How to make an android app beautiful like this one?
android, plugins
Solution
I think what you're impressed with is the consistent color theme of the application. It looks like its designers carefully overrode the default design of Android widgets with their own custom scheme.
There is NOT any plugin for development tools that will help you achieve this; however, there are many external tools.
Here is a tool to generate styles for the action bar (the navigation bar at the top): http://jgilfelt.github.io/android-actionbarstylegenerator
A tool to generate custom colored Holo widgets: (Holo is the theme in modern Android platforms): http://android-holo-colors.com/
And my #1 favorite resource for this type of customization, this website: http://www.stylingandroid.com/
These three are more than sufficient to customize an interface like the one you linked to above. Good luck!
Problem
I'm an amateur android programmer and I really like to code. My main difficulty is to make apps nice. I came across a simple app, but at the same time, nice: https://play.google.com/store/apps/details?id=com.linksaude.bulas I would like to know if this app has been designed with some specific plugin/add-on for Eclipse or whatever. It seems to be so consistent and beautifully designed that there must be an answer to simplify the building process of such apps. Thanks!