It is common for the most downloaded and famous applications to have their "parallel version", that is, that hacked or altered by users or companies that intend to sell advertising or obtain private data from those who use it. For these reasons, it is not recommended to use them.
WhatsApp Plus is one of the modified versions of the messaging service owned by Facebook and, according to its creator, it is an “improved update” of WhatsApp since it can be customized.
One of the features that this app has altered, is the possibility to choose between 700 templates and templates to change the original appearance of the messenger.
Also available with more emojis, which can be resized.
It also has a "hidden mode" that allows you to select the time and date you want contacts to display, even if you have normal activity in the app. The double tilde can also be uninhabited, among other options.
Beyond that WhatsApp Plus is not safe as the official application, according to data provided by download websites, it has been downloaded by millions of users to this day.
It should be taken into account that this type of applications developed by third parties violate the rules of the original messenger. In the conditions of the WhatsApp service it is clearly and expressly stated that altered applications are not supported, since they do not validate their security practices.
For this reason it should be considered that WhatsApp decided to suspend accounts that use unofficial versions, such as WhatsApp Plus or GB WhatsApp, so users of these will most likely receive a message of temporary suspension of service for their accounts.