Your private harm-reduction companion.
PartyWise is an app for iPhone, iPad and Apple Watch with evidence-based information to help you understand risks, spot red flags and make safer decisions.
Substance profiles
Effects, risks, timelines and reference ranges from published harm-reduction sources, in a non-judgmental, easy-to-read format.
Interaction checker
Select up to five substances to check for known risks and interaction details before you combine anything.
Private by design
No accounts, no cloud syncing and no tracking. Everything you enter stays on your own device.