Protected by The Barlow Code

Your mind is a graph.
Keep it sovereign.

Beatrice is a personal knowledge librarian built on a radical premise: your ideas belong to you. Semantic search, on-device AI, and direct device-to-device sync — no cloud, no account, no middleman.

Beatrice +
📝 Note
SwiftUI Navigation Patterns
NavigationStack vs NavigationSplitView…
💬 Concept
Spaced Repetition
Reviewing material at increasing intervals…
🔧 Code
Custom Layout Protocol
Implementing sizeThatFits and placeSubviews…
📖 Reference
Thinking, Fast and Slow
Daniel Kahneman — System 1 vs System 2…
Types
📝 Notes 12
📄 Documents 5
💬 Concepts 8
🔧 Code 3
Settings
Replay Onboarding
💬
Spaced Repetition
Concept

Spaced repetition is an evidence-based learning technique that incorporates increasing intervals of review. Material is revisited at strategically expanding gaps — first after minutes, then hours, days, and weeks.

The algorithm adapts to individual performance, presenting harder material more frequently and easier material less often.

Created
Mar 15, 2026
Words
142
Connections
3

Built for how you actually think

Beatrice adapts to your workflow — not the other way around. Here's how people use it every day.

🎓

Students & Researchers

Connect papers, theories, and notes. The Synapse engine surfaces contradictions and related work. Semantic search finds citations by meaning, not exact text.

💻

Developers

Store architecture decisions, API patterns, and debugging learnings. Link related code snippets across projects. Share URLs directly from Safari.

✍️

Writers & Creators

Build character bibles, world-building documents, and plot outlines. Connect themes and motifs visually. Radial Focus lets you deep-dive one topic at a time.

💼

Project Management

Link meeting notes to project docs, action items to decisions. See the full context of any decision with one tap. No more digging through folder hierarchies.

📧

Email Knowledge

Save important emails as nodes. Connect related threads. Build a searchable archive of conversations, decisions, and commitments.

🧠

Personal Learning

Save articles from any app. Link new ideas to existing knowledge. Beatrice auto-discovers connections you missed. Your second brain, always growing.

Built with Modern Apple Technologies
SwiftUI SwiftData NaturalLanguage On-Device AI

A mind that thinks with you

Beatrice doesn’t just store your notes. She understands them — and helps you see connections you didn’t know existed.

Semantic Search

Ask questions in plain language. Beatrice finds relevant nodes by meaning, not keyword matching. “What did I write about spaced repetition?” — answered instantly.

On-Device AI

Embeddings are generated locally using Apple’s NaturalLanguage framework. No API calls. No data leaving your device. Intelligence that respects your boundaries.

Relationship Graph

Link nodes with typed connections — supports, contradicts, expands, summarizes. Your knowledge becomes a living structure, not a flat pile of notes.

The Librarian Speaks

Text-to-speech reads your notes aloud. Review ideas while commuting, exercising, or resting your eyes. Your knowledge, voiced.

Any Format, One Graph

Notes, documents, code snippets, images, emails — every piece of knowledge becomes a node in the same graph. No silos. No fragmentation.

Native Everywhere

SwiftUI on iPhone, iPad, and Mac. The interface adapts to each device — canvas on iOS, split view on macOS. One app, three native experiences.

Radial Focus

Deep-dive into one topic at a time. A central node with its related ideas orbiting around it — tap to drill deeper, breadcrumb to navigate back.

Your data on every device.
No server required.

You shouldn’t have to choose between privacy and access. Beatrice offers two direct sync methods that keep your knowledge graph consistent across your devices — without a cloud provider ever seeing a single byte.

Method One

Local Mesh Sync

Your Mac, iPhone, and iPad discover each other directly over your home WiFi. Data flows peer-to-peer — device to device, with no intermediary. No server. No relay. No internet connection required at all.

  • Direct device-to-device transfer
  • Works offline — no internet needed
  • Encrypted end-to-end on your network
  • Zero third-party infrastructure
Method Two

Email-Relay Sync

For when your devices aren’t on the same network. Beatrice uses your own email account as a private data carrier — encrypted payloads travel through your existing IMAP/SMTP infrastructure. You own the pipe. You own the data.

  • Uses your own email — no new accounts
  • Decentralized — no Beatrice servers
  • Encrypted payloads, unreadable by providers
  • Sync across different networks & locations
Neither method touches our servers. We don’t have servers. That’s the point.

Not just another notes app

Beatrice is the only knowledge graph that’s local-first, AI-powered, and entirely yours.

Feature Beatrice iXnote Obsidian Roam Logseq
Graph-First Interface ⚠️ ⚠️
Semantic Search ⚠️
On-Device AI
Typed Relationships 11 types Generic Plugin Basic
Color-Coded Edges
Auto-Discover Connections Synapse Plugin
Contradiction Detection
100% Local-First iCloud
No Subscription $40/yr $4/mo sync $180/yr
Native Apple (SwiftUI) Electron Web Web wrapper
Guided Note Creation
Text-to-Speech Plugin
Import (JSON / MD / TXT) CSV Limited
We Don’t Know You Exist iCloud Telemetry Analytics
Built-in Plugin / Limited Not available

From idea to graph in seconds

No learning curve. No account setup. Just open and think.

1

Capture

Create a node for any idea — a quick note, a detailed document, a code snippet, or a concept you want to remember. Choose a type and start writing.

2

Connect

Link related nodes together. Define what each connection means — does one idea support another? Contradict it? Expand on it? The relationships give your graph structure.

3

Discover

Use semantic search to find connections you didn’t know existed. Ask a question in natural language and Beatrice surfaces the most relevant nodes — by meaning, not just words.

4

Grow

Your graph evolves with you. Add nodes daily, refine connections over time, and sync across devices with Sovereign Sync — direct, private, and entirely yours.

The Barlow Code

Privacy isn’t a feature.
It’s a declaration.

Named after John Perry Barlow’s A Declaration of the Independence of Cyberspace, The Barlow Code is Beatrice’s founding principle: your knowledge belongs to you. Not to a platform. Not to an algorithm. Not to us.

01

Local Processing

All embeddings, search, and graph analysis run on your device using Apple’s NaturalLanguage and Core ML frameworks. Your ideas never cross a network boundary to be understood.

02

No External APIs

Zero calls to third-party services. No data pipelines. No telemetry. Beatrice is entirely self-contained — the app you install is the app that runs, nothing more.

03

Trustless Syncing

When your graph needs to move between devices, it does so directly — peer-to-peer over local WiFi or through your own email relay. No central server. No cloud provider. No trust required.

04

Total Ownership

SwiftData stores your graph on your device’s disk. Export it, edit it, delete it. Removing the app erases every trace. You own every byte — and you always will.

We don’t even know you exist. That’s The Barlow Code.
Coming Soon

Your mind deserves
better than a folder

Beatrice is in development. Sign up to be the first to know when we launch.