Coronavirus quarantine timer. It was built on a weekend and made available during the covid-19 pandemic, from March 23 2020 to March 15th 2021.

Transmission by fomites was eventually found to be uncommon, so the quarantimer probably didn't accomplish much beyond helping some people's peace of mind. In all it was used by 173 people, to track 401 objects.

Implemented in Haskell using the servant webserver, the code is available at