Stackmob eliminates API transaction fees, launches Marketplace with members including Apsalar and more

Cloud-based mobile application development platform Stackmob announced today that its eliminating API transaction fees. Instead, the backend-as-a-service-provider (BaaS) provider is charging developers by the services used, including third-party modules from other companies that are part of its new mobile Marketplace for API modules.

Stackmob allows mobile app developers to build, deploy and manage their apps, through integrating OAuth, social services, storage solutions, advertising, APIs, analytics and more. The San Francisco-based company will no longer charge their customers for its API creation and management service, which the company now believes should be free. Instead Stackmob will sell its service and third-party modules that developers can use to add functionality to their apps more quickly. Some enterprise features will be available to companies that need a more robust offering.

Stackmob is also launching a mobile marketplace for API modules, which brings together proprietary StackMob modules and third-party modules that can all be integrated in one click. That first batch of members in the Stackmob Marketplace are Apsalar,, Crittercism, datownia, inneractive,, PubNub, SendGrid, Tap for Tap, Urban Airship, UserVoice and iGeolise, with more coming in the future. Currently there’s 15,000 developers in Stackmob’s development community, who have made more than 40,000 apps using StackMob.

The San Francisco-based mobile analytics provider Apsalar will have its ApScience Analytics service as part of Stackmob’s Marketplace. Mobile app developers and marketers who use Stackmob can install Apsalar’s free mobile analytics SDK into their mobile apps, which provides in-app and campaign attribution analytics. On the in-app side, app developers and marketers can drill down into user behavior within their apps, using features such as cohort charts, funnel reports, audience segmentation and revenue and engagement analysis. On the campaign side, mobile app marketers and developers can attribute ROI from installs, user revenue and lifetime revenue (LTV), from all of their mobile user acquisition campaigns.

“The main idea for us is that the best-in-breed companies coming together to offer that end-to-end, holistic solution for mobile app developers and marketers, with everything from the development side to mobile measurement to monetization,” said Sarah Teng, director of marketing at Apsalar. “We’re definitely excited to be a part of that and hope to bring the value of Apsalar to more developers out there.”

In May 2011, Stackmob raised $7.5 million in a Series A funding round led by Trinity Ventures, Harrison Metal Capital and Baseline Ventures.