I have premium, but the app prompts for me to login to Appstore? September 30, 2019This is caused be a periodic check for a valid purchase in the premium app. Should not happen very often! Related Posts:Voting list appGrosh app with improved barcode scanning via website lookupNext generation shopping list app enters beta testGrosh shopping list app overhaulFromto wish list app for AmazonGrocery app Grosh with improved list sharing