GBWhatsApp Developer adds new features in this app to make more special and interesting for new and exisiting users. There are a list of features with explain.
1: Anti-Ban(App developer adds these feature for account safe. Now users of GBWA easily use this app without account restriction)
2: Hiding Option(GBWhatsApp has amazing hiding features. You can hiding recording, hiding typing, hiding second tick etc)
3: Theme Support(This App has more then 700+ new themes, users do not need to download from third party option)
4: Wide calling option( In this option, you can add more than 8 people in video calling, voice calling, and also in group calls.)
5: Advanced file sharing option(original WhatsApp only allowed files up to 16MB, but in this app, users send files up to 50 MB in size)
If you want to know more features then click this link: https://whatsappinstalling.net/