Coming soon to Mac, iPhone, and iPad

Notes and tasks, together in Markdown.

Instantly familiar, quietly delightful, on Mac, iPhone, and iPad.

Cobble on the Mac: the sidebar of destinations, tags, and folders, the Garden notes, and the Cobblestone Path note with its four tasks above its text and a picture of a cobblestone garden path. — Mac

Cobble on iPad in landscape: the sidebar, the All Tasks overview with its notes that have tasks, and every open task grouped by note. — iPad

Cobble on iPhone showing Today: the day’s calendar events and tasks, and the daily note below them. — iPhone

It feels like it was always yours.

Cobble feels at home from your very first note, and a little better every day after.

Nothing to learnIt follows the habits your Mac, iPhone, and iPad already taught you.
Made with careEvery screen was shaped and reshaped until it felt just right.
Delight in the detailsThe longer you use it, the more small moments you’ll find to enjoy.

Plain Markdown files. Yours to keep.

Every note and every task is a plain Markdown file on your device. Turn on Cobble+ and they sync through your own private iCloud.

No account, no serverThere is no Cobble server to sign up for, and nothing tracks you.
Open them anywherePlain text opens in any editor, now and years from now.
Back up from your MacCopy everything to any folder, whenever you like.

Cobble/

Daily Notes/

Home/

Renovation/

kitchen-refresh.md

bathroom-ideas.md

Travel/

Lisbon Trip/

packing-list.md

.cobble-tasks/

k7r2m4q1.md

---
done: false
scheduledDay: 2026-11-14
---
Call the tile shop about backsplash samples

Written for each device.

The same notes and tasks, with an editor shaped for how you work on each one.

On the Mac, a fast Markdown editor

Formatting appears as you type. Headings grow, bold turns bold, and links light up, while the Markdown symbols step aside until your cursor comes back. It opens quickly and keeps up with every keystroke.

On iPhone and iPad, made for touch

Markdown symbols are fiddly on glass, so here Cobble feels like a rich-text editor. Format with a tap, drag blocks of text where they belong, and fold sections away when you’re done with them.

Notes and tasks, stacked well.

Everything Cobble does, one stone at a time.

Tasks on any note

Link any task to any note and it floats above the text, so a project’s to-dos live with its notes. Build the project system that fits the way you work.

Plan your day

Today puts your tasks beside your calendar, with a place for this evening. Repeating tasks, timed alerts, and tags are built in.

Inbox Today This Evening Upcoming Someday Logbook

Your calendar and Reminders, together

Your calendar’s events sit beside your tasks, and the Inbox brings over what’s waiting in the Reminders app, so everything is in one place.

Every task in one view

All Tasks gathers every open task by when it’s due and the note it belongs to, and lists the notes that still have open checklists.

Daily Notes

A note for every day gathers the day’s tasks and events, ready for your plan. Write a date in any note and it links to that day.

Cobble+

Sync across your devices

Mac, iPhone, and iPad stay in step through your own private iCloud, quickly and reliably. There is no Cobble server.

And more

Quick Entry with ⌃Space Share from any app Home Screen and Lock Screen widgets Quick Find and full-text search Folders, Areas, and tags Photos, PDFs, scans, and tables A whiteboard on iPhone and iPad Works with Claude Cobble+ · Mac Themes, fonts, and sizes

Be first to know.

Cobble is coming to the App Store for Mac, iPhone, and iPad.