Products

calendar.ck71 · Web

Plan together.
Stay in sync.

GDPR team calendar
for teams and families.

calendar.ck71 is a modern team calendar built as a PWA. Real-time collaboration, drag & drop, hybrid auth with token-based viewer links. Backend self-hosted in Germany, no external trackers, local fonts.

In development — drop me a line
Platform Web · PWA
Backend Appwrite self-hosted (DE)
Auth Email + token viewer links
GDPR 100% · own infrastructure
Price Free · Pro · Team · Enterprise
Status In development

01

Real-time collaboration

Everyone sees the same events — at the same time.

Real-time subscriptions on events and sub-calendars. Change an event and everyone else sees it without a reload. Optimistic UI with conflict resolution on the server.

02

Drag & drop

Move events with a single grab.

Move or extend events directly in month, week and day views. Recurring events as RFC-5545 RRULE — grid-aware expansion so edits to one instance don’t break the series.

03

Hybrid auth

Accounts and viewer links side by side.

Email login for members, optionally role-based (admin · editor · viewer). For externals: 20-character token links at /c/[token], optionally password-protected. Permission model directly in Appwrite, sensitive mutations via Nuxt server routes.

04

Fully GDPR

Backend in Germany, no trackers.

Appwrite self-hosted in Nuremberg. Locally hosted fonts (no Google CDN), no external trackers, TLS 1.3, data encrypted at rest. Account deletion and iCal export are built in, not bolted on.