Initial Capital and Open Ocean Capital led the $2.5 million extended seed round for San Francisco-based mobile app development tools provider AppGyver, a statement about the funding said.

Proceeds from the round will be used for AppGyver's sales and marketing efforts. It will also be utilized for research and development to find ways to integrate with the cloud services. AppGyver intends to give neophyte and experienced mobile developers with toolsets that will enable them to build, test, preview and launch their "fully functioning HTML5 mobile apps that are indistinguishable from native counterparts," the statement said.

Initial Capital's Kristian Segerstrale said in the statement, "We are big believers in the growth of the application ecosystem. AppGyver has an impressive track record as a unique technology- and service-enabler, helping more services rapidly create and deploy beautiful, native-feeling apps across multiple devices as their front ends."

In August last year, AppGyver introduced Steroids, its platform for app development. From that time, over 10,000 apps have been created on it. The users of Steroid range from freelancers to startups to those large Fortune 500 firms like AT&T, Accenture, Cisco Systems, BBC, Groupon, IBM, SAP, Salesforce, Deloitte and Dell. The range of companies point to the increasing adoption of AppGyver to build data-driven apps, the statement said.

Through the Steroids platform, developers can make quick and responsive mobile apps which are based on HTML5. The apps will also have native-user interface elements like tabs, animation, navigation, transition, windows and drawers. Developers are then able to make completely native apps through HTML, JavaScript and CSS, the statement said.

Open Ocean Partner Michel "Monty" Widenius said in the statement, "Developers need access to tools that allow one to do mobile apps which have a native look and feel, and where the same code can be run on multiple platforms. AppGyver provides this in an easy-to-use way. Could one ask for more?"