Love the instant functionality. I immediately bookmarked it.

I absolutely hate the design though. I almost left the page before trying it because the design is so hard to look at. It literally hurts my eyes.

Use lower-contrast colors, and probably not a dark background.

I don't know how you are giving results so fast but as other comment is saying, design doesn't do justice to the usefulness of the app. Good luck.

I have recently built this domain name generator. Any feedback or comments would be appreciated.