>"We make analyzing a rental property so easy Grandma can do it!"

There are lots of grandmas who are engineers, scientists, doctors, and inventors. There are plenty of ways to land that message without carrying forward the spirit of 1950s Madison Ave. Plus, that copy doesn't tell anything about the product, it's fluff.

"Analyze deal potential without leaving Zillow"

"Automatically analyze rental properties as you browse"

"View critical deal metrics as you browse"

etc