The app automatically reminds you: - about tests for sexually transmitted infections; - about taking drugs for pre-exposure HIV prevention – PrEP; - about taking antiretroviral drugs in for HIV or hepatitis C (concealed and personalized reminders). Using the app you can: - establish contact with your doctor; - receive doctor’s prescriptions and test results; - receive appointments to visit a doctor or for blood collection. You can also enter test results in the application yourself so that the