Hi,

please remember a org-file is still (and thankfully and amazingly) a plain text file. As long as you are not going to make big changes, any other (smaller) text editor will do, e.g., nano, pico, *cough* vim *cough*.
I found myself comfortable to export the org-file to html and display it in my E-ink Ebook reader. Not able to edit it but reading my notes and thought like on printed paper is nice :)

Greetings

Totti