Native calendar for macOS

Every calendar.
One clear course.

Helm brings your Google calendars together in a focused Today view and a calm Monday–Friday week—without turning your schedule into another noisy dashboard.

No hosted backend, analytics, advertising, AI integration, or Gmail access.

Helm app icon
Helm — Week
This weekNovember 9–13
MON 9TUE 10WED 11THU 12FRI 13 9 AMWeekly planning 10Design review 11Coffee with Alex 12 PMTeam lunch 1 2Focus timeProject check-in
Native macOS app
Multiple Google accounts
Local-first data
Thoughtful reminders

Designed for the day ahead

Your schedule, without the static.

Helm keeps the parts of a calendar you use all day close at hand, while leaving advanced controls in Google Calendar when you need them.

01

All of your accounts, composed into one view.

Connect multiple Google identities, choose the calendars that matter, and see them together without losing their account or color context.

02

A Today view built for momentum.

See what is happening now, what comes next, and the meeting link you need—without hunting through a full month grid.

03

Edit without breaking stride.

Create, update, move, and delete events from Helm, with conflict protection against newer Google Calendar edits.

04

Reminders that know when to step forward.

Get a normal notification before a meeting and an optional, prominent interruption shortly before it starts. Helm automatically excludes all-day events, holidays, birthdays, declined invitations, and events marked free.

Privacy by architecture

Your calendar does not become our business.

Helm connects directly from your Mac to Google. There is no Helm cloud service sitting in the middle, and no behavioral analytics watching how you use the app.

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Stored on your MacCalendar data is cached locally so the app remains fast and useful between refreshes.
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Credentials protected by macOSRelease builds keep OAuth credentials in the macOS Keychain.
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No secondary useNo advertising, data brokerage, AI training, or sale of calendar information.
A direct, local data pathWhat happens when Helm synchronizes
Helm logo
GoogleCalendar APIYour authorized data
macOS appHelmSync and display
Your MacLocal storageCache + Keychain

No Helm-hosted backend receives your account or calendar content.

Keep a steadier hand on your week.

Helm is a focused, private calendar built for people whose time is spread across more than one Google account.

View the project