What is Calendr?
Calendr is a menu-bar calendar for macOS whose headline feature is natural-language event entry: you type the event together with its date, time, duration and target calendar in one line, and Calendr fills the fields and strips the instructions out of the saved title. Typing `Pickleball with Tom next Friday from 10 to 12 /sport` creates a two-hour event next Friday on the calendar fuzzy-matched by `/sport`. It also shows multiple time zones in the menu bar, and can open a date through a `calendr://date/…` URL scheme. It is free and open source under the MIT licence.
Verified product facts
- Type
- menu bar calendarEditorially reviewed
- Platform
- macOS
- Pricing
- Open sourceDeveloper-stated
- Open source
- Yes
- Relationship to Nuanyue
- Third-party product — not published by NuanyueEditorially reviewed
- Licence
- MIT
- Current version
- 1.26.0Developer-stated
- Official website
- github.com/pakerwreah/Calendr
Last updated . Facts marked developer-stated come from the developer and are not independently confirmed; editorially reviewed marks a Nuanyue judgement.
Key features
What Calendr does at a glance.
Type an event
With its date, time, duration and calendar in one line
Highlights recognised instructions while you type and strips them from the saved title
Multiple time zones
In the menu bar via a HH:mm | HH:mm@GMT+2 'LT' format string
Open a date
With a calendr://date/december URL scheme
Fuzzy-match a calendar
By name with a /calendar suffix
Built with MVVM, RxSwift, AppKit and SwiftUI
What you can use Calendr for
- Adding an event without opening Calendar.app and filling in five fields
- Seeing your own time beside a colleague's time zone in the menu bar
Who is Calendr for?
- People who add events often enough that filling in date fields is the slow part
- Users who work across time zones and want them side by side in the menu bar
Who is Calendr not for?
- Readers of non-English or non-Czech instructions — the parser handles only those two languages
Strengths and trade-offs
What Calendr does well, and what to weigh before choosing it. Points marked developer-stated come from the developer’s own material and have not been independently confirmed.
Strengths
- Natural-language event entry: dates, times, durations, all-day flags and the target calendar all come from one line of text.
- Recognised instructions are highlighted as you type, so you see the parse before you commit to it.
- The instructions are removed from the saved event title — the event is stored as "Pickleball with Tom", not the whole line.
- Shows multiple time zones in the menu bar, and can open a date through a calendr://date/… URL scheme.
Trade-offs
- The instruction parser supports English and Czech only; other localisations can opt in to the English parser.
- The URL scheme's relative-date support is limited to today, yesterday and tomorrow, because it rests on NSDataDetector.
- The project asks for optional donations through Buy Me a Coffee, and the README jokes that the screenshot has not been updated in a while.
What it does
Calendr lives in the menu bar and puts your calendar one click away. The feature
that sets it apart is how events get in. You type the event and its instructions
as one line — Pickleball with Tom next Friday from 10 to 12 /sport — and the
app parses it: a two-hour event, next Friday, on the calendar fuzzy-matched by
the /sport suffix. Recognised instructions are highlighted while you type, so
you can see the parse before you commit, and they are stripped out of the saved
title, so the event reads as what it is.
The parser is not a keyword guesser. It understands relative and absolute dates
(tomorrow, in 3 days, next Friday, August 12), times in both 12- and
24-hour form (at 2pm, at 14, from 10 to 12, at 22 until 1), durations
(for 30 minutes, for 4 days), all-day flags, and calendar selection by
fuzzy-matched name. Numeric dates follow the order the active locale uses, and
the first word is always kept as the event title.
Where it fits
Two quieter features round it out. The menu bar can show several time zones at
once from a format string — HH:mm | HH:mm@GMT+2 'LT' | HH:mm@GMT-3 'BR' — which
is what you want if half your colleagues are somewhere else. And a
calendr://date/december URL scheme opens a given date from anywhere, with
relative dates limited to today, yesterday and tomorrow because that support
rests on NSDataDetector.
One limit to know: the instruction parser handles English and Czech. Other localisations can still opt in to the English parser, but the reading you type has to be in one of those two languages.
Questions about Calendr
How do I add an event in Calendr?
Type the title together with its instructions, for example "Pickleball with Tom next Friday from 10 to 12 /sport"; the fields fill in and the instructions are stripped from the title.
Which languages does the event parser understand?
English and Czech. Other localisations can still opt in to the English parser.
Can I see several time zones at once?
Yes, using a format string such as HH:mm | HH:mm@GMT+2 'LT' | HH:mm@GMT-3 'BR'.
Is Calendr free?
Yes. It is free and open source under the MIT licence.
Alternatives to Calendr
Apps that could replace this one — the same job, a different trade-off.
Itsycal
Tiny calendar for your Mac's menu bar.
Both are free, open-source menu-bar calendars for macOS. Itsycal shows the month and your events; Calendr adds plain-English event entry.
Dato
A better menu bar clock with calendar, events, and time zones.
Both keep time and events in the menu bar. Dato is built around multiple time zones and a clock; Calendr is built around entering events.
CalendarX
A lightweight macOS app for displaying calendar and time
Both are free, open-source menu-bar calendar apps. CalendarX focuses on showing dates and holidays; Calendr focuses on entering events in plain English.
Links
Sources
Facts on this page are checked against the sources below. Last updated .
- Calendr — official websiteGrade B
- Calendr — source repositoryGrade D
