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Alternatives · Calendar

Etar alternatives

Etar compared with 5 alternatives: Fossify Calendar, Google Calendar, aCalendar, Proton Calendar and Tuta Calendar.

Etar is free to use. All 5 alternatives are free or have a free plan.

5 tools · Listings checked up to Oct 9, 2026 · Where the facts come from

At a glance

ToolPriceFree planRuns on
EtarThis toolFreeFreeAndroid
Fossify CalendarFreeFreeAndroid
Google CalendarFree plan · from $7/moYesWeb, iOS, Android
aCalendarFree plan · from $2.49 one-timeYesAndroid
Proton CalendarFree plan · from $3.99/moYesWeb, macOS, Windows, Linux, iOS, Android
Tuta CalendarFree plan · from €3/moYesWeb, macOS, Windows, Linux, iOS, Android

How each one differs from Etar

  1. Fossify Calendar

    Open-source Android calendar with no ads, tracking or account

    • Fossify Calendar is free. Etar is free.

    Suits: Android users who want a calendar without ads, tracking or sign-up

    Fossify Calendar vs EtarFossify Calendar pricing and details

  2. Google Calendar

    Online calendar from Google, free with a personal account

    • Google Calendar starts at $7 per user / month with a 1-year commitment (Workspace Business Starter). Etar is free.
    • Only Google Calendar lists a web app.
    • Only Google Calendar lists an iOS app.
    • Etar is open source, according to its own site.
    • Google Calendar also covers tasks and booking links.

    Suits: Anyone who already has a Google Account and wants a free calendar

    Google Calendar vs EtarGoogle Calendar pricing and details

  3. aCalendar

    Android calendar with widgets, tasks and one-time upgrades

    • aCalendar starts at $2.49 to $11.99 per one-time in-app upgrade; aCalendar+ is $11.99. Etar is free.
    • aCalendar can be bought with a one-time purchase.
    • Etar is open source, according to its own site.
    • aCalendar also covers tasks.

    Suits: Android users who want a full calendar without a subscription

    aCalendar vs EtaraCalendar pricing and details

  4. Proton Calendar

    End-to-end encrypted calendar from the maker of Proton Mail

    • Proton Calendar starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly. Etar is free.
    • Only Proton Calendar lists a web app.
    • Only Proton Calendar lists macOS, Windows, Linux and iOS apps.
    • Proton Calendar is end-to-end encrypted, according to its own site.
    • Proton Calendar also covers booking links.

    Suits: People who want event details kept unreadable to the provider

    Proton Calendar vs EtarProton Calendar pricing and details

  5. Tuta Calendar

    End-to-end encrypted calendar bundled with Tuta Mail

    • Tuta Calendar starts at €3 per month, paid yearly (€3.60 paid monthly). Etar is free.
    • Only Tuta Calendar lists a web app.
    • Only Tuta Calendar lists macOS, Windows, Linux and iOS apps.
    • Tuta Calendar is end-to-end encrypted, according to its own site.

    Suits: People who want a calendar their provider cannot read

    Tuta Calendar vs EtarTuta Calendar pricing and details

Limits worth knowing in 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.
Etar pricing and details

Common questions

What are the alternatives to Etar?

The alternatives to Etar in this directory are Fossify Calendar, Google Calendar, aCalendar, Proton Calendar and Tuta Calendar. Each one has a side-by-side comparison with Etar.

Is there a free alternative to Etar?

Yes. Fossify Calendar is free to use. Google Calendar, aCalendar, Proton Calendar and Tuta Calendar have a free plan alongside paid ones.

Which Etar alternatives work on Windows?

The Etar listing does not include a Windows app. Proton Calendar and Tuta Calendar list one.

Which Etar alternatives work on macOS?

The Etar listing does not include a macOS app. Proton Calendar and Tuta Calendar list one.

When were these prices checked?

Each listing shows its own date. On this page they run from Oct 4, 2026 to Oct 9, 2026. Vendors change prices without notice, so confirm on their site before you buy.

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