# airbnb/HorizonCalendar

A declarative, performant, iOS calendar UI component that supports use cases ranging from simple date pickers all the way up to fully-featured calendar apps.

Repository: https://github.com/airbnb/HorizonCalendar
Canonical: https://ross.abutalabs.com/products/horizoncalendar
Language: Swift
License: Apache-2.0
License Family: permissive
Last push: 2026-08-12T21:29:21+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 35, longevity 100
- inputs: {"age_days": 2269, "days_push": 21, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3155, forks 263 (observed 2026-08-28T04:07:46.317180+00:00)

## What it is
A declarative, performant calendar UI component library for iOS, supporting both SwiftUI and UIKit. It scales from simple date pickers to fully-featured calendar apps and powers Airbnb's iOS calendars.

## Use cases
- build a date picker in an iOS app
- display a scrollable month calendar in SwiftUI
- implement a date range selection calendar
- create a custom-styled calendar UI in UIKit
- show large or infinite date ranges in a calendar view
- build a booking availability calendar

## When to choose
- you need a highly customizable iOS calendar with SwiftUI or UIKit support
- you need performant rendering of very large date ranges
- you need accessibility support and multiple calendar systems

## When to avoid
- you need a calendar for Android or cross-platform apps
- you just need a simple native date picker without customization

## Facets
- artifact type: library
- maturity: active
- function: ui-components, mobile-framework
- domain: mobile-development, frontend
- platform: -
- tags: calendar, date-picker, swiftui, uikit, declarative-ui, ios, swift, mobile

## Member repositories
- airbnb/HorizonCalendar (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:46.317180+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:25:38.981536+00:00, confidence not recorded.
  - readme: https://github.com/airbnb/HorizonCalendar (fetched 2026-08-28T04:07:46.317180+00:00, sha 2c4a121d7b9f)
- Data as of 2026-08-30T08:39:29.467469+00:00.