CommentFactory
Anyone can point out flaws.
Finding the charm is different.
Put in your draft, and six virtual PDs — the editor-producers of Korean web novel platforms — and a hundred readers with wildly different tastes read it first and leave deeply invested comments and reviews. Before you hit publish, find out where your story shines. CommentFactory is available in Korean.
A hundred readers,
every one different.
A hundred readers who differ in favorite genres, age, daily life and taste, way of talking and comment length. Five to eight of the ones who fit your work show up at a time and react like readers who've followed you since episode one, remembering what came before.
- Spice levelSweet · mild · medium · spicy, and a mix of them all
- Even spicy is kindThe good parts come first — no insults, no rating bombs
- Replies and author's notesReaders reply to each other, and to your replies
Six PDs,
six points of view.
Each review has a one-line verdict, a score out of 10 with four detailed axes, strengths, weak spots with suggestions, a next-episode hook and a continuity check.
Emotional arcs, character appeal, relationships. Strengths first, weak spots with alternatives.
The pull of the first three paragraphs, the reward cycle, how hard the episode ending cuts.
Mobile readability, scene transitions, point-of-view consistency, the balance of dialogue and narration.
The role this episode plays in the overall plot, cause and effect, motivation, the rules of the world.
What readers who came for the genre and keywords expect, and what sets this work apart.
The flow of earlier episodes, open threads, whether past notes were addressed, consistency of voice and tone.
When opinions split,
they stay split.
When the PDs disagree, they hold a meeting. Nobody forces a consensus — you're left with the choices only you can make. If a review feels too brief, you can ask follow-up questions on each one.
Not a feeling —
a location.
Not "it feels a bit slow," but which paragraph readers pause to catch their breath.
- Drop-off heatmapWhere readers hesitate, mapped over your paragraphs
- Paywall forecastChecks whether the story has the pull to carry readers from free to paid episodes
- Line-edit suggestionsWhether to change anything is always the writer's call
The longer the serial,
the shorter the memory.
As episodes pile up, it keeps track of the things that slip first.
- Plot-thread ledgerThreads you've planted and threads you've paid off
- Trends and weekly reportsRatings and PD scores, episode by episode
- Relationship map · timelineCharacter sheets that even flag setting conflicts
- Submission packageSynopsis and pitch, in one go
And letters
from your readers.
Readers who've followed your serial write you fan letters — and congratulations on anniversaries and when you finish. For the days you need the strength to write the next episode.
Written in StorySeed?
No copying needed.
Import a whole StorySeed work from Drive, with the episode order intact. Your manuscript is only read during the import, never changed. Not using StorySeed? Just paste in your text.
Your manuscript stays with you.
Manuscripts and comments are not stored on StoryCrew's servers. They're kept only in your browser and your own Google Drive, and in Drive the app touches only the files it created. No visitor analytics, no ad tracking.
How to start.
At commentfactory.app, demo mode shows comments and reviews on a sample episode — no sign-in needed.
Passes are offered through the Tumblbug crowdfunding campaign (October 13, 11:00 AM KST – November 29). Every reward includes AI usage credits.
Register the 16-character code we send on December 21 to your Google account, and use it on every device with that account.
Frequently asked questions.
Are these real readers' reactions?
No. The comments, ratings, PD reviews and forecasts are all virtual reactions generated by AI. They aren't the opinions of real readers or editors, and they don't guarantee results like views or contracts. Use them as one more check before you publish.
Does it write for me?
No. It offers line-edit "suggestions" and next-episode "ideas," nothing more. Your manuscript is never changed automatically. The writing is yours.
Won't "spicy" hurt?
Even spicy readers are designed to name what's good first and point out just one weak spot. No insults, no rage-quitting, no rating bombs. You can always start with sweet.
Which genres are supported?
Modern fantasy, martial arts (wuxia), classic and game fantasy, contemporary romance, romance fantasy, BL and GL. It's built for Korean-language web novels.
Does it work on phones?
Yes. You can install it on your home screen like an app, and it supports dark mode.
Do I have to use StorySeed?
No — just paste in your text. If you do use StorySeed, you can import single episodes or a whole work.
All comments, reviews and forecasts in CommentFactory are virtual reactions generated by AI. Features may change.