Raindrop is great! Its written by one guy and the polish / quality of his work is top notch.

Our roadmap is going to bring us in a different direction than Raindrop, but more details on that later.

Can you elaborate on how you will be better or in what ways you are already better ?

I don't want to claim that Linkidex is better than Raindrop. Raindrop and Linkidex will serve different audiences. That said, we aren't quite ready to share our long term roadmap.