Si is an messaging app that helps people with a sexual transmitted infection to inform their former sexual partner(s) in an informative, non-judgemental and discreet way.

The Sustainable Development Goals are a UN initiative to ensure healthy lives and promote well-being for all at all ages, with a need to fully eradicate a wide range of diseases and address the many different persistent and emerging health issues.

The app will only be used in cases where one has tested positive on sexual transmitted infection testing and find it hard to inform former sexual partners, and what information to give. Si is aimed for teenagers between 16 and 20, where numbers shows that there has been a growth in sexual transmitted infections. The goal is to focus on the importance of informing one's sexual partners about possible STI, and play a part in lowering the number of STIs with the necessary information needed. The app will help you to automatically generate a message to the receiver that will inform him or her about the STI, what this involves and how to get treated.