Well there are certain application which I usually want to use all the time but unluckily you will not find the applications of all those on the App Store. But still for the convenience of the iPhone users Google has provided the web application for the most of their services which are really good if operated under good internet connection. One of the options is to create the shortcut of those web applications on the Safari browser so that you can access them directly from your home screen.
But what if I could give you a better solution which will help you to access all of them one a single application and moreover it will be more fluid and fast as compared to the browser. Download the Google named application and then on the home screen of that application you will see an icon to access all the applications (web-based).
Again on this screen you will have two tabs at the bottom of the screen to see all the application available on the web and all the other applications which are available in the App Store. So from here you will be able to access Blogger, News, Picasa Photos, Tasks and Calendar.
Once you tap on the icon of any of the application a new tab will be opened where you will be logged in for that service. That new tab will be opened in that application only (you will not be diverted to Safari for that). But you will be able to access only one of such application at a time. Please let us know if you face any problem while using this feature.