My experience of this App goes back about 2-3 years so will not be very relevant now perhaps

AVL (Antiy) have an excellent track record on AV tests...and for good reason.
I tried many different AV/AM Apps for my Android and AVL was my favourite in retrospect,and I did not find it heavy or intrusive like some other AVs..

It is worth me saying that,(at the time),AVL Pro was not AVL with additional features....AVL & AVL Pro were using completely different scanning systems,almost as though AVL was a continuous BETA for AVL Pro...

I have no idea whether this is still the case or not
I've found a Review that I posted for AVL (NOT AVL PRO) at the time (2-3 Years Ago):
"Strange!!! This app detected the smsreg gedma.a virus on my android but could not remove it!! Strangely this virus was not picked up by AVL Pro,nor was it detected by AVG,Avast,Lookout,Sophos,TrustGo,McAfee,Eset,Qihu 360,Dr Web v.9,or Malwarebytes.This leaves 2 possible conclusions.Either this app is superior to all of the above apps,including AVLs own pro version but lacks the ability to remove said virus,or this app is delivering false-positives for the gedma.a virus.Please advise"
I did get a Reply asking me to send logs,but by then I had moved on to testing other Android AVs.
Sorry that I cannot give you more recent feedback

...but any feedback is better than none

(I Hope)