Android - Can I use two different mod versions of WhatsApp on the same Android?

Yes why not. Sure you can use two different modes on the same Android just follow these instructions. Go to the Settings app on your dual-SIM Android phone and find the Dual app or Parallel Space app settings. Tap it and select WhatsApp to enable dual app mode for the WhatsApp application. I am also using two whatsapp modes one is fm whatsapp and other is whatsapp business.