
I’m building Penlog, a handwritten iPad journal for people who use software.
The thing I kept wanting was simple: I like planning by hand, but the rest of my day lives in tools — Notion, calendar, Claude, ChatGPT, task databases. My handwritten page was the one place none of that software could really see.
So Penlog starts with a normal daily journal page. You write with Apple Pencil. As you write, Penlog picks out tasks, and notes, keeps the original page attached, and lets the useful pieces show up in the tools you already use. Each morning you can seed the day's page with your latest open tasks and calendar events.
What’s working now:
• handwriting (even my chicken scratch) converted and stored as text
• tasks and notes pulled out of the page
• two-way Notion task sync
• the original handwritten page stays as the source
• API / MCP access so agents can read your journal too
It’s in TestFlight now, free during beta. iPad + Apple Pencil required.
I’m curious how other people handle this today: if you think or plan by hand, does that writing make it back into your software anywhere — or does it mostly stay trapped on the page?