Do I have to show a splash screen or watermark of the Unity logo in the free version?

when publishing a game with the free version, do you have to show a splashscreen or something that shos it was made in unity?

This happens automatically with the free version of Unity, and also the basic version of Unity iPhone.

With Unity Pro, or iPhone Advanced, these watermarks do not appear, and there is no obligation to show the Unity name or logo.

(It is mentioned on the license comparison page)

yeah, you have to buy it to make it go away, only seems fair.