SimpleMobileTools/Simple-Calendar

Health v2 · maintenance only

Adoption not part of the score

3650 stars · 1166 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Simple Calendar is a free, open-source, offline-first calendar app for Android with events, tasks, reminders, customizable colors, and home screen widgets. It supports CalDAV syncing with Google Calendar, Outlook, Nextcloud, and Exchange, plus .ics import/export, with no ads or unnecessary permissions.

Use cases

• plan my day with a simple offline calendar app on android
• schedule recurring events and appointment reminders without ads
• sync my calendar with google calendar or nextcloud via caldav
• add a customizable calendar widget to my android home screen
• export and import calendar events as ics files
• manage birthdays, holidays, and weekly agenda privately offline

When to choose

• you want a privacy-focused, ad-free calendar on Android that works fully offline
• you need CalDAV sync with Google Calendar, Outlook, or Nextcloud
• you want highly customizable themes, colors, and widgets
• you prefer open-source software with no tracking or unnecessary permissions

When to avoid

• you need an iOS, desktop, or web calendar client
• you require deep collaboration features like shared team calendars with real-time editing
• you want built-in email or task-project management beyond simple events and tasks

Facets

application · maturity stable

scheduling gui self-hosted developer-tools mobile-development cross-platform jvm calendar offline-first caldav widgets no-ads privacy open-source android mobile

Member repositories

For agents

markdown · JSON · MCP: product_card(name="SimpleMobileTools/Simple-Calendar")