WhatsApp GB, in essence, is an Android-based app and it was not a official iOS version. The reason behind this limitation is that, the WhatsApp GB is just a modified version of original WhatsApp and Apple restricted 3rd party app installations with strict rules inside their iOS ecosystem. Apple has different rules, and does not allow apps that are unofficial or modified versions of others to be uploaded to the App Store→ unlike Android where you basically download a.APK file from an external location.
Whatapp GB has seen available for just Android even 98% of its clients utilize it in the wake of downloading this mod application. While some users have attempted to install WhatsApp GB on iOS through methods such as jailbreaking, Apple actually expressly prohibits this practice and it poses major security risks. This creates a lot of risk for data breaches as jailbroken iPhones are easy targets for malware, which can give unauthorized access to the bad network. It is reported by a cybersecurity report of 2021 that jailbroken devices tend to get malware infection at an alarming rate, with a whopping 60% more than non-jail broken ones.
Also, then Apple App store will not list the modified app like Whatsapp GB and there is more chance to violates Whatapp terms of services which could get your WhatsApp account ban. In June 2021, WhatsApp Inc. reiterated that accounts found using unofficial versions like GB could be banned permanently which goes for both iOS and Android control"Hii MHD Ameen Here i Am!!
Well, for iOS users looking to add more features in WhatsApp, a few options are available like the official (limited) version of the app — known as Whatsapp Business or use 3rd-party apps from Apple's App store with limited customization but nothing close what GBWhatsapp has on account.
If you want to know about the existence and functionalities of GB WhatsApp then make sure that query and read how to use whatsapp gb efficiently.