Forces you to create an account to even use the app. Allegedly to "link a user account to their list of scanned products". Pretty clear they run analysis on their user data (people who scan this also scan that, people that got suggested this swap have been scanning other products of the suggestion's brand...). If they don't do all of that yet they will. And they'll sell the results of the analysis for $$. Don't be their guinea pig. Refuse mandatory account creation!