Far more than bi-directional links. Built upon local SQLite and on-device knowledge graphs, paired with white-box AI reasoning and a 10-dimensional research matrix to forge an impregnable Second Brain.
Tactile fountain-pen capture, 3D celestial constellation, dual-screen laser backlinks, compounding flywheel, Munger Red-Team sandbox, on-device BYOK & academic report export
Reinventing the deep thinker's workflow through local-first architecture and cognitive compounding
Native Markdown support with smart [[bi-directional linking]]. Sub-millisecond backlink tracking and interactive stellar knowledge graphs illustrate the organic emergence of thoughts.
Vector Embeddings blended with entity graphs (Hybrid RAG). Inspect transparent, collapsible thinking chains (Thinking Process) and verifiable note citations to banish hallucinations.
Distill knowledge at the touch of a button. From empirical facts and evolutionary paths to conflict diagnosis and counter-intuitive breakthroughs, turn notes into decision-grade reports.
Preloaded with First Principles, Inversion, Occam's Razor, and more. Activate "Red Team" mode: AI transforms into a fierce sparring adversary to challenge blind spots.
Deep KaTeX integration supporting inline expressions and complex matrices. Revolutionary vector rasterization pipeline enables pristine PDF and Word (.docx) academic exports.
100% on-device SQLite storage, zero intermediary servers, zero forced logins. Direct official AI API connections. Core free; Pro monthly subscription at $2.99/mo.
Click highlighted wiki-links below to witness instant backlink lookups and knowledge graph updates
Effective thinking is never linear accumulation, but breaking problems down to fundamental truths via [[First Principles]].
When paired with continuous [[Bayesian Updating]] to calibrate beliefs against new evidence, our knowledge network develops resilient [[Antifragile Systems]] characteristics...
[[wiki-link]] above to inspect real-time radar shifts and backlinks on the right.
Boiling things down to fundamental truths and reasoning upward from there, avoiding analogies that inherit legacy assumptions.
Freely rotate your spherical knowledge cosmos, trigger synaptic waves, and inspect multi-disciplinary cognitive telemetry in real time
Explore neurons, DNA supercoils, and Earth's geosphere. Features radial exploded dismantling, numbered hotspot inspection, iPhone LiDAR physical scanning, and 3D mathematical surfaces
Every AI revelation is auditable. Hybrid RAG combined with collapsible reasoning traces lets you verify every cognitive leap
Synthesizing insights from your notes on Mental Models and Knowledge Compounding Systems, here are 3 inverted levers:
Transform chaotic notes into executive-grade structured intelligence across 10 critical analytical dimensions
Filters speculation and emotional turbulence from historical notes, anchoring insights in verified timestamps, concrete metrics, and observable causal links.
Solve formula rendering bugs on mobile. High-speed KaTeX paired with vector rasterization for flawless PDF and Word documents
Sycophantic chatbots only reinforce cognitive blind spots. Red-teaming turns AI into a rigorous adversary to stress-test ideas
When given a bold assumption: "I believe if we build an exceptional niche product, zero marketing will still lead to explosive viral growth."
The same assumption under Accrue Notes's Red-Teaming mode:
Architectural breakthroughs focused on user sovereignty, deep inquiry, and lifelong compounding
| Comparison Dimension | Accrue Notes | Legacy Cloud Notes / Generic AI Apps |
|---|---|---|
| Privacy & Storage | 100% on-device SQLite + Markdown, zero intermediary servers, no account required | Mandatory login; notes stored in proprietary cloud databases with data breach risks |
| AI Costs & Transparency | BYOK (Bring Your Own Key) direct connection; transparent reasoning traces; cents per query | Expensive monthly subscriptions ($20+/mo) with opaque black-box models and rate limits |
| Connection Depth | Bi-directional links + automated entity graphs + hybrid vector/semantic search | Rigid hierarchical folders or primitive keyword-matching search engines |
| Thinking Assistance | 10D deep research matrix, mental model sandboxes, and critical red-teaming | Superficial generic conversational chat, basic spelling fixes, or shallow summaries |
| Academic LaTeX Export | KaTeX pixel-accurate math rendering and vector pipeline for lossless PDF/Word exports | Plain text only; formulas fail to render or become garbled and missing upon export |
| 3D Spatial Dissection & Math | Native 3D spatial dissection (DNA/Geology/Neuron), holographic exploded views, LiDAR physical scanning & 3D math studio | Flat 2D text and images only, zero 3D spatial dissection or 3D mathematical modeling |
| Business Model | Core free (50 notes + 5 bonus notes every month); Pro monthly subscription at $2.99/mo with cancel-anytime freedom; data never locked | Heavy recurring fees with cloud lock-in; cancellation locks you out of reading or exporting your own notes |
Core features forever free. Upgrade to Pro Annual for 30% savings with zero data lock-in
Perfect for capturing daily spontaneous insights and exploring bi-directional linking
[[bi-directional links]]The uncapped second brain built for researchers, scholars, and serious knowledge compounders
Ultimate flexibility for short-term research sprints or month-to-month access
Learn how we protect your intellectual sovereignty and personal data
Accrue Notes is a local-first bi-directional knowledge base and AI cognitive mirror crafted for lifelong learners, researchers, and thinkers. It weaves notes through [[bi-directional links]] and knowledge graphs, combined with BYOK white-box AI Q&A, mental model red-teaming, and a 10D research matrix to compound your knowledge into lifelong cognitive assets.
All your notes, attachments, entities, and vector indexes remain 100% on your local device (SQLite and sandbox documents). There is zero registration or user tracking. AI calls connect directly to your chosen provider with keys encrypted in hardware security (iOS Keychain / Android Keystore).
BYOK stands for "Bring Your Own Key". You can input API keys from OpenAI, Anthropic Claude, DeepSeek, Google Gemini, and more. Charges are billed directly by your model provider based on exact token usage (typically mere pennies per deep inquiry). Accrue Notes adds zero markup or middleman fees.
Absolutely. Except for streaming queries to your configured cloud AI models, all features—Markdown editing, bi-directional linking, entity graph browsing, local full-text search, math rendering, and PDF/Word exporting—run 100% locally and offline.
Your notes belong entirely to you. You can export all notes as standard Markdown with YAML frontmatter at any time, or back up the complete SQLite database snapshot, high-res PDF, or Word files. Seamless multi-device sync is supported via your private Apple iCloud container, to which we have zero access.
The core features of Accrue Notes are free forever (includes 50 baseline notes; after that, you receive 5 complimentary notes every month). Pro advanced capabilities are available in two flexible options: the best-value Annual Plan at $24.99/year (~$2.08/month, save >30%, most popular) and the flexible Monthly Plan at $2.99/month (cancel anytime), unlocking unlimited notes and star-graph connections, unlimited deep AI Agent consultations, all 6 curated knowledge packs, private cloud backup/sync, and academic-grade lossless exports. All subscriptions are processed directly through official app stores (Apple App Store / Google Play / Huawei AppGallery), where you can easily cancel anytime in your account settings.