Responsive web design is frustrating huh?

I have been using a few online tools to check the responsiveness of my designs on websites. But I came across this browser on product hunt that can help stream-line the process.
I just had to share it as know some of you would appreciate it. There is a few things I dislike about it but it still is great for checking your designs.

https://manojvivek.github.io/responsively-app/

Oh and I have no connection with this at all. Just love to share valuable things

That looks pretty cool actually. Starred on github. Will report back if I end up using it. I'll try and remember.