Show HN: Building a Markdown editor for Mac, iOS and web

https://www.markdown.beauty/
I've spent the last 10 months building Beauty: a local, powerful greco-roman Markdown editor where the page looks finished while you type. It runs on the Mac, iPhone and in the browser, and the browser version opens without an account: https://app.markdown.beauty

I was frustrated with writing apps, and like most I used Apple Notes. After 2+ years immersed in Cursor, Codex and CC, I wished some interactions existed in a text editor.

The Markdown renders in place as you write it, including tables (which you can drag and resize without lining up pipes), KaTeX math and Mermaid diagrams. A lot of thought went into typography and the writing experience.

Your notes on the Mac are plain .md files in a folder with images next to them, so they open in anything else too. Each note keeps 200 versions. If you share a note with a link it syncs peer to peer over WebRTC while someone has it open, and the server that connects you only ever sees a random room id.

Most of the ~1,000 commits went into the editor itself. It's a contenteditable, and I don't let the browser restructure the document at all, which was a lot more work than I expected. Building this to be performant and cross-platform required some novel approaches, which I'll later open source. The editor is free with no account or ads, and there's an optional subscription for sync through your own iCloud.

https://www.markdown.beauty

Comments

mrwetsnowSep 27, 2026, 7:05 PM
"Your notes are a folder Plain Markdown on your own disk — open it anywhere, back it up, walk away with it."

Maybe I misunderstand, but the Notes folder isn't really usable from another app as is. There are no folders and all the md files have machine generated names. It appears you can export the data to get the actual structure, but that, of course, requires the app.

Something like Obsidian (or Typora mentioned below) can just be pointed at a folder and use it as is. Makes using multiple editors simple. Here, for example, there doesn't seem to be a way to use this data on linux.

Do I understand all of this correctly?

Thank you!

flagdaaallmSep 27, 2026, 9:31 PM
Good job on releasing something into world, that's never easy. That being said, I really find the landing page off-putting, with all the regular signs of having been vibe coded. It's just a red flag. The actual editor is actually decent, even if the design is super generic and also seems like it was "enhanced" with Claude code.
thiagoperesSep 27, 2026, 10:27 PM
Fair feedback and looks like a lot of folks agree. I've removed some content that felt off. What else gives you the vibe coded vibes? I actually spent some time polishing animations and other things to feel like a nice page lol
atombenderSep 27, 2026, 11:07 PM
Claude-isms like this is not what humans write and it makes my spidey sense tingle unnervingly:

> Plain Markdown on your own disk, nothing to sign in to, and the whole dialect when you want it — five things worth knowing first, each argued in detail further down

Just to break it down:

"Plain Markdown on your own disk": What an odd way of saying it stores Markdown files on your computer. In this day and age, "Stores all your data locally" is an easy way say this.

"...nothing to sign in to": Reads so awkwardly, I think, because it declares that something that doesn't exist is a good thing. It's like advertising home delivery with "no store to go to". I would put "no account needed" or "no sign-up required".

"...and the whole dialect when you want it": The "when you want it" is so weird here. Why not say it supports all of Markdown?

"...five things worth knowing first, each argued in detail further down": There is something uniquely strange about this phrasing. Why not just say: "Here's five things you should know"? Or just drop it. It doesn't add anything.

Claude is terrible at writing copy. GPT is a bit better. At the moment, Gemini is the best one, I find.

avilaySep 27, 2026, 6:41 PM
I am a heavy Typora user and I really like it except when it starts to glitch with longer documents (> 5000 words). How is this different from Typora? To be clear, I think it is ok if it isn't, the world is big enough for multiple markdown editors :-)

Also, what does the term "greco-roman" have anything to do with Markdown editors?

shadowfactsSep 27, 2026, 9:10 PM
What on Earth is a “greco-roman Markdown editor” and if I’m not someone who writes RETVRN posts on X, the everything app, why is that a desirable attribute?
arendtioSep 27, 2026, 6:20 PM
The landing page feels very generic. I have seen this exact style on other vibe-coded pages, so you might want to spice it up a little.

However, regarding the editor, I really like it at first glance. I wonder if it is possible to register a PWA as the default app for .md files with KDE...

demibabsSep 27, 2026, 6:47 PM
Yeah it looks like a really cool project.

But the landing page is not only obviously ai-generated but also hilariously long. (Like 3 times as long as VS Code’s.)

Maybe I’m wrong on this but does a fancy landing page even have any value in this day and age? Not like it signifies effort anymore…

alxhslmSep 27, 2026, 8:06 PM
100% way too long. Such a shame as it looks like a nice product but detracts from credibility.
jamesboehmerSep 27, 2026, 6:26 PM
Awesome job, this looks fantastic, and has all of the UX gaps I wish existed in Bear and Obsidian. However, my 2 biggest pain points with those could use addressing, and I would happily pay a high one-time price and upgrade fees over the years if they could be solved: 1. My corporate laptop is locked down, so no apple app store installations. Could this be made into a brew-installable app and licensed another way? 2. Related - every corporate laptop I've had for the last 10 years prohibits app store and icloud storage. So Bear notes (which I subscribed to) can't sync. Obsidian has a sync service, but I don't trust it (would prefer apple or dropbox), but unfortunately the plugin ecosystem is messy and difficult. There is no reliable community-supported plugin for syncing with dropbox on mobile. If you could make syncing with dropbox possible on desktop and mobile, that would be the ultimate gift to the community.
thiagoperesSep 27, 2026, 6:56 PM
Beauty is available on web at https://app.markdown.beauty. It has all the features, excluding things that rely on Apple APIs: search using embeddings and icloud sync. The library is stored using IndexDB and you can download the library at any time.

Not ideal, I know, but maybe it gives you a great typing UX at least

rcktSep 27, 2026, 6:13 PM
> I was frustrated with writing apps

Oh my hod… This absolutely AI generated intro.

thiagoperesSep 27, 2026, 7:01 PM
Funnily enough, this is the only sentence written by myself. Other parts of the post were written with the help of AI.

Maybe I spent so much time using AI that I started to write like them?

JaxanSep 27, 2026, 6:21 PM
Indeed, and also:

> and like most I used Apple Notes.

Most people i know that write more then just some notes use obsidian, zettlr, … or one of many other markdown editors.

A comparison with existing apps would be nice.

trollbridgeSep 27, 2026, 7:37 PM
I must be some kind of dinosaur, but I just write Markdown files with vi (or neovim these days) - or any other suitable text editor.

Wasn't that the whole point of Markdown?

D13FdSep 28, 2026, 12:11 AM
There are a few different types of Markdown apps. Many of them work like Notational Velocity/nvAlt/Obsidian where it's a folder of plain text files, you type in Markdown primarily, and the editor just applies some formatting after the fact, akin to syntax highlighting. IMO its much nicer than looking at just the Markdown, but it also has the advantage of remaining 100% portable text.
cannonpalmsSep 28, 2026, 12:54 AM
If there is a nice neovim plugin for rendering markdown as you type it, I would love to hear about it.
deweySep 27, 2026, 8:22 PM
That landing page looks like it's straight out of Claude Code (The Serif font is almost a giveaway these days). The interface will not look native on any platform.

There's so many Markdown editors for all platforms, what made you join this crowded niche?

thiagoperesSep 27, 2026, 10:32 PM
I wanted to make an app that the world doesn't need another of, because that's my usual day-to-day.

This is another game, my focus is to sweat the details and try new approaches/new tech. I also think most editors don't really do a good job so wanted to build something for myself.

Lastly I wanted to build something silly, there isn't a lot of software that looks like Winamp, this is my small ode to those days.

smokelSep 27, 2026, 5:38 PM
This question is somewhat more general than this specific application, but how can an app guarantee that files will remain local, also in future updates of the app?

To put it simply, an automatic update of the app might start uploading the notes to a server. I don't think there is any security boundary in iOS, Android, or any other platform preventing this, right?

Other than that, congratulations on what seems to be a nice app!

kccqzySep 27, 2026, 7:09 PM
You have the choice of not doing any automatic updates in iOS. I do it, partly because I want to read the release notes of every app I use, partly because if I like using an app I don’t have the designers to redesign my UI.
hyperhelloSep 27, 2026, 6:26 PM
What if any other app starts uploading the files too, though?
sick_of_slopSep 27, 2026, 6:38 PM
[dead]
garyrobSep 27, 2026, 8:24 PM
I don't immediately see a way to put an outline based on heading levels in the sidebar. For me, that's an absolute requirement, so I'll be sticking with Typora, at least for now...
librasteveSep 27, 2026, 8:43 PM
hmmm … I so want to use this … but the webpage buries this

  Is it really free?
  Yes. The editor and local files stay free, with no account   
  required. Beauty Maximus is an optional subscription for 
  keeping a library current across Apple devices and for meeting
  notes that transcribe and summarize on device.
so not free as in open source, nor free as in beer either
thiagoperesSep 27, 2026, 10:35 PM
It's free as in: no logins, no servers, everything is local and using open formats, export anytime. Syncing is paid, but if it's a huge detractor I can get you a promo code for a year's worth, just email hi at peres dot pro
librasteveSep 28, 2026, 6:17 AM
ok … I’ll play ball. I really like your idea and the demo is very convincing. I already use Apple Notes as my daily driver over Obsidian, Bear and the others because I do not want to pay $$ per month just to sync notes between iPhone and Mac. However, I would much prefer a native md option over whatever proprietary rtf stuff that Notes does. So I am your perfect target user.

Show me a well designed md centric notes taker that uses my own drive, syncs between Apple devices, has no subscription and I am listening.

So I scrolled (and scrolled) through your website to find the pricing section, and finally unearthed your very cryptic note about paying for the power option that allows me to sync. This raises three red flags to me:

  1. it is hidden and is similar to typical trick clauses that many software products vendors play … you reserve the right to hold back a key feature and make it payable

  2. it is cryptic - as you say your product is free on my devices and on web and it is shareable … maybe I can use dropbox to sync, but maybe not … now I have to invest effort to test the limits

  3. nothing prevents you from drawing the line quite high for now, but then playing more and more stuff behind your paywall over time, forgive me but (1) has already lowered my trust in you
Now - thank you for offering me a free subscription for one year … but I don’t want to strand a years’ worth of my notes behind a proprietary paywall. This tells me that (i) your intent is to take my money and (ii) you don’t understand my objection. So no thanks for the free puppy.

So here now, I am out. To get me in, you need to win back my trust. Not easy. But your product is very cool. So I make you a counter offer:

  1. make your product free for ever including synching across the Apple ecosystem to all personal users

  2. look at a product like BBEdit and adopt their freemium model where business users must pay a fair fee and it is enforced via a self declaration or maybe where folk want to collaborate with 3+ colleagues or something (I want you to make money, but I will not pay a subscription for device synching a text editor)

  3. open source your code so I can fork and build myself if you go under a bus

  4. make your policy clear and upfront (a pricing section with free vs paid comparison would be good)
bernieoSep 27, 2026, 2:08 PM
Just tried it!

Hell yeah, someone finally got notes right. I don’t say this lightly, but notes are supposed to be simple, fast and easily retrieved.

Apple Notes doesn’t give us nearly enough. Notion gives way too much. Obsidian is a mess. Craft, AnyType, etc are janky, gimmicky or slow.

You managed to make something simple, local, that gives us exactly the features we need for writing and finding notes and also MCP so I can point my agent to it?! I’d give you a fcking nobel prize for this lol

estetlinusSep 27, 2026, 8:23 PM
Yeah, how can Notes be so horrible? Makes me sad when I think about it.
HaloZeroSep 27, 2026, 8:36 PM
The ability to change font styles from the keyboarding using / is a nice touch, I wish Apple notes feature had that versus having to memorize a ton of keyboard shortcuts to change different styles.
mrwetsnowSep 27, 2026, 6:05 PM
What does the "Open Folder" option do? For me it opens a system open dialog, but there is no button to select something. Can I point this at my Obsidian folder and call it a day? If not, is there an easy way to import it?
mrwetsnowSep 27, 2026, 6:09 PM
(Is there a place to file bugs?)

If I try to paste some text (this happens to be json), I get: Paste could not be applied here — nothing was changed.

It seems I can paste regular text, but trying to paste:

{ "mcpServers": { "beauty": { "args": [ "/Applications/Beauty.app/Contents/Resources/mcp/server.cjs", "--endpoint", "/Users/dant/Library/Containers/com.markdown.editor/Data/Library/Application Support/com.markdown.editor/mcp/endpoint.json", "--allow-writes" ], "command": "node" } } }

doesn't work. (This is the generated mcp config from the app itself, I wanted to see what it generated, and tried to paste it into the app. :) )

mrwetsnowSep 27, 2026, 6:12 PM
Just a further pointer here, on a new note created:

This does not paste:

"/Applications/Beauty.app/Contents/Resources/mcp/server.cjs"

While this does:

"/Applications/Beauty.app/Contents/Resources/mcp/server.cjs

Something looking for matching quotes?

thiagoperesSep 27, 2026, 7:04 PM
Thanks for these. I'll look into it! You can message hi [at] peres.pro with any feedback or report. There's a power user group as well if you'd like to try the betas
mrwetsnowSep 27, 2026, 6:14 PM
Oh.. open folder opens the Notes folder in Finder... :P
simondotauSep 27, 2026, 9:25 PM
If an app has a menu option that makes a Finder window appear showing the relevant file/folder, I would expect that to be labelled “Show in Finder”.
KlyXSep 27, 2026, 1:55 PM
Hey, I quickly tried your editor and even when the writing experience is the most important thing, I have to admit it looks really lovely! I love the design and how it interacts. That is cool. Maybe you could add some more color options (not everyone likes the newish beige-toned interfaces). Cool that even flowcharts are supported. The only thing I miss in the block options would be a callout and the option to set a color for that callout. So far my first impressions :)
NarcisMirandesSep 27, 2026, 2:27 PM
It looks really nice. I definitely will use it.

Many questions come to mind: - What is the revenue model? - What is your personal story? Why you do not explain it in the site?

thiagoperesSep 27, 2026, 2:33 PM
There's no revenue model, no clear goal. This app is a creative outlet and a sandbox to try ideas. I added an in-app purchase as a test to see if anyone cares, it would motivate me to keep working on it.

Without the constraints of a usual project, I feel I'll actually work on it for a much longer time.

I didn't add any story or personal background because I didn't think anyone would care, but good idea! In the meantime, you can follow along on x: @thiago_peres

intrrSep 27, 2026, 2:04 PM
Amazing project and execution. Makes my IDE's quickly-bolted-on (3 hours) .md support look ridiculous in comparison. Installed as PWA. Thank you!
bionhowardSep 27, 2026, 5:46 PM
Looks epic, id like to connect a Dropbox folder
JaxanSep 27, 2026, 6:22 PM
Can’t you just open a folder inside your Dropbox folders? Then it should just sync, right?

(That’s how I use zettlr, but with nextcloud instead of Dropbox.)

schainksSep 27, 2026, 9:29 PM
So… this is… a word processor?
ananmaysSep 27, 2026, 8:23 PM
AI slop landing page == not downloading or caring. I would much rather a much simpler and more minimal landing page designed by you with some intention, even if it looks less "professional"
nmekala35Sep 27, 2026, 5:21 PM
the UI looks clean and slick. Nice work!
iAMkenoughSep 27, 2026, 6:11 PM
Website appears to be vibe coded, with some content overflowing off the screen on mobile with no ability scroll horizontally.
well_ackshuallySep 27, 2026, 6:30 PM
>Secure. Simple. Stoic.

You're writing a markdown editor, stop jerking yourself off, you're not Marc Aurelius.

trollbridgeSep 27, 2026, 7:38 PM
I, too, am wondering what a "Greco-Roman" editor means, and likewise why the choice of typeface and colour scheme that is the same thing I have to endure when I go to the Trump Accounts website.
thiagoperesSep 27, 2026, 6:58 PM
Someone has to do it
rishirathod1165Sep 27, 2026, 8:24 PM
looks good