I'm evaluating Trigger.io currently for a new project. I've used phonegap on a couple large projects before, as well. For me, Trigger's best value proposition isn't the ease of development. For the average hacker the few extra steps you need to take to use Phonegap/Cordova aren't overly complicated and in the end you have a better idea of how everything fits together. If Trigger.io's main selling point is going to be "easier to use than phonegap" I think they may fall flat.<p>Where real value can be provided, however, is in providing turn-key modules that allow developers to drop in native controls to supplement their web applications. The biggest issue with hybrid mobile application development today is embedded webview performance, especially on older devices. Using a framework like Sencha works wonderfully for newer devices (it feels positively native on my iPhone 4s), but because they have to rely on javascript to fix elements and scroll certain sections on older devices, it ends up delivering a sub-par experience for those users (on older androids the scrolling performance is atrocious).<p>Trigger.io is currently offering API calls that allow you to drop in a tab bar and a navigation bar which are native components. These are the two elements in a mobile app that are most likely to require fixed positioning, so this frees the webview up to simply serve a normal web page with natural, native scrolling on all devices. This is essentially what Facebook is doing with their current app - fixed native navigation elements and scrolling UIWebViews. However, as we all know, Facebook's results have been less than satisfactory. They admit that this hybrid approach helped their developers iterate faster and be more productive, but instead of sticking with that strategy and figuring out clever ways to make it perform better, they've capitulated and are going full native.<p>If Trigger.io was able to solve that problem and make a hybrid HTML5/native app perform as well as any other native app, they would really have something there. My advice would be to figure out how to get UIWebViews to load faster and cache better, how to allow customization of native UI elements so that designers can deliver a unique, beautiful interface that scales across multiple platforms, and continue to provide best-in-class hooks into the native functionality on the leading platforms, such as dead-simple push notification integration. Focus less on competing with phonegap and more on solving the hybrid app problem.