You can enter your symptoms into the app by selecting the ‘enter symptoms’ button. You'll be asked a number of simple questions with ‘yes’ or ‘no’ answers. When you've answered the questions, you can check the summary of your answers before you submit this information to the app. The app will then tell you whether or not your symptoms mean you may have coronavirus (COVID-19). 

You can report symptoms up to 5 days in the past.