I'd like to have a way to see a daily count of all words I type. What are some good technical solutions to this?

In the ideal case, it counts all words that I type in any application, whether I'm using my laptop keyboard or external keyboard, and also track words typed on my phone. It intelligently tracks backspacing and option-backspacing, et cetera. But that's asking for a lot. I'm also on Ubuntu, which could make this easier or harder.

But for compromises, are there keyloggers that are known to be really secure? Are there great browser extensions that could do this for me? Is there some kind of device that I could plug my keyboard into, which would just read the count directly from the stream of key press signals?