> Can you show me that contact tracing can make significant difference?
It’s a standard technique that has been successfully used for a long time. For example, it’s how smallpox was finally wiped out.
(This is a separate point to “does this particular app look suspicious?” to which I say “yes”).
> going by government figures (which I doubt somewhat), only under 1k people have died so far.
In India, which is doing the things you’re complaining about.
Meanwhile, the USA, which has less than a quarter of India’s population, has 65,605.
Are you familiar with exponential growth, or do you only ever see the word “exponential” used to mean “rapid” without the strict mathematical meaning?