Etar vs Simple Calendar Pro (2026): which should you pick?
As of Nov 13, 2026, Etar 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
Etar grades higher on the free plan. Simple Calendar Pro grades higher on ease of use. They get the same grade on value for money, features and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Simple Calendar Pro
Offline Android calendar with CalDAV sync and no ads, bought once
From $2.99 one-time
Which one is for you
Pick Etar if
- Fits if you're on Android and want a plain calendar whose code anyone can read
- Works for people who sync their own CalDAV server through DAVx5 and need something to show it
Look elsewhere if
- Skip it if you want sync built in, because Etar has no CalDAV client and relies on other apps
- Not for you if you get lots of emailed invitations, as the project calls its ICS import unstable
- Watch out: the Google Play link in its README returned Not Found, so the current version comes from F-Droid
- Too light for anyone wanting tasks, templates or widgets beyond one agenda list
- Skip it if you also use an iPhone or a computer: it's Android only, version 6.0 or newer
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
| 2.6GPAEtarGood | 2.0GPASimple Calendar ProFair | |
|---|---|---|
| Value for money | AFree, and there's no paid version above it to be steered towards. The whole app is open source under the GPLv3 while most of this category wants $6 a month. | A$2.99 one-time, well under a year of the $8 middle calendar subscription. |
| Free plan and trial | AAll of it is free, with no tier, no ads and no account. Install from F-Droid or build it yourself from the source on GitHub. Nothing to run into. | FNo free version of this app and no trial; the vendor's free app is a separate listing with ads. |
| Features | CThe basics, done plainly: month, week, day and agenda views, an offline calendar, ICS sharing and an agenda widget. The gaps are in the project's own notes, though. No CalDAV client, so server sync is another app's job, and it warns that ICS import has known bugs. | 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 | CNo rating on record, and there's wiring to do. It comes from F-Droid, since the Google Play link in the README returned Not Found when we checked, and syncing with a server means setting up DAVx5 as well. | BNo rating counted, but it is install and start with nothing to set up. |
| Platforms and integrations | DOne operating system: Android, version 1.0.57 needing Android 6.0 or newer. It'll show any calendar another app syncs to the phone, Google included, but there's no iPhone, desktop or web version. | DAndroid only, with CalDAV, Google, Outlook, Nextcloud and Exchange sync. |
| Best for | a plain open-source calendar on Android | 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: Etar and Simple Calendar Pro. How we grade
Where they differ
- Simple Calendar Pro can be bought with a one-time purchase.
In commonAndroidOpen sourceWorks offlineCalendar
At a glance
| Etar | Simple Calendar Pro | |
|---|---|---|
| Pricing | Free | Paid |
| Starts at | Free | $2.99 one-time |
| Free plan | Free and open source under the GPLv3. The app is installed from F-Droid or built from the source on GitHub, and the project lists no paid version. | None |
| Free trial | None listed | None listed |
| Android | ||
| Made by | The Etar Project | Simple Mobile Tool |
| Price read from | github.com | play.google.com |
| Checked | Oct 9, 2026 | Nov 13, 2026 |
Worth knowing
Etar
- Android only; the F-Droid build of version 1.0.57 requires Android 6.0 or newer.
- No CalDAV client is included. Syncing a calendar with a server needs another app, such as DAVx5.
- The project describes its ICS import as unstable and advises caution if your provider sends invitation emails automatically.
- The Google Play link in the project's README returned a Not Found page on the check date; F-Droid carries the current version.
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
Etar
- Month, week, day and agenda views
- Four views in a Material Design interface with dark and light themes. Recent versions let the week start on any day and can stagger overlapping events.
- Works with any Android calendar provider
- Etar reads Android's calendar storage, so it shows every calendar synced to the phone. You choose which ones are displayed and which one new events go to.
- Offline calendars
- A calendar can be created that is stored on the phone only and never synced to a server.
- ICS sharing, import and export
- Calendars can be shared as ICS files and imported or exported from storage, including invitations received by email. The project warns that import has known bugs.
- Agenda widget
- A home screen widget lists upcoming events in agenda form. The interface is translated into many languages by volunteers.
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
Etar
Etar$0
The complete app, built and signed by F-Droid from the public source code. Version 1.0.57 requires Android 6.0 or newer.
Simple Calendar Pro
Simple Calendar Pro$2.99
one-time
Paid app on Google Play (US price); the listing says it has no ads.
Common questions
Which is cheaper, Etar or Simple Calendar Pro?
As of Nov 13, 2026, Etar is free, and Simple Calendar Pro starts at $2.99 one-time.
Which has a free plan, Etar or Simple Calendar Pro?
As of Nov 13, 2026, only Etar 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.