iPad · Apple Pencil · iPadOS 18+

A handwritten journal for people who use software.

Write by hand. Work with everything. Penlog keeps your daily page in sync with Notion .

Download on the App Store See how it works

Made in Indianapolis.

iPad Pro showing Penlog with handwritten journal entries, typed tasks, and yellow marker highlights

How it works

One page. Every tool.

Write by hand

Pick up your Apple Pencil. Your daily page is waiting — blank, dotted, grid, or lined. Ink stays on device.

Penlog reads it

As you write, Penlog picks out your tasks and notes. No tagging, no cleanup.

Your tools loop in

Notion, Claude, and ChatGPT read your page and write back as typed blocks beside your ink. Your calendar flows in too — the day's events, right on the page.

Integrations

And also, not instead of.

Penlog doesn't replace your planning stack. It gives everything in it a window into your handwritten day.

Notion

Tasks & databases

Claude

via MCP

ChatGPT

via MCP

Apple Calendar

Events & reminders

Your agents

Any MCP-compatible tool

API & MCP

Your handwriting, addressable.

Every journal page is a REST resource. Any MCP-compatible agent can read your OCR'd text and write typed blocks alongside your ink.

GET /api/v1/pages/today

{
  "date": "2026-04-25",
  "paper": "lined",
  "tasks": [
    { "text": "Follow up on API spec", "age_days": 3 },
    { "text": "Team sync notes", "age_days": 0 }
  ],
  "events": [
    { "title": "Team sync", "time": "14:00" }
  ],
  "seeded_blocks": [
    { "origin": "claude", "content": "Briefing for today…" }
  ]
}

MCP server at mcp.penlog.app — connect any compatible agent in one step.

Available now

Because the writing is the thinking.

Write by hand. Work with everything. Penlog is on the App Store — install it and start writing.

Download on the App Store

Free to download. Requires iPad with iPadOS 18+.