Free Art License
Any art you download for FREE from this site is under a Creative Commons Attribution License. This means that you may copy, distribute, display, and perform the artwork and make derivative works based on it as long as you credit this site.
Credit is as simple and easy as a line in your "about" page in your app (or on the store page of your app in the iTunes store, Google Play, etc) saying "Art from GameArtGuppy.com". This helps other indie devs find out about the free art!
You may not sell the actual art by itself, but you may use the art in an app that you publish on the app store, even if the app is not free.
Paid Art License
Purchasing art from this site grants you a non-exclusive, non-transferrable license to use the art, royalty-free, for personal and commercial projects. This means you can use it in your games and apps, even if your games and apps are not free. You may also modify the art.
You can NOT resell the art, or resell art made by modifying art from this site.
For the full license agreement click here.