I actually am ok with the deal because I don't need screenshotting. I don't waste resources monitoring adults. Anyways, my team does like Hubstaff Tasks but some basic features that are in many task tracking apps are missing.

Such as:
Card/Task Number - A visible unique number to identify the task. It's easier to search or find a number than a title.
Priority - Some apps get this totally wrong and think adding it in a label is fine. Well, it isn't as it's not just categorizing a task. It is setting it's important and should be tracked outside a list of categories that make it easy to get lost.
Change History/Activities - Seeing what changes happen on the task and who is doing what.

I am also interested in a public API. I see some integrations (Zapier for instance) but I would like to integrate with another integration tool that I am already using