This is a well-known community for legacy iOS apps. They often host IPAs for older devices. Check MTMDev Archive.org:
file cannot be installed like a standard App Store app. It requires a computer and specific tools: Preparation whatsapp 2.18 80 ipa download
: Obtain the specific 2.18.80 file from a reputable archive site. This is a well-known community for legacy iOS apps
Official support for this version has ended, as WhatsApp now requires for its current releases. Users looking for this specific legacy .ipa file typically do so to run WhatsApp on older devices (like an iPad or an older iPhone) that cannot update to the latest iOS. whatsapp 2.18 80 ipa download