Movaya, a three-year-old mobile software company founded by Phil Yerkes and Stanley Wang, has been sold to Austin, Texas-based mobile commerce startup Digby. Terms of the deal were not disclosed, but Digby appears to be especially interested in the company’s Asian operations center in Chengdu, China.

That facility will now serve as the hub for Digby’s expanding business in Asia, with Movaya co-founder Wang joining the company as vice president of engineering. [Post updated with comments from Yerkes]

“Movaya is a pioneer in the mobile commerce ecosystem,” said David Sikora, founder and CEO of Digby, in a statementtoday. “Its storefront platform and team will significantly extend our current platform and overall production capacity.”

Movaya’s platform is used by software developers, game developers and publishers to monetize content on mobile devices. The system integrates with the billing systems of carriers such as Verizon, AT&T and T-Mobile.

Digby’s retail customers include drugstore.com, 1-800-Flowers.com and Wet Seal.

Movaya has also done some iPhone app development in recent months, including a $1.99 game designed around Hooter’s Calendar girls.

UPDATE: I just heard back from Movaya co-founder Phil Yerkes who tells us that the development team of 13 employees will join Digby. As for Yerkes, he recently took a job in Amazon.com’s Kindle group. Here’s more from Yerkes:

“The reason we sold now is that the combination of the two companies was really a good fit. We’ve been talking off and on for a long time and both companies complement each other and bring assets to the table and it was increasingly clear to me that scale was becoming critical for future success.”