Story World Builder is a story-planning tool designed by webtoon and web novel professionals.
When an idea strikes, when you're shaping a character, when the plot gets stuck — it's with you at every step of creation.
Key Features
1. AI Scenario Ideas
Pick a few keywords and AI suggests 3 distinct story frames.
Choose the one you like, and it even expands into a draft plot for Episode 1.
2. Worldbuilding
Record your world systematically — background, rules, magic systems, and places.
The AI worldbuilding assistant helps you expand settings and check for contradictions.
3. Character Management
Design characters in detail: personality, MBTI, appearance, and abilities.
See how everyone connects at a glance with the relationship map.
4. Storyline
Visually build timelines where multiple characters' stories intersect.
Compare each character's actions across time periods at a glance.
5. Plot Builder
Structure your story with episodes, scenes, and cuts.
AI suggests next-scene ideas, plot twists, cut ideas, and plot feedback.
6. AI Writing Assistant
Dialogue, name ideas, scene ideas — AI is there whenever you're stuck.
Conversations are saved per project so you can pick up where you left off.
Good to Know
- All creation features (worldbuilding, characters, plot, storyline) are free as a launch event.
- AI features are free 5 times a day. (Expanded while the Pro subscription is being prepared)
- A Pro subscription with more AI features is coming soon.
It's time to bring your story into the world.
Start with Story World Builder!
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
We fixed the issues you told us about.
- Fixed the custom relation type input being hidden behind the keyboard.
- Fixed the character edit sheet being pushed half off-screen while typing.
- Opening AI history now scrolls automatically so the content is visible right away.
- We also proactively fixed other screens where inputs could be covered.
Your reports made these fixes possible. Keep them coming!
Version 1.0.17
The developer, JIhyoung Seol, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
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Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
JIhyoung Seol
Size
49.3 MB
Category
Productivity
Compatibility
Requires iOS 15.1 or later.
iPhone Requires iOS 15.1 or later.
iPad Requires iPadOS 15.1 or later.
iPod touch Requires iOS 15.1 or later.
Mac Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.