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Find Hidden Patterns in a Lifetime of Journals

Quantitative journal analysis at scale—with word trends, emotional timelines, semantic themes, and AI-driven insights across thousands of entries.

Exact, Large-Scale Text Statistics

Get precise word counts, keyphrase frequencies, sentiment timelines, and trend charts—backed by deterministic counts, not LLM approximations. Works on 25+ million-word corpora without breaking a sweat.

True Information Retrieval

Search your journals using keyword and semantic search—including quoted phrases and term exclusions—across thousands of entries, with high accuracy and full provenance.

Built for Power Users, Not Prompt Gamers

Designed for diarists, researchers, lifeloggers, and quantified-self enthusiasts who want real insight from years of writing—not guided prompts or superficial mood summaries.

Recursive Summarization, Ready for RAG

Generate document-level summaries at scale, then distill them into a summary of summaries—ideal for longitudinal insight, trend condensation, or feeding into language model pipelines.

Conversational AI Interface with RAG

Explore your journals through a natural language chat interface powered by retrieval-augmented generation. Ask questions, apply prompt templates, and summarize filtered sets of documents—no coding or clicking required.

Visual Insight Tools Built for Reflection

Track emotional tone, word trends, and term evolution over time with sentiment timelines, word frequency graphs, and cleaned-up visualizations—built to surface what's changed and what keeps recurring.

👉 Explore the App

Interact with the full feature set—search, visualizations, and AI-driven analysis—using the Pepys demo diary. No login needed.

📬 Request Full Access

To upload and analyze your own journals, request an invite via contact form.

See LifeLogging.AI in Action

Getting Started Demo (No Sound)

A quick, silent tour of the app's key features.

Quick Questions

What does it do?

Advanced, large-scale journal analysis.

Read the FAQ →

Is my data private?

Yes. It's your data—fully exportable, nothing sold.

Privacy Policy →

Why invite-only?

Built and maintained solo—quality over scale.

Learn More →

Can I export my data?

Always.

Ask the FAQ chatbot →
Congratulations! You qualify for ¢50,000 free credits as a gift to you when you register. This is enough to generate 250 data visualizations, process 100 pages of single-spaced text or download 50 visualization images. Your email is only used for two-factor authentication to keep your account secure and to notify you when processing tasks have completed. We do not sell or share your data. You can delete your content or your entire account at any time. To learn more about what we offer, strike up a conversation with our FAQ Q&A chatbot! 😃