Mac Calendar Widgets — InstaCal for macOS

Mac calendar widgets, in short

What you get: Four widgets — Next Event, Today, Month, and Up Next + Calendar — installed with the app, so there is nothing extra to buy or enable.
Where they live: The desktop and Notification Center, the same places every other macOS widget goes. Right-click the desktop and choose Edit Widgets to add one.
Multi-day events: Drawn as one continuous bar across the days it covers, using the same layout engine as InstaCal's own Month view. Other calendar widgets draw a dot per day.
Reminders: Tick one off in the Today widget without opening anything. Tick it again to bring it back — it is a toggle, not a one-way trip.
Appearance: Each widget takes a Theme of its own: System, Light or Dark. A widget sits on a wallpaper, not in an app, so the appearance that reads well there has nothing to do with the time of day.
Requirements: macOS 14 Sonoma or later, on Apple silicon or Intel.

The four widgets

What each one is for.

These are the names as they appear in the macOS widget gallery, which is where you will be looking for them.

	Sizes on Mac	What it shows
Next Event	Small	Your next event and a countdown that stays live, so it never needs a redraw to stay honest.
Today	Medium, Large	What is left of your day. Tap a row to open it, or complete a reminder right there in the widget.
Month	Medium, Large	The month at a glance, with multi-day events drawn as continuous bars rather than dots.
Up Next + Calendar	Medium, Large	Your next events and tasks beside a month you can tap into. The configurable one — see below.

The Lock Screen widgets, the Live Activity and the Quick Add control are iPhone and iPad features and are covered on the iPhone and iPad page.

InstaCal's full calendar window in dark mode: the agenda sidebar, a month grid with Day, Week, Month, Quarter, Year and List view options, and an event's details open in the right-hand inspector

Spanning bars

A trip is one thing, so it should be one bar.

Every other calendar widget marks a multi-day event with a dot on each day it touches, which asks you to notice that Tuesday, Wednesday and Thursday are the same conference. InstaCal runs the app's own spanning-bar layout inside the widget, so it draws what is actually true: one bar, across three days. Pictured is InstaCal's full Month view — the Month widget draws its grid with the same engine.

The same layout engine as InstaCal's full Month view
Continuous bars for anything longer than a day
Week numbers, weekend shading and current-week highlight, all optional
Five month styles: dots, bars, heat map, plain or timeline

The details that decide it

Four things a calendar widget usually gets wrong.

None of these are headline features. They are the reasons a widget either earns its place on your desktop or gets removed after a week.

It admits when it is out of date

If the underlying data has expired, the widget says Out of date rather than confidently showing you yesterday. A calendar widget that lies quietly is worse than one that asks to be opened.

Every tap lands somewhere specific

Tapping a day opens that day, and tapping an event opens that event — not wherever InstaCal happened to be when you last closed it.

Ticking a reminder is a toggle

Complete one from the Today widget, change your mind, tap again and it comes back. Most widgets make completion a one-way action you can only undo inside the app.

It costs nothing to refresh

The widgets read a small shared snapshot rather than querying your calendar database directly, so refreshing them does not wake the calendar store or spend a permission check.

Up Next + Calendar, configured

What is listed: Events, tasks and all-day banners, each independently switchable, so the widget can be a pure task list or a pure agenda.
The month beside it: Dots, spanning bars, a heat map, plain numbers or a timeline — and the heat map can count only the days you are actually busy.
Which side: The calendar sits on the left or the right of the list, whichever suits where the widget lands on your desktop.
Rolling over to tomorrow: Never, as soon as today is finished, or after an hour you pick. “Nothing left today” is true and useless all evening, which is exactly when people check what the morning holds.
Text size: Small, medium or large, independent of the system setting.
Calendar decoration: Week numbers, weekend highlighting and current-week highlighting, each on or off.

Why the theme is per widget, not per Mac

macOS gives you one appearance for everything, which is the right answer for apps and the wrong one for widgets. A widget does not sit in a window; it sits on your wallpaper. A light widget on a dark wallpaper is the unreadable one at noon, and switching your whole Mac to dark mode to fix a single widget is not a trade anybody should have to make.

So each InstaCal widget carries its own Theme setting — System, Light or Dark. Leave it on System and it follows the Mac, as you would expect. Set it explicitly and that widget stops caring what the rest of the machine is doing.

FAQ

Questions about the Mac widgets

Which calendar widgets does InstaCal add to macOS?

Four: Next Event (small), Today (medium and large), Month (medium and large) and Up Next + Calendar (medium and large). They are installed with the app — right-click your desktop, choose Edit Widgets, and search for InstaCal.

Can I complete a reminder from the widget?

Yes. The Today widget completes a reminder in place, without opening InstaCal, and tapping the same reminder again marks it not completed. Nothing is lost if you tick the wrong row.

Do multi-day events show properly?

Yes, and this is the main thing that separates InstaCal's Month widget from the alternatives. A three-day event draws as one continuous bar across those three days, using the same layout code as InstaCal's full Month view. Most calendar widgets draw an unrelated dot on each day instead.

Can a widget be dark while the rest of my Mac is light?

Yes. Every InstaCal widget has its own Theme setting — System, Light or Dark — because what reads well on a wallpaper is a property of the wallpaper, not of your system appearance. Edit the widget and pick the one you want.

Are these the same widgets as on iPhone?

The same four, plus more on iPhone and iPad: Lock Screen widgets, a Live Activity for the next event, and a Quick Add control for Control Center and the Action button. Those are iOS and iPadOS features — see the iPhone and iPad page. The Mac gets the four desktop sizes.

What do the Mac widgets require?

macOS 14 Sonoma or later, which is also what InstaCal itself requires, so if the app runs the widgets are available.

How much does InstaCal cost?

InstaCal is $29 once. One App Store purchase includes the Mac, iPhone, iPad and Apple Watch apps. There is no subscription, separate mobile purchase, Pro tier, InstaCal account or in-app purchase.

Does InstaCal collect any data?

No. InstaCal contains no analytics and no tracking. Your Google and Microsoft tokens live in Apple's Keychain, and your events sync directly between your device and your calendar provider — there is no server of ours for your data to visit.

Put the month on your desktop, bars and all.

Four native widgets, included with the app. $29 once.

Download on theMac App Store

$29 once. One purchase includes InstaCal for Mac, iPhone, iPad and Apple Watch. No subscription, InstaCal account or ads.

Keep exploring

A calendar widget that draws the whole trip, not a dot.