"In Titanium 2.0, you're able to, for example, add a photo service to your app, which lets the user capture photos from their mobile device, and access them across multiple devices," Buckner says.

The 2.0 release with Appcelerator Cloud Services (ACS) is available now. Titanium Studio is free to download and use; the vendor offers subscription-based support, "premium integration," and other services for developers. ACS is free to start, but Appcelerator will charge for storage, API calls and push notifications.

Buckner acknowledges that estimating what these charges will be for a new customer can be a challenge, as the number of app users, and the way they use the app, change over time. Appcelerator is developing a set of metrics to guide developers in various vertical segments, such as retail or insurance or media/entertainment.

John Cox covers wireless networking and mobile computing for Network World. Twitter: http://twitter.com/johnwcoxnww Email: john_cox@nww.com Blog RSS feed: http://www.networkworld.com/community/blog/2989/feed

in Network World's Anti-malware section.