Simple Weather App

This app works like the million other apps around. It just tells the weather. Nothing else.
You put in a zip code and the app gets a a week's worth of data based on said zip code.
So why I would I make an app that's completely indistinguishable from the thousands of others? Well, its simply to prove that I can. And the following is how its designed:

So, i am using a service to query the weather database and save it into two different database tables. I then use a cursor loader to load the data from the database asynchronously and set it to the respective views in the main and detail activities.
To get to the database i am using a content provider and a contract class to allow for greater abstraction and therefore greater security for the app.
Fragments were also used instead of activities so that the app will also be easier to scale to larger phones and tablets.
There is also a settings activity that allow you to change a few things about how the weather data is presented.
This is version 1.0 btw so feel free to leave comments about how i can improve the app
Thanks