Hi! Maker here. So glad you liked it! We aspire to create a resource that is useful to all people, regardless of political viewpoint, who are interested in following this administration.

Here are the FAQs on how it works and how it's updated. https://trackbiden.com/faq/

Someone started Trudeaumetre[1] for Canada after the 2015 election. It's a similar format, though from a quick look, I'm not sure it's been updated since late 2019 (their Patreon link seems broken too).

Regardless, I'd like to see more of this sort of promise tracking. If someone says "You shouldn't vote for politician X because they said they would do this and didn't", not only is it easier to verify that claim, but you can also see their rate of things they said they would do vs things they didn't/couldn't.

[1] https://trudeaumetre.polimeter.org/