They make up their own score
My FICO score is 750 which is excellent but Credit Karma has my score at 608 which is poor. Luckily the banks dont go by Credit Karmas score but if youre looking for accuracy this isnt the app for you. Theyll give you a complex and youll pull your hair out trying to get your score up using their standard.
Jake Y. about
Intuit Credit Karma, v3.5