Heuristic Evaluations:

Severity Rating:

0 = I don’t agree that this is a usability problem at all 1 = Cosmetic problem only: need not be fixed unless extra time is available on project 2 = Minor usability problem: fixing this should be given low priority 3 = Major usability problem: important to fix, so should be given high priority 4 = Usability catastrophe: imperative to fix this before product can be released

Sample:

Issue: Unable to edit one’s weight

Severity: 2

Heuristic violated: User control and freedom

Description: When you open the app you have to enter your weight. You cannot update it later. If someone made a mistake (or later lost or gained weight) there’s nothing they can do to modify it.