Have you tried Flutter? How has your experience been?

I used it for an idea I had when it first came out (around June 2017), and I found it pretty stable. However I found that the docs was VERY lacking and it was hard to do anything without looking at the provided example apps. But I have recently been looking into it and it seems the docs is much better now.

Keep in mind my opinion is based on my experience June 2017!!

I have tried it, but it was really annoying for me to work in...

Last preview version came out last week. Next is stable release 1.0. So far, my experience has been great. I am even using it to rebuild an app from scratch and developing a client's app as well. So far, it is good. Minimal tooling, easy code and quick results.