Google Calendar is the default for most people. It's also barebones for anyone who treats their calendar as a tool, not just a list. Below are five better options for specific use cases.
1. Cron (now Notion Calendar) — best UX
Notion Calendar (free) connects to Google Calendar and adds a vastly better interface — keyboard navigation, multi-calendar views, drag-to-create. The single biggest UX upgrade you can make today.
2. Fantastical (Mac/iOS) — best for natural language
Type "Lunch with Aslam Friday 1pm at Cafe Cino" and Fantastical parses everything. Beautiful weather integration, complication-rich. $5/month.
3. Sunsama — best for daily planning
Combines calendar + tasks + email triage into one daily-planning ritual. Forces you to time-block your day. Pricey at $20/month but transformative for serious knowledge workers.
4. Cal.com — best for accepting bookings
Open-source Calendly alternative. Free for personal use. Share a link, people book themselves into your available slots, no double-bookings.
5. Reclaim AI — best for protecting focus time
Connect Reclaim to Google Calendar. It auto-schedules your habits ("write for 90 minutes daily") into available slots, defending them against meeting invites. Free tier covers basic use.
For most people
Keep Google Calendar as the source of truth (cheap, reliable, integrates everywhere). Layer Notion Calendar on top of it for a better interface. That combination beats every standalone calendar app at no cost.