I use file system to manage my knowledge base. The repository has a well defined directory structure. I have a bunch of scripts to help me creating these directories on the laptop. But in iOS, I have to create them manually. Recently, I have found out a way to work around it via Working Copy.
One of my favorite features of Inoreader is saving the article to external services, such as Evernote, OneDrive or Google Drive. I can archive the articles I liked for future references.
I prefer using Vim in a terminal. I can switch to the shell with Ctrl-Z and back with fg. However it is hard to integrate a terminal command with other GUI tools, such as editing a file in Vim from Finder.