It's called Penzu. (https://penzu.com/)
I signed up for a journal on there, just because sometimes you need a place to rant and rave and holler at the moon. Facebook (and to a lesser extent, literally, Twitter) can only handle so much of my wrath and my disappointment in the world. I need a place to bare my soul and my mind, lay open my naked thoughts and hopes and dreams and yes, to, a place to fling cursing arrows at the powers in this world that live to crush my thoughts and hopes, and especially dreams. That live to crush us all.
It seems easy enough to post on there and I'm doing a lot of bitch-logging (what I call rant blogging) on there and so I thought I might go ahead and mention it as a possible distraction-free writing tool, and as a journaling tool for writers.
The layout is rather simple, unless you want to pay for a Pro account, which of course has more bells and whistles. The screen is not customizable to provide for different backgrounds, but again, if you upgrade from a free to a pro account, you can make it full screen. I don't really need that as if I want to, I can make the text bigger. I am only using it as a private journal, so I have no need of the fancier add-ons. I have Writer, the internet typewriter for my more serious writing that I may want to go fullscreen mode on. And it's free there.
Since few people will be seeing my Penzu posts, if anyone does, I don't feel the urgency to edit the hell out of everything I write on there. So, I'm just letting the words fly...incorrect, type-o'ed, foul and furious...it doesn't matter. It's naked emotion and my hope is that it will be cathartic and also let me bring some of that raw naked emotion to my fiction and poetry.
Your Penzu journal is lockable with a password key. This is helpful in case you want to vent about your life or just keep your "secret recipe" fried-chicken recipe secret. It's like having a friend to whom you can tell your deepest, darkest secrets. It's online, so typing is involved, good for those of us whose hands cramp only after a few minutes of handwriting and whose penmanship is penmanshit. I confess I can't even read my own handwriting on a good day.
The theory here is that not being concerned about and concentrating too much on writing dazzling prose, and on editing while writing because I'm too much a perfectionist, will lead me to better writing overall in my work. That's the idea behind writing naked and editing naked. (Did you really think I'd be in the nude? Well, maybe sometimes I will be).
Penzu will let me write my innermost fears and rants, naked and free, with just a little bit of armor (password protection). This is the Dear Diary we all wished we'd had when we were thirteen years old.