RPi-sd card builder v1.2 (updated)
-bugs reported removed
-Now you have to select a .img file. not the .zip like the old version

i tested in Snow Leopard(10.6) and Mountain Lion(10.8).

RPi-sd card builder v1.1
error that caused the app break at the start corrected.

How the app works?

1. Run the app.
2. Select the operating system distributions (.img file).
   
3. You will prompt whit this. After you connect your sd card press continue.
   
4. Now you have to select your sd card. BE CAREFUL, see the name and select ONLY one sd card.
   
5. Now the program will need administrator privileges. insert your password.
   
6. Confirm that your sd card has been unmounted. When you confirm that, press continue. (this can take a while).
   
7. And that’s it..now you can connect your sd card to your raspberry pi…
   

If you like or have problems leave a comment.

If you have some problems with this app please comment and let me know what is your Operating System and in what step the program crashes.