This app does not contain any viruses. I used Virus Total and yes, it flagged with 5 different anticiruses including google. But they are false positives. Because ransom uses popups (the images that can be in front of most of the apps.) Trojan Viruses and real Ransomwares use that too, thats why most of them flagged it with Trojan. Also it uses Battery Optimization so it can run infinitely, that's why they flagged it too so don't worry it does not contain any viruses.