Download a sqlite database into bundle

Hi Everyone,

i'd like to find out your suggested approach on downloading a database from web into application's bundle. I'm designing an app that'll work with multipe databases (one at a time), but we're planning on updating each database daily, and we'd like user to be able to download the most recent one.

I'm not sure about this, but i've been researching yesterday and some source said that app's bundle is read only, is this right?
If yes then where could i store the db to be accessible for the app offline?

thanks a lot for your help in advance

greetings
peter