Method 1: Sideloading via AltStore or Sideloadly (Computer Required)
Because it is a modified app, you cannot download it from the official App Store. You typically need to the IPA file using one of several methods: Requirements Sideloadly / AltStore Computer + Apple ID ipa apps me watusi
How to Install Watusi on iOS: The Ultimate Guide to Enhancing Your WhatsApp Experience Method 1: Sideloading via AltStore or Sideloadly (Computer