# aCalendar

> Android calendar with widgets, tasks and one-time upgrades

aCalendar is a calendar app for Android from Tapir Apps, an independent studio in Munich. It uses Android's own calendar storage and sync, so it shows Google, Exchange and CalDAV calendars already set up on the phone, with day, week, month, agenda and year views and eight widgets. The free version carries ads, and tasks, business features, public holidays and extra colors are sold as one-time upgrades or all together in the separate aCalendar+ app.

- **Category:** Calendar & Scheduling
- **Made by:** Tapir Apps GmbH (since 2011)
- **Website:** https://www.tapirapps.de/en/
- **Runs on:** Android
- **Facts last checked:** Oct 9, 2026

## Pricing

aCalendar has a free plan. Paid plans start at $2.49 to $11.99 per one-time in-app upgrade; aCalendar+ is $11.99.

- **Pricing model:** Free plan
- **Free plan:** Free version with ads: day, week, month, agenda and year views, 8 widgets, multi-select, printing and ICS or CSV export. Tasks, business features, public holidays and extra colors are paid upgrades.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| aCalendar | $0 | All calendar views, 8 widgets, flexible recurrences, birthdays, moon phases, printing and export. Shows ads, at most one a day according to the vendor. |
| In-app upgrades | $2.49 - $11.99 one-time payment per item on Google Play | Ad-free, Tasks, Business Features, Colors and Holidays bought individually inside the free app. Not shareable through Family Library. |
| aCalendar+ | $11.99 one-time purchase on Google Play | A separate paid app with every upgrade included and no ads. It can be shared through Google Play Family Library. |

Read from https://play.google.com/store/apps/details?id=org.withouthat.acalendar&hl=en_US&gl=US on Oct 9, 2026. Prices change, so confirm with aCalendar before buying.

## Ways to pay less

- **Family Library sharing for aCalendar+** (Other savings): Bought as a paid app after July 2, 2016, aCalendar+ can be shared with up to 5 family members through Google Play Family Library. In-app upgrades are not eligible. Source: https://acalendar.tapirapps.de/en/support/solutions/articles/36000058846-google-play

## Key features

- **Day, week, month, agenda and year views:** Swipe vertically to move through time and horizontally to switch views. Day and week views can show a mini month or a graphical week overview alongside.
- **Eight home screen widgets:** Widgets include agenda, date, day and week layouts and a birthday widget added in version 2.9. Accent colors can be set per widget with the Colors upgrade.
- **Tasks next to events:** The Tasks upgrade shows to-dos on their due dates in day, week and month views, with subtasks and a tasks widget. It works with Google Tasks, Microsoft To Do, CalDAV through Tasks.org, and local lists.
- **Business features:** An upgrade adds attendee management, linking contacts to events, free or busy status, private events, and profiles that separate work and personal calendars.
- **Print and export:** Calendar views can be printed or exported as PDF or PNG, and events exported as ICS or CSV files. Multi-select applies an action to several events at once.
- **Uses Android's calendar sync:** The app runs no servers of its own. It reads and writes the calendars Android syncs, including Google Calendar, Microsoft Exchange accounts and CalDAV servers, plus local calendars.

## Good for

- Android users who want a full calendar without a subscription
- People who want Google Tasks or Microsoft To Do lists inside their calendar
- Anyone who prefers to buy only the upgrades they need

## Worth knowing

- Android only. The vendor states there is no iOS, web or PC version and that none is planned.
- The free version shows ads, and tasks, attendees, profiles, public holidays and the wider color choices all need a paid upgrade.
- In-app upgrades cannot be shared through Google Play Family Library; only the separate aCalendar+ app can.
- Licenses are tied to the store account and cannot be moved between Google Play and Huawei AppGallery.

## Works with

Google Calendar, Google Tasks, Microsoft To Do, Microsoft Exchange, Tasks.org, DAVx5, Nextcloud, Synology

**Tags:** Calendar, Tasks, One-time purchase

## Alternatives

- [Business Calendar 2](https://toolgpa.com/tools/business-calendar-2): Android calendar and task app with widgets and a Pro upgrade. [Compare](https://toolgpa.com/compare/acalendar-vs-business-calendar-2)
- [DigiCal](https://toolgpa.com/tools/digical): Android calendar with seven views, widgets and weather forecasts. [Compare](https://toolgpa.com/compare/acalendar-vs-digical)
- [CalenGoo](https://toolgpa.com/tools/calengoo): Highly configurable calendar and task app sold as a one-time purchase. [Compare](https://toolgpa.com/compare/acalendar-vs-calengoo)
- [One Calendar](https://toolgpa.com/tools/one-calendar): One view of all your calendars on Android, Apple and Windows. [Compare](https://toolgpa.com/compare/acalendar-vs-one-calendar)
- [Google Calendar](https://toolgpa.com/tools/google-calendar): Online calendar from Google, free with a personal account. [Compare](https://toolgpa.com/compare/acalendar-vs-google-calendar)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 9, 2026:

- https://www.tapirapps.de/en/
- https://acalendar.tapirapps.de/en/support/home
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000126848-about-upgrades
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000058825-ad-free
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000058826-tasks-feature
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000009809-business-features
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000058828-colors
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000058846-google-play
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000171906-system-requirements
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000113436-web-pc-windows-version
- https://acalendar.tapirapps.de/en/support/solutions/articles/36000061885-company-info
- https://play.google.com/store/apps/details?id=org.withouthat.acalendar&hl=en_US&gl=US
- https://play.google.com/store/apps/details?id=org.withouthat.acalendarplus&hl=en_US&gl=US

Page: https://toolgpa.com/tools/acalendar
Listed by ToolGPA (toolgpa.com).