Would be excellent but…
The intent/design of this extension is great, however apparently due to some bug or oversight, the timer does not continue to function beyond one refresh for higher time intervals. When set to 15 seconds, I watched the page reliably refresh many times as expected, but when set to 1 min, 5 min, etc it will countdown and refresh once then act as if no timer has been set up for the tab. You can see the active tab disappear from the settings in the extension like it is getting deleted after the refresh. So until this is fixed, it does work fine for rapid refresh cycles, but unfortunately doesn’t do what I need it to do reliably. This is on iPadOS 15.8.