Why this exists

Two reasons, and they are the whole app

Every overlapping event gets its own warning

Other tools show the next meeting: one line in the menu bar, one notification. A call nested inside a focus block collapses into a single reminder — and you miss the other one. Here each event fires its own banner, and overlapping banners stack into separate lanes.

MeetingBar has had this exact request open since 2021.

A visual warning, not a notification

Notifications are built to be ignorable: they slide in at the edge and file themselves into a list you check later. A submarine flying across every monitor is not something you scroll past — and it never lands in Do Not Disturb.

27 skins, 4 styles

Not a submarine person? Fine.

Swap the submarine for a whale, a jet, a UFO — 27 skins across four visual styles. These are the real photos the photo style flies across your screen: everything that belongs in the water leaps out of the sea, everything that belongs in the sky bursts out of a cloud.

Every photo motif is a real thing — a real boat, a real animal, a real aircraft. Double-click one in the app and its actual story opens, fact-checked and with a source, not written from memory.

Everything else

Small app, sharp edges

All monitorsA banner before every meeting on every screen, with configurable lead time
Instant meetingOne click mints a room and opens the call
Meeting statsHow much of your week, month and year goes to meetings
Quiet modeTimed, and automatic while screen sharing
Global shortcutsTwo of them, both rebindable
AutomationScriptable via the meetingblitz:// URL scheme
Claude accessOptional and off by default: tell Claude to list, create or move events
Back to the next oneTen minutes into a meeting, the menu bar stops counting it down and shows when the next one starts
Invite textNew events put title, date and time on your clipboard. One switch turns it off

Also: export any event as .ics · Apple Reminders due today shown next to events · a second time zone in the widget · English and German, switchable live.

Honest comparison

How it compares

The macOS menu bar already has good calendar apps. Here is where this one is genuinely different — and where it isn't.

	MeetingBlitz	MeetingBar	Itsycal	Calendr
Overlapping events warn individually	yes	no (open since 2021)	n/a	n/a
Warning style	banner on all screens	menu bar title, notification	none	none
Conflict warning while creating	yes	no	no	no
Claude / MCP access	yes, optional	no	no	no
Natural-language input	yes	no	no	yes
Maturity	hobby project	5.3k stars	4.0k stars	2.3k stars

If you want the most mature, best-supported option with the widest service coverage, install MeetingBar — it is excellent, and this project started as a fan of it.

Get it

Install in two minutes

Recommended

Build it yourself

Two minutes, one script — and locally compiled software is not quarantined, so there is no Gatekeeper dance at all.

git clone https://github.com/Felixosk/meetingblitz-mac.git
cd meetingblitz-mac
./build.sh && open dist/MeetingBlitz.app

Download the ready-made app

Grab the latest release, unzip, move to Applications. It is signed with a self-made certificate, not a paid Apple developer account, so macOS quarantines it on download. This clears the flag:

xattr -dr com.apple.quarantine /Applications/MeetingBlitz.app

Understand what that command does. It tells macOS you vouch for the app yourself and skips the Gatekeeper check. Only do that for software you trust. Every line of this app's source is readable — or build it yourself and the question does not arise.

The app has no window and no dock icon — after launch, look for the submarine in the menu bar, top right. First launch walks you through calendar access and the settings:

MeetingBlitz first-launch walkthrough and settings window

Never miss the second meeting