I had Athletic mode set as a setting for a long period of time. I recently realized this and turned it off.
Online it correctly changed all previous body fat percentages with the new algorithm, but on the app it simply set the latest weigh ins to non athletic mode leaving previous body fat percentages at the lower number, showing a huge upward spike. It would be best if online data and the app were in sync.
This is regards to the ios Health Mate app version 4.5.7.