Finally, Apple passed the review…
That is a good start.
Mac Store link, here is it.
System Monitor Center!!
A status Indicator of your Mac, shows your CPU temperature, memory usage, network activities, and so on…
All of them were grouped to an transparent window and can be dragged
to your favor position or can be embed
to your wallpaper.
This program allows you to start it automatically, do not forget to select “Open at Login” in drop-down menu bar icon.
And, we will continue to update this app and add more function.