How do you get free coins on Doodle Devil

"All you have to do is pick a chest in the daily bonus. After that it says wait 24 hours to pick again. Sike, who wants to wait 24 hours? Back out the app and go to settings on your Ipod. Then proceed to general > Date & Time> Set Date & Time, and go forward a day.
Example: The date is May 03, 2011. change this to May 04, 2011.
After doing that hit the home button and return to app and you should be able to do the daily bonus again. Cool thing about this is that you can do it as many times as u want." Old Answer

There are 2 ways to obtain coins:

1. Legitimate: These are picking a daily coin bonus every 24 hours and buying/getting coins for free via offers.

2. Illegitimate: These hacking to obtain coins. The best way is to jailbreak your device and install an application called iFile.