Version 1.11.1 · released November 1, 2026

Your day, in plain Markdown. Unfinished tasks carry forward.

Daymark is a local-first daily notebook. Each day is a Markdown note; whatever you didn't finish moves to today with its history, and tasks that keep slipping get a gentle warning. Habits, a calendar to plan ahead, notes and home-screen widgets, on the web and on Android.

Download the Android app Release notes

The APK comes from the GitHub release. The web app runs on a server you host yourself.

Daymark's full-width Today workspace with the five-part side menu, Search and Settings buttons in its Title part, grouped tasks and a day-at-a-glance panel

What it does

Ideas can wait

Keep undated tasks in Backlog with category labels. Pick a day when you are ready; until then they stay out of daily counts and warnings.

A side menu with room to write

Desktop navigation stays beside your work, on the left or right. Notes focus mode hides it. Move tasks between sections without retyping them.

Tasks that carry forward

Unfinished tasks move to today automatically, keeping their history. Finish one late and Daymark records the day it was really done, and closes its older copies.

Daily habits

Set your habits once and tick them each day. Streaks, missed-day warnings, and a habits widget on your home screen. Settings lets task aging and habit warnings count weekdays, weekends or all week. All week is the default; warnings stay visible every day. Android task widgets follow your warning thresholds and aging warnings switch too.

Calendar to plan ahead

Month and week views with every task of the day. Open any day, plan future ones, and drag tasks to reschedule.

Notes with room to write

A rich editor with tables, synced pictures, Mermaid diagrams and [[links]] with autocomplete. Paste from AI chats to keep headings, lists and code. Templates and focus mode give you room to write. Create handwritten notebooks on lined or grid pages with a pen, then read them on other devices. On typed notes, turn on Highlighter and drag the pen across words; the highlights sync too.

One column for your notes

Folders and the notes inside them live in a single column with search that filters in place, pinned notes on top, drag and drop, and a Move to folder picker on phones. Use Minimize notes column for the shortcut strip and Expand notes column to return. Folders export as real directories.

Related notes, one click away

While you write, Daymark suggests notes that share distinctive words. Link adds a [[wiki link]]; Not related hides the pair. Suggestions are worked out on your device.

A graph of your notes

See links, suggestions and tags as a knowledge graph. Filter by folder or tag, focus on one note's neighbourhood, or use the keyboard-friendly list view.

Make it yours

Light or dark, your own colours, background photos and text size, all kept readable.

Yours to keep

Plain Markdown files you can export at any time, offline by default, no telemetry. Sync between your devices through a server you run.

Screenshots

Daymark's full-width desktop workspace beside the five-part side menu with its Settings button — A side menu, left or right

Undated Backlog ideas grouped into Home, Work and unlabelled categories with pick-date controls — Ideas wait in Backlog until you pick a day

Notes with one navigation column of folders and notes by title, the editor and the Related panel suggesting another Java note — One Notes column, the editor and Related

Knowledge graph of notes with a folder filter, dashed suggestion lines and a detail pane — A knowledge graph, filtered by folder

Notes with headings, checkboxes, a table, a callout and the editing toolbar — Rich Notes, saved as Markdown

The Habits bar opened on Today, with streaks and a missed-habit warning — Daily habits with streaks

Calendar week view with one full-width row per day listing every task — A week you can read at a glance

Calendar month view with task counts per day — Month view for planning ahead

Notes in focus mode with a full-height editor — Notes in focus mode

Appearance settings with theme, colours and background photos — Your look, kept readable

Search across days and notes — Search everything

Phone Notes: search, New note and New folder above a tree of folders with their notes — Notes on your phone: the column, then the editor

Phone Related sheet with a suggested note, Link and Not related buttons and the linked notes — Related notes on your phone

Phone Backlog with full-width date controls — Backlog on your phone

Daymark on a phone: Today with tasks, Search and a Settings gear in the top header and the bottom tab bar — On your phone: five bottom controls and Settings in the top header

The week view on a phone, one stacked day after another — The week on a phone

Get Daymark

Android

Install the APK from the latest release (1.11.1). It includes the task and habits home-screen widgets. For the one-time switch to the new signing key: sync (or make a backup) first, uninstall the old app, install the signed APK, then sign in again. Android refuses to update an app signed with a different key. Later updates signed with the same key keep your data.

Download the APK

Web app and sync server

Run the server with Docker and open it in any browser; it installs as an app and works offline. Your phone and computers sync through it.

Setup guide

License

Daymark is source-available under the PolyForm Noncommercial License 1.0.0. You may use, copy, change and share it for any noncommercial purpose: personal use, study, research, hobby projects, and use by charities, schools and government bodies. Commercial use needs permission from the copyright holder; ask through GitHub.