if you are a developer and have little clue about designs - Twitter Bootstrapt saves the day (at least for me).
Is there something similar for android (native, not web)?
The Android Holo theme codifies the UX guidelines into a theme that you can use on Android. If you are not targeting 4.0, try this project that ported a lot of the theme all the way back to 1.6. I haven't tried it myself yet but may be a good start.
https://github.com/Prototik/HoloEverywhere