3uTools supports to download various ringtones for free, you are able to play it or download it to your device. 

In case you can't find the ringtone in our resource, "Make Ringtone" is set for you to make your own songs as a ringtone.

As the screenshot, you can choose a song from your PC or your device. You are suggested to make the ringtone not more than 30 seconds.

When you play the song in making a ringtone:

1. You can set a start time for the ringtone

2. Set an end time of the ringtone 

3. 3uTools supports the fade-in and fade-out effect to make your ringtones more smoothly.

   
   

If you enable this feature, please drag your mouse to set the fade-in and fade-out time on this page.

Then you could generate a ringtone, and set if for your iOS device.