For over a year now a friend of mine introduced GB whatsapp to me and i'm forever grateful. Unlike the original whatsapp, gbwhatsapp is awesome on all levels. Below are some of the features on gbwhatsapp you will enjoy if you decide to install.
Delete message for everyone after seven minutes.
Sometime ago the new whatsapp update introduced this feature but can only be carried out once the message hasn't be read within seven minutes it was sent. Gbwhatsapp can allow you delete such message even after the reciever has read it and also after days.
Themes
Yes, you can apply themes on gbwhatsapp! Awesome right? They have a gallery of themes waiting for you to explore.
Fonts
You can change your fonts also. Fonts lovers get in here already.
Lock whatsapp messages
You can lock each and everyone of your whatsapp messages. All you need do is go to settings and activate your password.
Hide messages
Discovered this one recently and i was shocked. Totally different from locking your message. Although this also requires a passcode but the difference is you get to hide it and messages from hidden chats are not visible unless you go there and check but it will notify you that you have a new message.
Download photos/videos from status
I laugh when people dm me and ask me to share a particular video or photo with them because with gbwhatsapp you can download it directly without anybody knowing.
Auto reply
Now this is my main reason for sharing this post. This for me is the most awesome feature im enjoying right now. Just updated and found this new feature.
So i went ahead to see how it works 
If you're already using gbwhatsapp and have some awesome features you want to share kindly use the comment section. If you need any assistance with activating the aboved mentioned features also comment. All photos on this post are screenshots from my phone.