The COVID symptom trackerKings College London have had a remarkable response so far – more than 2 million downloads – but their research into COVID-19, fatigue, the impact on those with existing disease and immunosuppression, and other symptoms, will be much improved if numbers can be increased with more patients joining.Click here to find out more and download the appThis is run by King’s College London and its spinout company Zoe – but the app is free.The researchers are working on the data and sharing with government so that resource planning and allocation can take place as they see the infection move across the country.