Just found Trackduck. It is a tool that enables you to gather visual feedback from clients or for collaborations on projects. Kinda like a light web version of Invision. It also integrates with Asana, Trello, Slack and others, Yay!
The only thing it is missing is the possibility to have the specific task for mobile versions (breakpoints) so you get all the comments nevertheless the device you´re on. But I still think this app looks promising.
If anyone have an alternative app that does this I would love to know about it. 
Or even better. Have this feature directly in Webflow but I guess there are enough features waiting on the list there already 