It would be great if it had a sound alarm when change occurred.

Can be better, unfortunately..

When activated goes on error.
Tested on the latest Firefox Developer

Ótimo app!!! Muito prático e direto ao ponto, funciona 100%

Sipp mamtap

Great

I try to setup refresh on one tab, but it only gets activated on a different tab in an *other* window! Needs some more work...

It is inconvenient because it is located at the top of the page each time it is updated.
I want you to keep the scrolled position.

Please, add context RMB-menu - for pages and tabs, as alternative to the button-menu.

p.s. Do you have a github page ? )

It literally doesn't do anything. I set a time interval and then it still just says "OFF".

простое и приятное дополнение. работает как надо!

Works, but the UI is pretty awkward.

Works great in Firefox 57 (Developer Edition).

My only wish is that I could type a refresh interval into the interface instead of having to use the up and down arrows.

I needed another auto-reloader, so I decided to give this a try, even though in the description it sounded a not so good idea (reloading based on URL, instead of tab id.) It has no [Apply] button or anything, so I was never sure the period was set or the add-on was active for the tab/URL (even though the period set reappeared when I reopened its pop-up). Anyway, nothing ever happened, no reloading, no nothing...

Works fine for me.