Mod APK is an Android package that has been modified in order to offer a lot more than the regular version of a particular application. It's a way for users to enjoy all the premium features of their favorite applications without having to spend money on the original version. These features include unlimited game currencies, extra support, access to paid versions, and much more.
The disadvantage of mods is that they aren't secure. You can get infected by them, which may cause damage to your device. Additionally, modded Apksunny.com don't have automatic updates which can cause problems with your device. Therefore, it is best to avoid installing modded APKs on your device.