Have you had a chance to check out Google's web app for Gmail and Calendar on your Android device lately? Google is touting it as "a new and improved experience when you access Gmail and Calendar through the browser" of your Android device. Improvements include things like the user interface to make messaging on the go even easier, along with a "Floaty Bar" that makes common actions, like archive and delete, just one click away.
The reasons given for using the web app model are good ones: Google can introduce new upgrades and iterations of the product far more quickly, not requiring a whole new download for you, the user, each time there is a change. This should also equate to more frequent improvements. Also, Google can much more efficiently share code across multiple platforms, like in the case of a 90%+ code share between Android and iPhone.
If you haven't tried it already, what are you waiting for? Watch the video above, then give it a go on your Android phone. Then, let us know what you think!