Cash-back shopping Web site Ebates today acquired Redwood City, Calif.-based Shopular, which specializes in mobile shopping alerts, for an undisclosed amount.

Ebates, a subsidiary of Internet services firm Rakuten, described Shopular as “a mobile-product discovery app that is a consistent leader in user popularity and ratings” and is used by over one million consumers. Once the deal is complete, Ebates said Shopular will “introduce cash-back shopping to its users, complementing the Shopular user experience with Ebates’ popular loyalty offering.”

Shopular current app is a “proprietary geo-targeting technology [that] alerts users with relevant deals and coupons when users are near their favorite stores,” the companies said. Shopular was founded in 2012 by Navneet Loiwal and Tommy Tsai, who will stay on as general managers of the Shopular business.

Kevin Johnson, chief executive officer of Ebates, said Shopular is the “perfect partner to help us maximize our growth in the online and mobile commerce category. With today’s consumers going mobile, it’s more important than ever to provide the right technologies to help them get the best deals, at the right time, as quickly as possible. We believe that the addition of Shopular to the Ebates family is the next step to making this happen.”

Ebates plans to reposition itself in the mobile shopping category “by offering shoppers relevant deals and coupons directly on their mobile phones through Shopular’s powerful, proprietary geo-targeting capability.”

Loiwal, now general manager of the company he cofounded, said “we have always felt that joining the attractive Shopular product discovery experience with the trustworthiness of Ebates cash-back shopping would be a winning combination.”

Ebates currently has over 2,000 retail partners, located globally, and has mobile apps for iOS and Android in addition to a browser extension for desktops and laptops.