Keep this harmless page open while you compare Chrome's behavior. The number increases when this document loads again in this tab. It does not identify why a load happened, measure RAM, or prove that Memory Saver caused a reload.
The counter uses this tab's session storage only. It contains no account information and sends nothing to a server. A new tab can start a separate counter. Browser storage restrictions can prevent the count from being saved.
Expected first control: click Reload once and confirm the displayed count increases. When testing an inactive tab, compare the count before leaving and after returning. Record whether you manually refreshed or navigated; either action can also change it.