Best Calendar software

End-to-end encryption covers event contents on every plan, including the free tier — not a paid-only feature

Swiss incorporation places data under strict Swiss privacy laws and a neutral jurisdiction, a genuine structural difference from US-based Big Tech calendars

Calendar sharing requires a paid plan (Mail Plus or Proton Unlimited) — it is not available on the free tier

The free plan caps you at 1 GB of overall Proton storage and a single encrypted email address, which limits how far you can adopt the ecosystem without paying

Billing follows activity: you're charged only for users marked active the previous month, so seasonal or dormant staff cost nothing in months they don't use the system.

Every feature ships on the standard Monthly Plan — scheduling, HR, leave, documents, time clock, multi-venue, messaging, and reports — with no tiered feature gates to pay through.

No fixed prices are published anywhere — you must drag the slider on the pricing page to see your actual monthly cost, which makes quick budget comparisons impossible.

Live support runs 08:00 to 20:00, so late-night or early-morning shift emergencies fall outside published help hours.

One shared calendar shows every family member's schedule in a single color-coded view, so you can see who's involved in each activity without opening separate profiles

Automatic notifications and agenda emails push schedule updates to family members on their own, eliminating the need to repeat changes by text or verbally

Cozi doesn't document syncing with outside calendar tools like Google Calendar or Outlook, so households already committed to those platforms should verify compatibility before switching

The free tier is ad-supported, and the features that make the app more pleasant to use daily — month view on mobile, search, extra reminders, no ads — are locked behind the Gold subscription

Completely free for personal use, with no paywall on core scheduling features like sharing, reminders, and recurring events

Automatic event creation from Gmail confirmations—flights, hotels, and reservations arrive as ready-made calendar entries

No native Windows or macOS desktop app—desktop users are limited to the browser or third-party clients

Task and reminder features are basic compared with dedicated to-do or project management tools