It is established that it is russian and hypothesized that it is a spyware. Personally I include in spyware all apps that "only collect metadata" or only do "personalized ads" because for me it is equal with spying almost by definition. And people like Bruce Schneier have the same opinion (2).
Schneier has, imo, lost a fair amount of credibility over the past few years by starting almost every analysis with the maximally uncharitable assumptions. This became most clear when he reported on completely false claims that Facebook was monitoring WhatsApp messages at the client.
Not that I've used it myself but has this been established as fact now?