aCalendar review

aCalendar has been on Android for more than a decade and keeps its model simple: a free app with occasional ads, and aCalendar+ as a one-time purchase that the US Google Play store listed at $11.99. Because it uses Android's native calendar backend and synchronization, any Google or Exchange account set up on the phone appears automatically, and it can manage Google calendars directly. Navigation is gesture based: swipe vertically to move through time, horizontally to switch between day, week and month, and long-press to add an event. There are 8 widgets, a year view, moon phases, birthdays from contacts, printing and ICS or CSV export. The paid extras include public and school holidays, more colors, tasks from Google Tasks or CalDAV, and business features such as inviting attendees and free/busy. The gesture model is quick once learned but less obvious than Google Calendar at first, and work features sit behind the upgrade.

Who it is for

People who prefer a one-time purchase over a subscription.

Price

Free with ads; aCalendar+ is a one-time $11.99 on the US Google Play store.

$11.99 Buy
Quoted from the vendor pricing page on November 10, 2026.

Key features

• Day, week, month, agenda and year views
• 8 widgets, including a birthday widget
• Uses Android's native calendar backend and sync
• Export as ICS or CSV, plus printing
• Tasks from Google Tasks or CalDAV in the paid version

Strengths and weaknesses

• Strength: One-time upgrade instead of a subscription
• Strength: Works with any account the phone already syncs, including Google and Exchange
• Strength: Translated into more than 30 languages
• Weakness: The free version shows occasional ads
• Weakness: Inviting attendees and free/busy are paid business features
• Weakness: Swipe-based navigation takes some learning

Key facts

• Free version: Yes, with ads
• aCalendar+: $11.99 one-time on US Google Play
• Widgets: 8
• Languages: 30+

Where it ranks

aCalendar is No. 4 in our Best Calendar Apps for Android verdict.