Enable anonymous notifications of positive stds results.

It could work like this, for example. Introduce an option to request to be notified if a given person reports a positive std result. This could be reinforced by asking the other person to agree (otherwise it could be technically possible for a person to continously monitor the std status of another person without them knowing, by regularly requesting notifications from only one person) . This permission could have a limited duration - perhaps chosen by both. In case of a positive result, the person could choose report it to grindr which would then anonymously notify people immediately and then keep no record of it.