The developer released a new version of dfndr security on Aug 23, 2019 and over 100M users downloaded and set up the app. There are in-app purchases and advertisements in this application. The app is very popular among Samsung and Motorola users.
It's free to download the .apk file of dfndr security and you can check out users' reviews on Droid Informer. This application installer requires 13 MB of free space to run on Android 5.0 and higher.
Based on the users’ comments, you can get such advantages of the app as a simple UI, good performance and easy-to-use features. Some users are of the opinion that the weak points of this application are memory issues, lots of ads, screen freezes and a battery drain.