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LostInNotes

LOST NO MORE

Build your digital Second Brain with the help of Artificial Intelligence. Gather knowledge, connect facts and reclaim your time with automatic analysis. Everything in a secure, encrypted environment.
START NOTING NOW

Ask your knowledge base

Turn your personal library into a private search engine. Unlike standard note-taking apps, LostInNotes connects the dots for you. Just ask a question and get answers based purely on your data.

Second Brain Architecture

We don't just store data; we connect it. Our system automatically links related ideas across your entire library, building a neural network of your mind.

Watch LostInNotes in action

Your Knowledge, Anywhere.

Whether you're exploring ancient ruins or sketching out a business plan in a café in Tokyo, LostInNotes keeps your insights connected, secure and instantly accessible.

Global network of encrypted AI note servers

Always synced. Always secure.

Why choose an AI notebook?

Most notes end up in digital oblivion—captured once and never seen again. LostInNotes gives your data a new life. By combining state-of-the-art AI models with global-scale infrastructure, we transform your static thoughts into a dynamic, secure and intelligent knowledge base.

Cutting-Edge AI at Your Service

When you use LostInNotes, you gain guaranteed access to the world’s most advanced AI models. Our system doesn't just store text; it understands it. AI instantly generates Smart Tags and summarizes your content automatically.

Talk to Your Knowledge

We convert every note into a high-dimensional vector. Using integrated Speech-to-Text (STT) and Text-to-Speech (TTS), you can verbally ask questions about your past notes and receive instant, spoken answers.

Global Reach, Local Speed

Your notes are encrypted and strategically distributed across multiple geographic regions. This ensures lightning-fast access and low latency while maintaining bank-grade encryption.

Frictionless Security

Forget about managing complex passwords. We use Google and Facebook OAuth for a seamless login experience. You get world-class security combined with the convenience of one-click access.

Save Once, Benefit Forever

With LostInNotes, you only need to capture a thought once. From that point on, we take care of the rest—ensuring your data is safe, organized by AI and always ready to provide you with insights.

Beyond Keywords: Meet Vector Intelligence

Traditional apps use keyword search—if you don't remember the exact word, your note is lost. LostInNotes is different. We transform your thoughts into high-dimensional vectors.

This allows our AI to understand the meaning behind your words. It’s not looking for text matches; it’s looking for ideas. This is how your Second Brain truly starts to think like you do.

#SemanticSearch #VectorEmbeddings #AISecondBrain
Vector Intelligence
LostInNotes AI interface
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Simple, Transparent Pricing

Jot

$0

Your digital archive


  • Up to 100 Notes
  • Cloud Sync
  • Simple & Fast Editor
  • AI Features
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RECOMMENDED

Insight

$10/mo

Unlock your Second Brain


  • Full Vector Search
  • Talk to Your AI Assistant
  • Unlimited Notes
  • Semantic Auto-Tagging
UPGRADE NOW

Questions & Answers

Only you. Your notes are strictly private and linked to your secure OAuth identity (Google/Facebook). No one else can access them unless you explicitly use the "Share" feature to generate a public link for a specific note.

No. We use enterprise-grade AI models hosted on secure, isolated infrastructure. This ensures that your data is never used to train global models. Your notes remain strictly private.

When you ask a question, our system retrieves only relevant fragments of your notes to provide context. This data is processed in a temporary session and is forgotten by the AI model immediately after responding.

Yes. We use bank-grade encryption for all data, both in transit and at rest. Your information is distributed across global secure regions to ensure fast access and maximum safety.