Definitely! The main reason I haven't yet added support for any of those languages is just that I'm unfamiliar with them, to be honest, as I'd want to make sure they're _fully_ supported, both in terms of translations and corrections.
Is there any language in particular you'd like to see added?
It's translations, text-to-speech, and corrections. I'm pretty sure the services I currently use support all this, but there's some things built around that such as word counts for the heat map that will need looking into.
I'm certainly interested in adding them though! Will try and look into it soon and let you know.
Yes, I personally would like to see Chinese and Japanese. I would happily pay for Grammarly-like daily use tool as well, in fact, for Chinese. From what I know, there is no such tool for Chinese language whatsoever.
The service I use for automatic corrections is LanguageTool (https://languagetool.org/), and they support Chinese. It's hard for me to judge the accuracy, but I know that for Spanish it's good at picking up grammar and spelling mistakes.
I just tried very simple inherently wrong Chinese phrase "我学校中文。" and it found no mistakes in it. I expected it at least point to the error or even suggest to correct the second word to become "我学习中文。"
Is there any language in particular you'd like to see added?