Grader vs. Analytics Score

Hey yall - I noticed a big discrepancy in my PT scores when grading my tests via the grader function on the 7sage app (from google play if that matters) vs when I use the actual website analytics page. The grader function usually shows a higher score than the analytics. Wondering if the grader function on the app is based off of old score conversions? or if my analytics page is not using the modern scaling (it says it does but not entirely sure)? Help! Thanks.