Penlog — A journal that can keep plans.

iPad · Apple Pencil · iPadOS 18+<br>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<br>Made in Indianapolis.

Watch<br>See it work, start to finish.

How it works<br>One page. Every tool.<br>01 Write by hand<br>Pick up your Apple Pencil. Your daily page is waiting — blank, dotted, grid, or lined. Ink stays on device.

02 Penlog reads it<br>As you write, Penlog picks out your tasks, events, and notes. No tagging, no cleanup.

03 Your tools loop in<br>Notion, Claude, ChatGPT, Apple Calendar — they see the same page you do. Changes flow back in as typed blocks beside your ink.

Integrations<br>And also, not instead of.

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

Notion →<br>Tasks & databases

Claude<br>via MCP

ChatGPT<br>via MCP

Apple Calendar<br>Events & reminders

Your agents<br>Any MCP-compatible tool

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

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

Available now<br>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<br>Free to download. Requires iPad with iPadOS 18+.<br>No iPad handy? Leave your email and we'll keep you posted.<br>Notify me

Made in Indianapolis.