Do you use Git for storing notes?If so how do you handle cross platform?

I've seen many posts encouraging to use git in combination with (Github/Gitlab/any other option you like) to store personal notes in a sort of central and personal knowledge base.

The main reasoning behind this is that applications such as Evernote could eventually disappear at some point, so if I want to be able to access my notes in 10, 20 or even more years then storing them as a plain .md or .txt file would be the best idea.

I'd like to give this idea a try, but I've found that there is not a straightforward way to use this in a multiplatform way. For my concrete case it is Windows + iOS. I'd use Windows to write my notes and iOS to consult some information on the go.

I've found that even though there is even an official iOS Github app navigating in between multiple notes is not very friendly and also I've found no way of rendering the Markdown for notes other than the README.md of the repository.

Maybe I am approaching this note system the wrong way, so if you use something similar I'd like to hear how you handle this.