WaniKani pitch accent script. It does render stuff like じょ, ひょ etc. as 2 morae instead of one but otherwise it’s pretty good.
You can also check out this thread
As evidenced by a couple recent posts , many Japanese learners make it surprisingly far into their studies prior to the shocking discovery that pitch accent exists in Japanese , and that understanding how to acquire it correctly it is essential for speaking Japanese without an obvious accent.
Whether or not to dive into this subject (and when) is apparently slightly controversial, but for those who have decided to take the plunge, here’s a place to share resources, strategies, and questions. I’ll…