: The ability to hide your "Online" status, "Typing..." notification, and even those pesky blue ticks, all while seeing everyone else's.
: Since you have to download these apps from unofficial websites rather than the Google Play Store, there is a higher risk of downloading malware or "cracked" files that can compromise your phone.
: You can view "View Once" media an unlimited number of times without the sender ever knowing. The "Anti-Ban" Mystery