Write an idea.
A sentence is enough. Sumi casts the characters, builds the places and plans the story beat by beat.
墨A comic studio for Mac
Your story, drawn. On your Mac.
Sumi plans the story, paints every panel and letters every bubble. It runs entirely on your own computer, free, with nothing sent anywhere. Or bring your own keys for cloud models. You stay in charge of every page.
Free with local models or your own keys. Apple silicon Macs.
Is that…a bottle?
To Mara Quill. Do not open until 2066.
That's my handwriting.
FWOOMOne idea. A whole comic.
A sentence is enough. Sumi casts the characters, builds the places and plans the story beat by beat.
Watch it paint.
Every panel, one by one, in the style you chose. Faces and outfits stay the same from page to page.
Make it yours.
Change anything in plain words, move every panel, letter every bubble, then print it, post it or put it on the web.
From a sentence to a finished book.
Four steps. Sumi does the heavy lifting; you make the calls.
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Step one
Write your idea.
A premise, an ending if you have one, a few beats if you like. Or start from a template. Sumi picks a story style and plans every page.
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Step two
Meet your cast and their wardrobe.
Check the characters and places Sumi created, and paint their portraits. Each character gets a wardrobe: outfits you pick per scene or episode, from a raincoat at dawn to a scarf in winter. Every panel after this keeps faces and clothes the same.
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Step three
Paint the panels.
Watch each one appear. Change any of them, in words or by hand: "make it night", a new pose, a closer shot.
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Step four
Lay out the book.
Sumi arranges the pages and letters the bubbles. Nudge anything you like, then export a PDF, a print file, a comic reader file or a web comic.
Download for Mac
Wide · dawnEvery morning, the same pier.Medium · reachingWhat's this?Close-up · the letterMy handwriting…Close-up · stunnedDated 2066?!Wide · nightFWOOM+Add a scene
Planning the story…
Tell it like a mystery. Draw it like a manga.
A death game isn't paced like a romcom. Each story style gives the writer the shape, signature moves and panel language of its kind of comic. Then choose how it's drawn. Or leave it on Auto, and Sumi picks the style that fits your idea and shows you what it chose.
Story style
Art style
Low Tide Job
Four retired thieves, one museum on a tidal island, and six hours before the sea comes back.
Crew introPlan vs. reality
17story styles× 20art styles+ yoursas many as you like= ∞ways to tell a story
The built-in styles are just a starter pack. Write your own, import a pack from a friend, or describe a look in one sentence and let Sumi build the style for you.
Starter art styles also include American comics, manga, European BD, cartoon, realistic, digital art, vintage, chibi, pop art, pencil sketch, storybook gouache and painted graphic novel.
Built for stories that keep going.
Comics run for issues, not pages. Start a series and Sumi plans the whole arc: every episode's title, its logline and the moment it ends on. Write the next episode when you're ready. It picks up exactly where the last one stopped.
+Write the next one
One cast for every episode.
Change a character, an outfit or a place once, and every episode follows.
A wardrobe that remembers.
The coat from the winter chapter is still there next winter.
Continuity notes.
Before each new episode, Sumi lists who is where, who knows what, and every open thread. Edit them if you disagree.
Recaps and cliffhangers.
"Previously…" and "To be continued" pages, made for you.
Collected editions.
Every episode in one PDF, print file, comic reader file or web comic.
Any length you need
A four-panel stripFor a daily gag or a post
A six-page shortOne story, one sitting
A fifteen-page issueA full chapter of a series
Made for comics, all the way down.
Lettering you can rewrite.
Try itBubbles sit on top of the art, so changing a line never repaints the picture.
That's my handwriting.
Art untouched
Click the bubble and type
Change it in plain words.
Try itSay what you want. Sumi repaints just that panel.
Pick the best of many.
Paint a few takes, keep the one you love.
Take 1 of 3
Same face, any angle.
Turnarounds keep your cast on model.
A real page editor.
Try itPick a layout or let AI give the big moment the big panel. Tap a panel to feature it.
Print-ready.
300 dpi PDFs, bleed included.
6.63 × 10.25 in
Read anywhere.
One click, any format.
Pick a format
Snapshots.
Save the book as it is, keep experimenting, and compare. Drag to see what changed.
六The Styles library
The built-in styles are just the start.
Every list in Sumi is a starting set, not a limit. Add your own story styles, art styles, framings and lighting. Tweak the built-in ones, and reset them any time. Hide the ones you never use. Then share your favourites as a style pack, one small file anyone can import.
- Add, edit or hide any story style, art style, framing or light
- Export and import style packs
- Bring your own LoRA looks for a style that's truly yours
七Fully local
Everything on this Mac. Really everything.
The story writer and the picture engine both run on your Mac. Nothing you write or paint leaves it.
One-button setupNo terminal, nothing to install by hand.
Uses what you haveFinds your ComfyUI, Ollama and models.
Works offlineNo account, no upload, no meter.
No page limitFree, as many pages as you like.
Needs an Apple silicon Mac with 16 GB of memory and about 35 GB free.
Setting up Sumi
OFFLINE墨
Story writerReady
Picture engineFound ComfyUI
ModelsReused 2
Painting page 3…
Or bring your own keys
Want the cloud? Use your own keys.
Plug in your own OpenRouter, Claude or OpenAI key and pick the model. You pay the provider directly, and Sumi shows the cost before it sends anything.
- Mix and match: a local writer with cloud pictures, or the other way round
- Cost shown before you paint, and per project after
- Your keys are never stored, logged or exported
Your Macstories, pictures, keysThe model you pickedonly what this step needs
OpenRouterClaudeOpenAI
Your stories are yours.
Sumi doesn't watch what you make. With local models, nothing you write or paint leaves your Mac. With cloud models, only what that step needs goes to the provider you picked, and nowhere else. Your keys stay on your computer.
Grown-up castsEvery character in a Sumi story is an adult, 21 or older.
Hard linesSumi blocks anything that sexualises minors, whatever model you use.
Your call, every stepSumi never switches to a model you didn't pick.
Free to make. Pay only for more.
Sumi is free with local models or your own keys, with no page limit. Pay once for the premium tools, or join Blue Bucket Studio to paint on our models with no setup, in every Blue Bucket app.
Free
$0 forever
- The whole studio, from idea to finished book
- Every story style, art style and export
- No page limit, no account
Sumi Unlock
$29.99 once
- The premium tools, yours for good [list to be decided]
- Every new feature for 12 months
- Still local or your own keys, no subscription
Studio Plus and Max
from $9.99 a month
- About 75 or 165 pages a month on our models, with no keys or setup
- Premium in Sumi, Wasabi and every Blue Bucket app
- One account and one allowance across every app
Full pricing, a usage calculator and every plan side by side
