BusyCal

BusyCal provides a calendar solution for macOS, iPhone, and iPad that integrates iCloud, Google, Exchange, and CalDAV sources. It supports natural‑language entry for events, offers smart filters, and includes task management alongside standard calendar features. Users can view their schedule in day, week, month, year planner, or list formats, and customize appearance such as fonts, colors, and panel visibility.

The app emphasizes flexibility through Calendar Sets, allowing users to group and toggle between different calendar collections with a single click, which helps separate work, personal, or family schedules. Smart Filters enable custom views that combine events from multiple calendars, and the interface includes a menu‑bar calendar for quick access.

Additional utilities include countdowns and count‑ups for events, travel‑time calculations, map integration, sticky notes, weather and moon‑phase display, and customizable holiday information. These features target professionals, students, and scholars who need a highly configurable and reliable calendar platform on Apple devices.