aCalendar vs Simple Calendar Pro (2026): which should you pick?
As of Nov 13, 2026, aCalendar grades higher than Simple Calendar Pro: 2.6 against 2.0 out of 4.0.
Checked Oct 9, 2026 and Nov 13, 2026 · graded Oct 10, 2026 and Nov 13, 2026 by ToolGPA
aCalendar grades higher on the free plan. They get the same grade on value for money, features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
aCalendar
Android calendar with widgets, tasks and one-time upgrades
Simple Calendar Pro
Offline Android calendar with CalDAV sync and no ads, bought once
Which one is for you
Pick aCalendar if
- Fits if you're on Android only and would rather pay once than every month
- Works for people who keep to-dos in Google Tasks or Microsoft To Do, once they buy the Tasks upgrade
Look elsewhere if
- Skip it if you also use an iPhone or a computer: it's Android only, and the maker says no other version is planned
- Tight if you're staying free: it shows ads, and tasks, public holidays and extra colors are paid upgrades
- Watch out: attendees, free or busy status and work profiles sit in the paid Business Features upgrade
- Not for you if you share purchases with family, as only the separate $11.99 aCalendar+ app works with Family Library
- Watch out: licenses are tied to your store account and can't move between Google Play and Huawei AppGallery
Pick Simple Calendar Pro if
- Fits if you want a plain offline calendar on an Android phone
- Works for people who want no ads and a one-time price
Look elsewhere if
- Skip it if you use an iPhone, Mac or the web, as it is Android only
- Watch out: the Pro listing was last updated on 3 October 2023
- Not for you if you want booking links or team scheduling
- Watch out: the vendor's site now points to a free version with ads and in-app purchases
How we grade them
| 2.6GPAaCalendarGood | 2.0GPASimple Calendar ProFair | |
|---|---|---|
| Value for money | AOne-time payments, from $2.49 for a single upgrade to $11.99 for aCalendar+ with every upgrade in it. The middle of this category charges $6 a month, so the full set costs about two months of that, once. | A$2.99 one-time, well under a year of the $8 middle calendar subscription. |
| Free plan and trial | BThe free app has all five views, 8 widgets, multi-select, printing and ICS or CSV export, with ads, at most one a day by the maker's count. Tasks, public holidays, business features and the wider colors are paid. | FNo free version of this app and no trial; the vendor's free app is a separate listing with ads. |
| Features | CFive views, eight widgets, recurrences, birthdays, printing to PDF and export to ICS or CSV, with tasks and attendee management as paid upgrades. It's a front end on Android's own sync, a smaller job than this category's, and runs no servers of its own. | COffline calendar with views, events, reminders and import and export. It does that fully and it is a smaller job: no booking or team features. |
| Ease of use | BNo rating on record. There's nothing to set up: it reads the Google, Exchange and CalDAV calendars Android already syncs, so there's no new account and no import. Swipe up and down for time, sideways for views. | BNo rating counted, but it is install and start with nothing to set up. |
| Platforms and integrations | DOne operating system. Android, and the maker says plainly there's no iOS, web or PC version and none is planned, so your laptop and anyone's iPhone are out. It does read Google, Exchange and CalDAV accounts through Android's sync. | DAndroid only, with CalDAV, Google, Outlook, Nextcloud and Exchange sync. |
| Best for | an Android calendar you pay for once | an offline calendar on Android |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: aCalendar and Simple Calendar Pro. How we grade
Where they differ
- Simple Calendar Pro is open source, according to its own site.
- aCalendar also covers tasks.
At a glance
| aCalendar | Simple Calendar Pro | |
|---|---|---|
| Pricing | Free plan | Paid |
| Starts at | $2.49 to $11.99 per one-time in-app upgrade; aCalendar+ is $11.99 | $2.99 one-time |
| 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. | None |
| Free trial | None listed | None listed |
| Android | ||
| Made by | Tapir Apps GmbH | Simple Mobile Tool |
| Price read from | play.google.com | play.google.com |
| Checked | Oct 9, 2026 | Nov 13, 2026 |
Worth knowing
aCalendar
- 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.
Simple Calendar Pro
- Android only; the pages read list no iPhone, Mac or web version.
- The Pro listing was last updated on October 3, 2023, and the vendor's site now describes a free Simple Calendar app that contains ads and in-app purchases.
- It is a personal calendar; the pages read mention no booking links or team scheduling.
Key features
aCalendar
- 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.
Simple Calendar Pro
- Offline use
- The listing says no internet access is needed, so events stay on the device.
- CalDAV and Google Calendar sync
- Events can sync with Google Calendar, Outlook, Nextcloud, Exchange and other CalDAV services.
- Several views
- Switch between daily, weekly, monthly, yearly and list views, with a home-screen widget.
- Events and reminders
- Set times, durations, reminders and repetition rules, and import holidays and contact birthdays.
- Import and export
- Events move in and out through .ics files, and settings can be exported to a text file.
Plans
aCalendar
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.
Simple Calendar Pro
Simple Calendar Pro$2.99
one-time
Paid app on Google Play (US price); the listing says it has no ads.
Ways to pay less
aCalendar
- Other savings
Family Library sharing for aCalendar+
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.
Simple Calendar Pro
No public discounts listed.
Common questions
Which is cheaper, aCalendar or Simple Calendar Pro?
As of Nov 13, 2026, aCalendar starts at $2.49 to $11.99 per one-time in-app upgrade; aCalendar+ is $11.99, and Simple Calendar Pro starts at $2.99 one-time.
Which has a free plan, aCalendar or Simple Calendar Pro?
As of Nov 13, 2026, only aCalendar has a free plan. Simple Calendar Pro does not.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.