Would like to echo this feedback. To US residents the name strongly implies real estate.

For me, it was more the tagline than the name. "Rental empire" brings up ideas of acquiring more and more land to rent to peasants.

"Rentify" alone could be AirBNB, but it could also be Rent-a-Center. The right tagline would remove the ambiguity.

It probably needs updating, think this is a UK vs US English thing

I don't think it's a language thing so much as dedicated "hire shops" not being much of a thing in the US outside of certain touristy areas. Even then, they tend to be really low-budget operations that rely on foot traffic or hotel partnerships.

Maybe it doesn’t need ‘updating’, because British English isn’t a deprecated anachronism that needs to be patched and brought up to date, thank you very much.

I need to change the tag line to make it clearer internationally, and the product name because, as someone has pointed out, it’s actually already taken