V-safe

V-safe is a smartphone-based tool that uses text messaging and web surveys to provide personalized health check-ins after you receive a covid-19 vaccination, in the US.

''V-safe is a smartphone-based tool that uses text messaging and web surveys to provide personalized health check-ins after you receive a COVID-19 vaccine. Through v-safe, you can quickly tell CDC if you have any side effects after getting the COVID-19 vaccine. Depending on your answers, someone from CDC may call to check on you and get more information. V-safe will also remind you to get your second COVID-19 vaccine dose if you need one.''

External

 * CDC.gov, V-safe after vaccination health checker