Open Source AI-Powered Self-Hosted

Self-Host Your
Second Brain

Write natural language notes. Get structured, queryable data back — powered by AI extraction, stored in your own database. Open source and self-hosted.

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2026-03-09.md
Sunday March 9
Trained legs today. Felt strong.
Squats 3x8 @ 225 lbs
Romanian deadlifts 3x10 @ 185
Leg press 4x12 @ 360
Salmon bowl for lunch,
chicken stir fry for dinner.
Sleep: 7.5 hours · solid
Energy: 8/10 · Mood: great
AI extracts
12 data points
Dashboard
Exercises
4
Sleep
7.5h
Calories
2,180
Mood
8/10
Activity (4 weeks)
Weekly Volume

How It Works

Three steps. Zero friction.

From raw thoughts to structured data in seconds.

01

Write Naturally

Just type. Workouts, meals, meetings, mood — anything goes.

2026-03-09.md
Sunday March 9
Trained legs today. Felt strong.
Squats 3x8 at 225 lbs.
Romanian deadlifts 3x10 at 185.
Leg press 4x12 at 360.
Salmon bowl for lunch,
chicken stir fry for dinner.
Sleep: 7.5 hours · solid
Energy: 8/10 · Mood: great
02

AI Extracts Structure

Your AI provider reads your notes and extracts structured data automatically.

Exercise
Squats · 225 lbs · 3x8
Exercise
RDL · 185 lbs · 3x10
Exercise
Leg Press · 360 lbs · 4x12
Sleep
7.5 hours · solid
Mood & Energy
great · 8/10
Nutrition
Salmon bowl, chicken stir fry
03

Query Everything

Ask questions in plain English, get data-backed answers instantly.

"What's my squat progression this quarter?"
Squat Progression - Q1 2026
185 lbs → 225 lbs · +22% in 3 months

Bring Your Own AI

Your keys. Your choice.

Connect any AI provider. No vendor lock-in, no middleman API charges. You control the intelligence layer.

Anthropic

Claude 4 family

OpenAI

GPT-4o & o1

Ollama

Run locally

+

+100 More

Any OpenAI-compatible API

Features

Everything you need. Nothing you don't.

Built for people who want powerful tools without giving up control.

🔒

Self-Hosted

Run on your own hardware. Your data never leaves your infrastructure.

✍️

Markdown Editor

WYSIWYG editing powered by Milkdown. Beautiful, distraction-free writing.

🧠

AI Extraction

Your AI reads notes and extracts exercises, nutrition, sleep, and more.

🔍

NL Queries

Ask "What was my average sleep last month?" and get instant answers.

📊

Dashboards

Visualize trends and patterns. Track progress with auto-generated charts.

📋

Personal Kanban

Task management synced to your daily notes. To Do, In Progress, Done.

📅

Calendar View

Browse notes by date. Heatmap shows your activity at a glance.

🔌

Works Without AI

Full notes app even without an API key. Add AI whenever you want.

Your Day, Structured

Daily notes that work for you.

One-click daily notes with a wizard. Kanban tasks synced to your notes. Everything connected.

Daily Note Wizard March 9, 2026
Workout Strength — Legs
Sleep
★★★★★ 8/10
Energy 9/10
Mood 😁
Top priorities
☐ Finish API refactor
☐ Review pull requests
☐ Grocery run
Personal Kanban
To Do
Grocery run
Call dentist
In Progress
API refactor
Done
Review PRs
Morning workout
Tasks sync with your daily note checkboxes

Query Your Life

Ask anything. In plain English.

Your notes become a personal database. Ask questions and get instant, data-backed answers.

You ask
"How many times did I squat over 200 lbs this month?"
Answer
You squatted over 200 lbs on 6 days this month, with your best session at 225 lbs x 8 reps.
You ask
"What's my average sleep when I train legs?"
Answer
On leg days you average 7.2 hours of sleep, vs 6.8h on other days. Your mood is also 0.5 points higher.
You ask
"Show me what I ate this week"
Answer
Mon: Oatmeal, chicken salad, pasta · ~2,100 cal
Tue: Eggs, salmon bowl, stir fry · ~2,350 cal
Wed: Shake, burrito, soup · ~1,900 cal
Avg: 2,117 cal/day · Protein: 142g avg
You ask
"On days I sleep 8+ hours, how's my energy?"
Answer
When you sleep 8+ hours, your energy averages 8.4/10 vs 6.7/10 otherwise. That's a 25% boost.

Database

Two engines. One interface.

Choose the right storage for your setup. Switch between them without changing your code.

🦆

DuckDB

Local Mode
  • ✓ Zero configuration — just a file
  • ✓ Blazing fast analytical queries
  • ✓ Perfect for single-user setups
  • ✓ No external database needed
  • ✓ Portable — copy one file to back up
or
🐘

Postgres

Cloud Mode
  • ✓ Production-ready scaling
  • ✓ Multi-user with Clerk auth
  • ✓ Connect to any Postgres instance
  • ✓ DuckDB analytics cache layer
  • ✓ Remote access via Tailscale

Ready to own
your data?

Join a growing community of developers who believe notes should be structured, queryable, and self-hosted.

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