The COVID-19 Exposure app for NY State was just announced and released.
Apple: https://apps.apple.com/us/app/covid-alert-ny/id1524123298
Android: https://play.google.com/store/apps/details?id=gov.ny.health.proximity
Apple: https://apps.apple.com/us/app/covid-alert-ny/id1524123298
Android: https://play.google.com/store/apps/details?id=gov.ny.health.proximity