Robbie Cape

With key partnerships in place with the likes of Dell Computer and T-Mobile, Seattle  startup Cozi has been adding roughly 20,000 new family members per day.

“Things are literally on fire,” said CEO Robbie Cape in explaining the recent growth of the online calendar and family scheduling service. Now, the company is getting a little more fuel in the tank.

Cozi just landed $3 million from its existing Asian partner, money that brings total funding in the company to $24 million. Cape declined to name the investor, but said that the firm has continued to be impressed with the company’s growth rate.

The new money will be used to support the company’s premium service, known as Cozi Gold. Launched last August, the product offers an ad-free version of the service. Earlier this month, Cozi added the ability to publish more than one calendar and

“Basically, this funding gives us the ability to continue innovating around the Gold offering, so you will continue to see more and more functionality that shows our fanatical focus on families,” said Cape, adding that the premium service costs $4.99 per month.

Cozi comes pre-installed on Dell personal computers as well as T-Mobile Android handset.

Another big driver of the Cozi business is the growth of the service on mobile phones and tablets.

“I can’t tell you exactly how many sign ups we are doing on the Kindle Fire and on the Barnes & Noble Nook, but the number would blow your mind,” said Cape. “And mobile just continues to grow at a very, very strong pace.”

Cape — who previously ran the Microsoft Money business — founded Cozi in 2005. It employs 37 people, and is currently adding developers and marketing professionals.

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