Calendar.online

Spec sheet

Purpose

Calendar.online is presented as a calendar for teams and groups to organize, plan, and share appointments.Read 9 Oct 2026 · calendar.online

Intended users

The maker describes the calendar as suitable for individuals and groups including families and teams, and lists uses such as company, practice, club, school, and duty-roster calendars.Read 9 Oct 2026 · calendar.online

Free plan

YesRead 22 Sep 2026 · calendar.online

Mobile apps

Apps are available for Android, iOS, and macOS, with appointment synchronization between the apps and web version.Read 9 Oct 2026 · calendar.online

Security

The maker says access links use 20-character hexadecimal codes, unauthorized access is recorded, and corresponding IP addresses are blocked.Read 9 Oct 2026 · calendar.online

Headquarters

Düsseldorf, GermanyRead 28 Sep 2026 · calendar.online

Founded

2020Read 28 Sep 2026 · calendar.online

Access and sharing

Users can access calendars through links without logging in, with individually configurable permissions such as read or write.Read 9 Oct 2026 · calendar.online

API and integration

The Premium API can connect Calendar.online to other systems, with Make.com (Integromat) given as an example.Read 9 Oct 2026 · calendar.online

Booking

The booking function lets interested parties and customers book appointments in the calendar, offering only available time slots.Read 9 Oct 2026 · calendar.online

Calendar sync

one_wayRead 22 Sep 2026 · calendar.online

Company history and location

The maker says it founded German-language Kalender.digital in 2019 and Calendar.online in 2020; its contact information lists Düsseldorf, Germany.Read 9 Oct 2026 · calendar.online

Imports and exports

Calendar.online supports event import and export, including iCalendar, and import intervals vary by subscription from daily to every fifteen minutes.Read 9 Oct 2026 · calendar.online

Privacy and compliance

The maker states that Calendar.online is GDPR compliant, its servers are in Germany, IP addresses are stored anonymously, and data is not passed to or sold to third parties.Read 9 Oct 2026 · calendar.online

Reminders

The service offers appointment reminders by email or text message, plus daily or weekly agenda reminders by email.Read 9 Oct 2026 · calendar.online

Scheduling links

YesRead 22 Sep 2026 · calendar.online

Shared calendars

YesRead 22 Sep 2026 · calendar.online

Sub-calendars

Calendars can be organized into colored sub-calendars, with readable and writable sub-calendars configured for each access link.Read 9 Oct 2026 · calendar.online

Support contact

The maker lists [email protected] as its contact email.Read 9 Oct 2026 · calendar.online

Website integration

The Basic plan includes integration into a user's own website.Read 9 Oct 2026 · calendar.online

Plans and prices

Every Calendar.online plan and price →

Where Specifiction places it

• Calendar apps#24 of 1948.8