> because I was tired of timer apps that require accounts, downloads, or complex setup

Does your phone and PC not have a clock app preinstalled?

And fun fact: this works with Google too

https://www.google.com/search?q=25min timer

https://www.google.com/search?q=countdown to 17:00

https://www.google.com/search?q=countdown to 2026-01-05

(or since most have Google as their default search engine, just write "25min timer", "countdown to 17:00", etc in the url bar)