Memex is the open-source
AI journal app for your real life
An open-source AI journal that turns text, photos, and voice into structured timeline cards — and reveals patterns you didn't know were there. Local-first. Bring your own LLM.
AI-powered features that
organize your life automatically
Multi-Modal Recording
Text, photos, voice journal — capture in a single flow. Long-press to record audio. Auto EXIF extraction, on-device OCR and image labeling.
Smart Timeline Cards
AI agents auto-organize your records into typed cards: tasks, events, metrics, people, places, galleries, articles, transactions, and 15+ more types.
Insight Engine
Cross-record patterns surface as trend charts, radar maps, timelines, highlight quotes, composition breakdowns, and narrative summaries.
Pure Markdown Storage
All records stored as interconnected Markdown files. One-click export, zero vendor lock-in. Your data is always portable.
Bring Your Own LLM
OpenAI, Claude, Gemini, Ollama, and 10+ providers. Your API key, your choice. Prompts go directly to the provider — we never see your data.
Backup & Sync
iCloud Drive, custom folder, or app storage. One-tap full backup and restore.
See Memex in action
From raw notes to
personal knowledge management
Record anything
Text, photos, voice — just throw it in. No need to think about categories or structure.
AI auto-organizes
Multi-agent AI turns your records into structured timeline cards — tasks, events, metrics, people, and more.
Insights emerge
Patterns across your records surface as charts, timelines, and narratives. Connections you didn't see before.
Local-first & open source.
Your data never leaves your device
Memex is a local-first, open-source AI journal. All your records, cards, and knowledge stay on your phone. You bring your own LLM — your prompts go directly to your chosen provider. We never see your data, your API keys, or your prompts.
Compatible with OpenAI & Anthropic APIs — supports virtually any LLM provider
Frequently Asked Questions
What is Memex?
Memex is an open-source, local-first AI journal app for iOS and Android. You capture text, photos, and voice — a multi-agent AI system automatically organizes your records into structured timeline cards, extracts knowledge using the P.A.R.A. method, and surfaces insights across your entries.
How is Memex different from other journal apps?
Unlike Day One, Notion, or Apple Journal, Memex uses AI agents to auto-organize your records — you don't manually tag, categorize, or structure anything. It's also fully open source, local-first, and supports 12+ LLM providers including Ollama for fully offline use.
What does 'bring your own LLM' mean?
Memex doesn't provide the AI model. You connect your own — OpenAI, Claude, Gemini, Kimi, Qwen, Ollama, and more. Your prompts go directly from your device to your chosen provider. We never see your data or API keys.
Is my data private?
Yes. Memex is local-first by design. All records, cards, and knowledge are stored on your device as Markdown files and a local SQLite database. Nothing is uploaded to any server. You can back up to iCloud Drive or a custom folder.
Can I build custom AI agents in Memex?
Yes. Memex includes a custom agent system where you can create your own AI agents with event-driven triggers, custom prompts, JavaScript execution, and inter-agent workflows — all running on your phone.