I decided to replace Bjango's iStat menus (not to be confused with the very similarly named iStats X) with this as the former doesn't always play nice with Time Machine and am pleased so far. It takes up less memory, is easier to use then iStat menus, and Time Machine doesn't have issues with it. I miss the pie chart and the memory breakdown by color but those are minor things.
are you sure that you used the 'good' application ? I saw that on the developer site: "We have nothing to do with an app called "iStats X: CPU & Memory" which is available in the App Store. iStats X is a copy of an old version of our app." ...
I download this app. I am using macOS Catalina. I could not install it as an alert said "Apple cannot check it for malicious software." The alert also said the software needs to be updated and contact the developer for more information. So I cannot rate this software.