Last update timestamp as page content

I am still converting my site from RW5 to RW6 and while working on that I noticed that some pages have not been updated for a long time.

This made me wonder if it would be possible to expose as part of the page itself the date of the last update (either last update on RW on when it was uploaded last).

Is this a feature in RW already (and I just missed it)? Is this something that can be done with some add-on? Or do I have to remember to manually update the timestamp by myself when I edit a page?

Something like this in a HTML stack ?

You can also do this with the Tardis Time stack which is part of the Tardis stacks,