Brevent is described as ', black prevent, can app-standby (since Android 6.0, not supported on some devices) or force-stop apps without root, prevent apps from running in long time'. There are four alternatives to Brevent for Android and Android Tablet. The best alternative is Greenify, which is free. Other great apps like Brevent are SuperFreezZ (Free, Open Source), Drowser (Free, Open Source) and Killapps (Freemium).
Never should your phone or tablet become slower and battery hungrier after lots of apps installed. With Greenify, your device can run almost as smoothly and lastingly as it did the first day you had it!