It's russian spyware. Nothing else to be said.
Privacy
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Could you please elaborate a bit more ? I mean, the time is fast approaching when there probably wouldn't be a choice other than installing it in our phones.
Well, if it's likely to be mandatory wherever you are, may as well take the initiative and install it to test, instead of asking what, by your comment, sounds like a rhetorical question or an ad.
I wish to understand the cons of this app. I might as well uninstall many apps from my device. But I wish to execute an "informed decision".
Iirc, in Russia, companies must have participation of the state. And Russia inherited laws from the Soviet Union, has had autocratic tendencies even between the opening of the SU and Putin coming to power, and has worked with other dictatorships such as China, Cuba and Venezuela's. So it's easy to assume and expect there's state-issued spyware to monitor users.
It's more or less an assumption ?
Yes, though because primary sources don't live much in such places when they pose a risk to a given regime.