Freedom to install/use is one of those cases where the web beats apps, hands-down. Check out devdocs.io in your browser for a free alternative. Works just fine

Freedom to install/use is one of those cases where the web beats apps, hands-down. Check out devdocs.io in your browser for a free alternative. Works just fine on mobile, too. I love it, and after hooking it up to Alfred, I can search 90% of my commonly-needed docs with a single interface.