Can I upgrade to Unity pro during game development?

I’m currently working on a game using the free version, but I really don’t want the watermark to show.

Can I upgrade to Unity Pro during its development so that I don’t have the watermark showing, or would I have to start making the game again?

(or is there a way to hide the watermark on the free version?)

Sorry, I can’t work out if this is a really obvious question,

Thanks, laurienvictoria

You can upgrade at any time, no worries.