What about contact tracing apps?
Tracing won't work unless you know who was nearby each infected person. It's difficult to find that info unless a big portion of people are using a tracker app. Is that sort of thing happening where you are?
It's largely irrelevant though. As much as it may help a little, this just isn't manageable through contact tracing. While Singapore are being lauded for their CT approach, they've still largely been successful in their efforts due to social distancing (and a culture of widespread adherance), along with things like widespread testing, and effective govt. communication of data.
They just announced it's had 1M installs (in a country of 8.7M) in the last week.