We looked for a tool exactly like this to organize our small team of 4 people. And I was totally happy to find this on AppSumo. We like the layout and the range of functions. Not too much, everything easy to access and pleasant for the eye.
I've been playing around with EdWorking now for like 10 days.

BUT: 1. Speed is really slow... sometimes a site is not loading at all, sometimes it takes 10 seconds to load the dashboard. Sometimes tasks disappear for a few seconds and reappear. Sometimes task appear in the "old" board after dragging them into a new one.
2. App on iPhone is crashing as soon as you click on the "Chat" Tab so fast replying to a progress on a task via phone is not possible
3. Writing documents is totally bugged imho. When I create a new document it has the same content as the already existing document. Only the name of the document changes...
4. After pointing out these issues the support is not answering any more.

So yeah, overall it would be such a good tool. But the best set of functions and the best layout is useless as long as the functionality is buggy and the UX feels slow and unreliable.
I am going to wait for 2 or 3 weeks and hoping that the issues will be resolved else I will demand a refund.