There is a free version, which displays the expiration date of up to 3 miles and points programs. I use the $10/year version, which displays the expiration date of an unlimited number of programs. You can compare the differences here.
I just wanted to let you know that today, January 31, is the last day to lock in the $10/year price for AwardWallet Plus. Starting tomorrow, the price will rise to $30/year.