Do antivirus apps detect malware apps? As reported in the links below, there are malicious apps on Google Play. 

Would android antivirus apps like Avast or AVG detect malicious apps that Google Play missed? Has it ever been document or have you experienced a situation where an anti-virus app detected a malware app?

PS Is there a database somewhere where all known malicious apps ever reported are documented so people can search to see if they have them on their phones?


Link 1
Link2
Android doesn't need anti virus (unlike Windows) but of course it is vulnerable to malware and Trojans. See Is an antivirus really needed for Android?
So the so called anti virus apps have to block things like malware,adware etc, otherwise there isn't any reason for them to be used. If you see the Play Store  description of both apps you mentioned in your question, they do block malware. I haven't used them to confirm from first hand experience but the logic and Play Store description holds
AFAIK there isn't a publicly available database of malicious apps and companies create / update and use their own databases. After all that's the only differentiator