On-demand massage app Soothe of Hollywood has raised a $35 million round to help it expand from 22 cities to up 50 by the end of the year.

The Soothe app allows users to schedule massages in their homes from a network of about 3,300 independently contracted massage therapists. Soothe charges $99 for a 60 minute massage.

Founded in 2013, Soothe’s on-demand massage business is growing quickly, said Soothe Chief Executive Merlin Kauffman.

“We are the biggest massage company in the on-demand space and we are the fastest growing massage company in the world,” he said. “In Q4 of 2015, our month-over-month revenue growth was between 23 percent and 31 percent.”

Soothe’s latest founding round was led by Riverside Company with participation from several of its former investors. Soothe raised a $10.6 million Series A round in August.

Technology reporter Garrett Reim can be reached at [email protected]. Follow him on Twitter @garrettreim for the latest in L.A. tech news.