Self-report daily.
Help slow the outbreak.
Identify those at risk sooner.

First calculations of symptomatic COVID in each area across the UK
See how your area is affected

Thank you for joining millions of people to support scientists at King’s College London in helping our health services.

The information you give us is essential to understand COVID-19. We take the trust you've granted us very seriously and have rigorous steps in place to ensure your information is secure. This is why public health and other authorities are working with us. We are also working hard to improve the app based on your feedback. This is a non-profit initiative so please bear with us.

Dr. Tim Spector, research lead

Professor of Genetic Epidemiology at King’s College London and Director of TwinsUK

Read the press release from
King's College London


Take 1-minute to self-report daily, even if you are well.

Help our scientists identify:

  • High-risk areas in the UK
  • Who is most at risk, by better understanding symptoms linked to underlying health conditions
  • How fast the virus is spreading in your area

COVID Symptom Tracker in the press

About this research

By using this app you're contributing to advance vital research on COVID-19. The app will be used to study the symptoms of the virus and track how it spreads.

This research is led by Dr Tim Spector, professor of genetic epidemiology at King’s College London and director of TwinsUK a scientific study of 15,000 identical and non-identical twins, which has been running for nearly three decades.

The COVID Symptom Tracker was designed by doctors and scientists at King's College London, Guys and St Thomas’ Hospitals working in partnership with ZOE Global Ltd – a health science company.

We take data security very seriously and will handle your data with huge respect. Your data is protected by the European Union's "General Data Protection Regulation" (GDPR). It will only be used for health research and will not be used for commercial purposes. You can read more about how your data will be used, your rights and the steps we take to ensure it's protected in our privacy policy or in the Frequently Asked Questions.

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Collaborating on the science

If you're doing research on COVID-19 and you want to contribute or believe this initiative can help your efforts, please let us know at [email protected]

Please contact us only if you're a public health organisation, government, academic, scientific, research or health institution or charity.