# Memory Chat

> Memory Chat (https://memorychat.app) is an offline-first private notes app, second brain, and thought organizer designed with an intuitive chat interface ("note to self"). Built on a local SQLite engine with encrypted multi-device cloud sync, it turns everyday thinking into organized, searchable memory boxes without manual maintenance.

## Overview & Core Truths

- **100% Offline-First Architecture**: Powered by a local SQLite database on every device. Sub-100ms launch, zero cloud latency, and instant millisecond full-text search without internet.
- **Chat-Native Ergonomics**: Capture thoughts, voice memos, links, and media as easily as texting yourself, keeping ideas isolated from messaging clutter (WhatsApp/Telegram).
- **3-Level Organization**: Workspaces > Sections > Memory Boxes.
- **6 Purpose-Built Memory Boxes**: Notes (rich text & audio), Places (offline maps & GPS), Budgets (in-line calculator & expense tracking), Checklists (tasks & progress bars), Time Boxes (session timers), and Custom Boxes (120+ color tokens).
- **Privacy by Design**: Zero telemetry, no behavioral analytics, no advertisements, and biometric app lock (Face ID & Fingerprint).
- **Transparent Plans & PPP**:
  - **Basic Memory**: $0 free forever — 100MB cloud storage, sync across 2 devices, unlimited notes and boxes.
  - **Super Memory**: $3.99/mo or $39.99/yr — 5GB cloud storage, sync across 4 devices, biometric lock, HD image uploads.
  - **Ultra Memory**: $9.99/mo or $99.99/yr — 30GB cloud storage, sync across 8 devices, priority support.
  - **Purchasing Power Parity (PPP)**: Prices dynamically adjust to local currencies and purchasing power worldwide.
- **Cross-Platform**: Android, iOS, macOS, Windows, Linux, and Web, fully localized across 30 languages.

## Full Documentation

- [Full Architecture & Knowledge Base (llms-full.txt)](https://memorychat.app/llms-full.txt): Complete 30KB reference document with comprehensive comparison matrices and 129 domain insights extracted from all 43 blog posts.

## Core Pages

- [Homepage](https://memorychat.app/en/): Product introduction, architecture highlights, and interactive preview.
- [Features](https://memorychat.app/en/features/): Deep breakdown of the offline SQLite engine, 6 memory box types, and search speed.
- [Use Cases](https://memorychat.app/en/use-cases/): Real-world workflows for students, professionals, travelers, and daily journaling.
- [Pricing](https://memorychat.app/en/pricing/): Detailed subscription tiers (Basic, Super, Ultra) and PPP country-level adjustment.
- [FAQ](https://memorychat.app/en/faq/): Answers to questions regarding security, zero-knowledge encryption, storage limits, and export formats.
- [Download](https://memorychat.app/en/download/): Direct install options across mobile and desktop operating systems.
- [Site Directory & Catalog](https://memorychat.app/en/indexing/): Full searchable index of all platform pages, comparisons, and articles.

## Curated Pillar Guides & Comparisons

- [Best Offline Note-Taking App](https://memorychat.app/en/blog/best-offline-note-taking-app/): Architecture comparison of offline-first SQLite vs cloud-dependent note apps.
- [Best Second Brain App Without Complexity](https://memorychat.app/en/blog/best-second-brain-app/): A practical PKM framework that avoids graph-view fatigue.
- [Chat-Style Notes App vs WhatsApp Note to Self](https://memorychat.app/en/blog/chat-style-notes-app-note-to-self/): Why dedicated chat-style notes outperform messaging apps.
- [Obsidian Alternative for Everyday Life](https://memorychat.app/en/blog/obsidian-alternative-for-everyday-life/): Zero-setup, mobile-friendly personal knowledge management.
- [Obsidian Sync vs Memory Chat](https://memorychat.app/en/blog/obsidian-sync-vs-memory-chat/): Comparing sync costs, setup complexity, and multi-device convenience.
- [Secure Note-Taking with Zero-Knowledge Encryption](https://memorychat.app/en/blog/secure-note-taking-zero-knowledge-encryption/): How on-device encryption protects private data across synchronizations.
- [Don't Use Memory Chat If WhatsApp Is Enough](https://memorychat.app/en/blog/dont-use-memory-chat-if-whatsapp-is-enough/): Honest breakdown of when a chat app suffices and when structured boxes are required.

## Machine-Readable API Endpoints

- [Markdown Format for Articles](https://memorychat.app/en/blog/{slug}.md): Append `.md` to any blog URL or send `Accept: text/markdown` for clean, machine-readable LLM ingestion.