iRinger is free to use.
You can create unlimited iPhone ringtones from virtually unlimited media with all the functionality of iTunes.
How is this possible?
iRinger has an advertisement window placed in the program which generates revenue towards iRinger. If you donate a minimum of 10$ US, a Donation Key will be sent to you as a gift! This key will close the iRinger advertisement window as well as unlock hidden features.
What if I can't donate right now?
That's OK! Just make your ringtones anyway and if you see something that interests you in the ad window just click on it. You will be taken to their site so you can check it out!
 
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