In POWr Hit Counter, what is the different between Unique Views and All Views?
All Views - counts every time someone visits the web page. This includes repeat visitors.
Unique Views - counts unique visitors to the web page. This is done by placing a cookie on the visitors browser, which remembers them for 10 days. During those 10 days, repeat visits by that visitor will not count towards your Hit Counter. After 10 days, the visitor will be considered a new visitor, and they will be counted a second time.
You can choose whether to count Unique or All views in the POWr Editor.
Just go to Content -> Counter Admin -> Views to be Counted.