This is a big blow to many Android OS users since GBWhatsapp was only available for use on Android devices only but was downloadable from the official Google Play store, users could only install by side loading the apk file.
Many features will be missed including hiding blue ticks (read receipt) to the recipient yet sender could see their blue ticks, hiding second ticks, hiding status view, hiding typing status, freezing last seen, scheduled status updates, automatic responses, customised themes, sending HD quality media files, status updates of up to 7 minutes, sending up to 100 attachments while sharing media and many more customisations. Some of the above features meant that you could read someone’s message and they could not notice as they will still be seeing one tick and your last seen would be stuck in the past, so you would not be under pressure to reply to some people. Only reply when you wish to.