app for the phone.