That your idea is unique doesn't really matter. Most likely anyway, it wasn't, and someone else has tried something in that area before. The implementation is what matters.

You say you are basically ready to release it. So do so. Just focus on making your product as good as possible.

If you have less features than the other company, that's fine. It seems you are launching with a smaller feature set than them, which is probably a good thing, as until you get users you won't know whether any of them are useful or not.