VACCINE PASSPORT AND 4 PCR TESTS REQUIRED TO ENTER SINGAPORE FROM SOME COUNTRIES
"You’ll need to take four COVID-19 tests. That includes one COVID-19 two days before departure, one on arrival, one test on day three, and one test of day seven. And yes, that’s even if you’re fully vaccinated."
"You’ll have to agree to download the contact tracing app in Singapore"
traveloffpath.com/singapore-begins-reopening-to-vaccinated-travelers/