At one time SCAL worked with the Cricuts but there was a lawsuit that resulted in no new SCAL and Cricut interaction.
Those fortunate enough to have downloaded it before the lawsuit are still able to use it if they didn't update their Cricuts, which has been a good solution for those who already had SCAL.
I dragged my feet and didn't get SCAL while the getting was good. Kind of You snooze - you loose. Bummer. Wish I had acted quicker.