Good Start but needs some work
Its clean and looks good but needs some UX work and a few more options to compete. I've been using CYFE for years and also KlipFolio. Pricing is of course much better for this tool - for AppSumo users but I also want to look at it for the price it is typically and what a regular user can expect.
A few thoughts - the dashboards should be able to be larger than they are. I run a 4K monitor for my dashboards (46in) and I also run a 3k and 4k for my laptops and iMac. Forcing it to a fixed width means I can't load it up as much as I could and forces the user to scroll.
Even though it is clean, a little color is never bad..
The add widget function is confusing. I'd get a few AppSumo users together on an email thread and walk through it and see what feedback they have.
Offer more templates.
I have a few more thoughts but out of time today...