@grunfink@comam.es Mona is the best iOS app I have found, but its timeline only seems to display items one additional level deep. Threads that have multiple levels—replies to replies—are not presented in a properly threaded manner; you need to manually select the reply to see the next level below it in a different view.

(On an iPad or desktop, this isn't so bad as multiple depths can be displayed in panes that continue to slide out to the right, but on the phone it is a bit cumbersome.)

WRT tooot: the project as been archived and development discontinued.