The third most popular free iPhone app in the U.S. App Store today is a mysterious productivity app that’s only available in Russian. That’s a pretty obvious red flag that something isn’t quite what it seems.

‘Sirius’ Pomodoro method app is not what it seems

AI chatbot apps from OpenAI, Anthropic, and Google usually take up the first three spots on the App Store’s most downloaded chart.

Recently, competition from the dating reality show Love Island has put both Peacock and the Love Island USA voting app in the top charts as well. Threads and Planet Fitness are also doing well with downloads this week.

But on Friday morning, a random productivity app called Cириус broke into the top three.