Do I need to create an account? April 24, 2020 18:48 Updated No, an account is not required for using Smart Thermometer. Related articles Is the Yummly app free? Do I need to use the Yummly app with the Smart Thermometer? Where can I download the Yummly app? Updating your iOS device Is the Smart Thermometer microwave, pressure cooker, steam oven, slow cooker, or Instant Pot safe?