I’ll go first. I dream journal with an app because I type much faster than I write, and I can actually understand my writing because I write very messy when I just wake up. I use an app called DreamKit to journal my dreams.
I’ve tried both notebooks and apps, and both have their perks. Personally I like apps better, since typing is faster for me as well and I have my phone with me all the time, so it’s easy to continue writing later, in the bus or something, if I don’t have time to finish when I wake up. It just makes it easier for me to keep up the habit. Also sometimes I remember some extra details when writing and on phone it’s easy to go back and edit things. One thing I like about paper is that I can draw things, sometimes that’s easier than putting it into words.