Is there a way to know what features people are already working on and which we can take on?

I wanted to help work on the iOS app and fix some of the features people were having as well as contribute to it. However, I do not know what people are already working on and how I can say what I am working on. Is there somewhere where people are keeping track of this?

Check out the various GitHub repos. See open Pull Requests and discussions there as well as on the Issues tab.

There are no open PRs or discussions about it on the Github page.