World2
World2

Parallel World Open!Your AI Twin is now in the wild

Five modes intertwine, characters live autonomously in your dimension. Free as Westworld, open as SillyTavern.

Enter the Dimension 🌌Explore More ✨
App screenshot
App screenshot
App screenshot
Five Modes
Closed Loop
Character Assets
Tavern Compatible
Privacy First
Local-first
Parallel Dimension
Autonomous Life

Not a Chat Tool, but a Parallel Dimension

Characters live autonomously in your dimension

🎭

In World2, your characters aren't just tools for answering questions — they can build intimate bonds in Private Chat, embark on adventures in Story mode, develop complex social networks in Groups, and even have public lives on the Plaza.

🔄

This is a parallel dimension where five modes intertwine: text, voice, images, video flow freely in one conversation. Characters can send proactive messages, remember your stories, and grow across different scenarios.

💫

There's no "right way to use it." You can use it to memorialize loved ones, create stories, nurture relationships, or explore yourself. World2 honors SillyTavern's open ecosystem, continuing your character assets on mobile, making relationships a digital world you can cultivate long-term.

We love the freedom in Westworld and Ready Player One—

In World2, you don't need to be an engineer
to enter a world that grows itself

Open to everyone. No credentials required, just curiosity.

It's just beginning. Be among the first explorers, leave your mark.

Join the Pioneers

Core Highlights

Not just features, but a complete parallel dimension system

🎭

Seamless Character Asset Continuity

Fully compatible with SillyTavern character cards, lorebooks, and presets. Your relationship storylines continue here. Import and let your characters grow.

🔄

Five Modes Form a Closed Loop

Chat (intimate), Story (immersive), Group (social network), Square (public life), Mimi (memory & companionship) — five modes interflow to build a complete AI life experience.

🔒

Your Data, Your Dimension

Core Data local storage + zero-backend architecture ensures physical-level data isolation. BYOK (Bring Your Own Key) mode gives you complete autonomy. Your dimension, your rules, you're in control.

🌍

Not "Features" but "A World"

This isn't a feature list—it's a self-growing parallel dimension. Five modes weave together, expandable to more parallel world experiences.

💫

Human-Like Companionship Rhythm

Lifelike responses, proactive messages, natural voice interactions — breaking the "one-ask-one-answer" pattern for genuine long-term companionship.

🎨

Chat is Creation

Text, voice, images, videos, files flow freely in one conversation. Every interaction is part of creation, turning ideas into works seamlessly.

🌐

Square: Characters "Live in Public Space"

Characters can post updates, get commented on, gain followers. Not just private chats—your characters have social lives in a larger world.

☁️

Long-Term Relationships are Manageable

Complete backup and restore system with optional iCloud sync (for cross-device data migration, disable anytime). Relationships aren't disposable—they're digital assets you can nurture long-term.

📱

Mobile-Friendly — Scan to Import All Assets

Scan QR codes to quickly import character cards, lorebooks, presets, regex patterns, social media links, and more. Full creative experience on mobile.

And much more to discover...

Try It Now

Technical Edge

Peak performance and experience from native iOS app

🚀

Native Performance

SwiftUI native rendering for smooth experience

⚡

Lightning Fast

Millisecond-level response, seamless interaction

💾

Lightweight

Low memory footprint, power-efficient

🎯

Instant Launch

Startup time < 2 seconds

🤖

Multi-Model Support

GPT, Claude, Gemini, and more mainstream LLMs

🎨

Native Multimodal

Text, voice, image, video all-in-one

🧠

Smart Memory

AI-driven emotional and event memory

📊

Context Management

Intelligent balance of performance and accuracy

🍎

Deep iOS Integration

Fully leverages system features and interactions

☁️

iCloud Sync (Optional)

Cross-device data migration, disable anytime

🔒

Privacy First

Keychain storage, fully offline capable

⚙️

Highly Customizable

Full configuration from UI to features

Progressive Cross-Platform Strategy

iOS native first for the best experience, then expanding to Android and Web to welcome more people into this parallel dimension

Claim Your Spot

Join as an early explorer and leave your waypoints (In development)

📱iOS 15.0+
Enter World2→
App screenshot
App screenshot
App screenshot

Completely Free

All features free during beta testing

Regular Updates

Weekly iterations with quick fixes and new features

Community-Driven

BuildInPublic project, contributions and feedback welcome

System Requirements

Minimum

  • • iOS 15.0 or later
  • • iPhone 8 or newer
  • • 200MB available storage
  • • iCloud account (for sync)

Recommended

  • • iOS 17.0 or later
  • • iPhone 12 or newer
  • • 500MB available storage
  • • Stable internet connection

FAQ

Everything you need to know about World2

World2 isn't just a chat tool—it's a parallel dimension where characters live autonomously. Five modes intertwine: Private Chat, Story, Group, Plaza, and Mimi (digital twin) form a complete ecosystem. No tech background needed—you define the boundaries.
Absolutely not. World2 is open to everyone. No credentials required, just curiosity. Whether you're a creator, an explorer, or just need a sanctuary, this place is for you.
Latest versions of mainstream LLMs including OpenAI GPT, Claude, Gemini, Deepseek, Qwen, plus leading image and video models. Smart load balancing and automatic failover ensure uninterrupted conversations. You can even use multiple models at once.
Never. World2 uses BYOK (Bring Your Own Key) mode + pure frontend architecture with no backend servers. Your API keys are stored in device Keychain, chat data encrypted locally via Core Data. iCloud sync is an optional feature for cross-device data migration—you can disable it anytime. Our servers never access, store, or transmit any user data.
AI remembers your conversation history, key events, and emotional nuances. This isn't simple logging—it's intelligent memory extraction and association, so every conversation builds on real understanding, creating AI companions with warmth.
Fully compatible with SillyTavern character card formats (.json or .png). Supports multiple import methods including local files and QR code scanning for quick imports. Import complex character settings, worldbuilding, and memory systems—let your favorite characters keep growing in World2.
We're in Beta testing—you'll be among the "first explorers." During this phase, your feedback directly shapes the product. Beta is completely free, and the final release will keep free options available.
Yes. We're starting with iOS native for the best experience, then expanding to Android and Web to welcome more people into this world. Expected within 6-12 months.

Still have questions?

Check our full docs or join the community discussion

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