Void Calendar · AI calendar & time-blocking for Mac
Turn ideasinto time.
Void Calendar brings AI, calendars, tasks, notes and focus together on your Mac. Tell AI what needs doing — it works around your meetings and finds time that is actually free.
Free public beta · Apple Silicon & Intel · macOS 13+ / 13.4+ · Works with iCloud, Google and Outlook calendars
Product preview
Not a video. The real thing.
Scroll to bring the app into view, then click around: capture an idea, ask the AI, start a focus session.
How it works
From a passing thought to done.
Five steps, one app. Capture, plan, schedule, focus and reflect without switching tools.
01Capture it before it slips
Press C anywhere in the app and pick Idea, Task or Calendar. Tasks land in your list, ideas go to notes — plan them later.
02Goals become right-sized tasks
Describe the week in one sentence. AI breaks long work into blocks that never exceed the limit you set.
03Time blocks in time that is truly free
AI reads your calendars and deadlines, leaves buffers around meetings, and proposes blocks for you to confirm before anything is written.
04Focus, right from the notch
Start a Pomodoro from any block. The countdown stays in the menu bar and on Void Island, and each round is logged automatically.
05Leave a note that stays connected
Link notes to tasks and events with [[ ]]. Backlinks, daily notes and a block editor keep the context next to the work.
Press C anywhere in the app and pick Idea, Task or Calendar. Tasks land in your list, ideas go to notes — plan them later.
AI scheduling
Say what needs doing. Your calendar handles the rest.
AI reads your events, tasks and deadlines, then proposes time blocks. Every change arrives as a proposal you confirm.
It asks before it acts
Changes to calendars, tasks and notes always arrive as proposals. Nothing is written until you confirm.
Every step can be undone
Review before-and-after changes, then undo all, keep all, or undo one step.
Bring the AI you already use
Works with AI tools installed on your Mac, or any OpenAI-compatible endpoint and the Anthropic API with your own key.
We don’t charge for AI
Requests go from your Mac straight to the provider you chose. Any usage fees are theirs, at their prices.
A meeting just came up.
Tell AI how to adjust.
Ask AI to move, suggest another time, or split the work. Review the proposal before confirming.
Ask AI for the next free slot, then review and confirm
Focus, then leave a note when you finish.
Start a Pomodoro from a time box and see the countdown in the menu bar. When it ends, your actual focus time is recorded against that time box. You can leave your own notes, too.
Scheduled around your rhythm.
Tell AI when you wake up, when you focus best and how easily you get distracted. Or start from a template and see how the same day changes.
Short blocks and generous buffers. Disruptions get split and re-planned, with no nagging.
Works with
Connected to what you already use.
Two-way sync with the calendars you rely on. No migration, no new account required.
Apple Calendar- iCloud Calendar
- Google Calendar
- Outlook
Apple Reminders
Apple Notes import- Google Meet
- Zoom
FaceTime
Apple Maps- CalDAV
All the essentials, done right.
Local-first
Events, tasks, notes and chats are saved on your Mac first, and the app works offline without an account.
Keys stay on this Mac
Calendar passwords, tokens and API keys live in an encrypted local vault and are never synced.
Find anything with ⌘K
One search across events, tasks, notes and plugins, with keyboard shortcuts for every page.
Meetings, one click away
Join buttons for Google Meet, Zoom and FaceTime links, plus reminders before meetings start.
Signed, notarized, auto-updated
Developer ID signed and notarized by Apple, with quiet updates inside the app.
Real recurring events
Repeating events sync as real series with Google, Outlook, iCloud and Apple Calendar.
Install only what you need.
Plugins live on your calendar: focus timers log to time boxes, GitHub issues become tasks to schedule, and coding work can be handed to AI by time box.
Browse all plugins
Turns a time box into a focus timer and logs it when done.
Give this week real time.
Free to download. Connect the calendars you already have and start planning in minutes.
Apple Silicon & Intel · macOS 13+ / 13.4+
Void Calendar is an AI calendar and time-blocking app for Mac, made by Void Vision. It brings calendars, tasks, notes and focus together, and helps you fit work around your existing events.
About Void Calendar →From the blog · Comparisons
Find your way of working.
A closer look at the tools you already use, and where Void Calendar fits.
vs
Notion
Write down how to start, keep what you learn, and let AI turn your notes into scheduled work.
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Motion
AI can reschedule time. I also want the steps, material, and previous records to come along.
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Morgen
Seeing the whole day matters. Starting work also needs the material, steps, and feedback.
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TickTick
See task dependencies, plan time with your AI, and hand work over through plugins.
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Google Tasks
Quick capture is useful. Larger tasks need room for instructions, material, and mistakes.
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Todoist
Keep capture light and execution clear. Lists, course reports, and the notes behind the work.
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Microsoft To Do
I like My Day’s lightness, and want large tasks to become steps that fit today.
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Trello
A board shares progress. I also want my steps, notes, and working time connected.
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OmniFocus
OmniFocus helped with complex work, but uncommitted thoughts filled my Inbox. Void Calendar starts with Idea.
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Things 3
My lightweight tasks stay in Things 3. I also want to keep the context, lessons, and mistakes behind the work.
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Org mode
My experience with Org mode configuration, synchronization, mobile use, and moving to OmniFocus.
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Obsidian Tasks
Capture tasks where the thought occurs. After a query finds them, reserve time to do them.
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