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Calendars by Readdle alternatives · Calendar

Calendars by Readdle alternatives with a Linux app

The Calendars by Readdle listing does not include a Linux app. 8 of the 75 other calendar and scheduling apps in this directory list a Linux app.

Calendars by Readdle has a free plan. Paid plans start at $19.99 per year, or $3.99 per month (US App Store in-app purchases). 7 of them are free or have a free plan.

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

How each one differs from Calendars by Readdle

  1. Toki

    AI calendar assistant that turns messages into events and to-dos

    • Toki starts at $3.99 per month, or $35.99 per year. Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
    • Only Toki lists a web app.
    • Only Toki lists Windows, Linux and Android apps.
    • Toki also covers booking links and AI agents.
    Toki pricing and details

  2. CalenGoo

    Highly configurable calendar and task app sold as a one-time purchase

    • CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app. Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
    • Calendars by Readdle has a free plan. CalenGoo does not, though it has a free trial.
    • Only CalenGoo lists Android, Windows and Linux apps.
    • CalenGoo can be bought with a one-time purchase.
    CalenGoo pricing and details

  3. Rainlendar

    Skinnable desktop calendar for Windows, Mac and Linux

    • Rainlendar starts at €9.95 one-time for a lifetime Rainlendar Pro license. Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
    • Only Rainlendar lists Windows and Linux apps.
    • Only Calendars by Readdle lists an iOS app.
    • Rainlendar can be bought with a one-time purchase.
    Rainlendar pricing and details

  4. Merkuro Calendar

    Open-source calendar and task app from KDE for Linux

    • Merkuro Calendar is free. Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
    • Only Merkuro Calendar lists a Linux app.
    • Only Calendars by Readdle lists macOS and iOS apps.
    • Merkuro Calendar is open source, according to its own site.
    Merkuro Calendar pricing and details

  5. 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. Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
    • Only Proton Calendar lists a web app.
    • Only Proton Calendar lists Windows, Linux and Android apps.
    • Proton Calendar is open source and end-to-end encrypted, according to its own site.
    Proton Calendar pricing and details

  6. Tuta Calendar

    End-to-end encrypted calendar bundled with Tuta Mail

    • Tuta Calendar starts at €3 per month, paid yearly (€3.60 paid monthly). Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
    • Only Tuta Calendar lists a web app.
    • Only Tuta Calendar lists Windows, Linux and Android apps.
    • Tuta Calendar is open source and end-to-end encrypted, according to its own site.
    Tuta Calendar pricing and details

  7. GNOME Calendar

    Free, open-source calendar app for the GNOME desktop on Linux

    • GNOME Calendar is free. Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
    • Only GNOME Calendar lists a Linux app.
    • Only Calendars by Readdle lists macOS and iOS apps.
    • GNOME Calendar is open source, according to its own site.
    GNOME Calendar pricing and details

  8. Cal.com

    Scheduling platform with a free plan, API and embeds

    • Cal.com starts at $12 per user / month, billed yearly ($16 billed monthly). Calendars by Readdle starts at $19.99 per year, or $3.99 per month (US App Store in-app purchases).
    • Only Cal.com lists a web app.
    • Only Cal.com lists Windows, Linux and Android apps.
    • Only Cal.com lists a browser extension.
    Cal.com pricing and details

Common questions

Which Calendars by Readdle alternatives have a Linux app?

Toki, CalenGoo, Rainlendar, Merkuro Calendar, Proton Calendar, Tuta Calendar, GNOME Calendar and Cal.com list a Linux app.

Does Calendars by Readdle have a Linux app?

The Calendars by Readdle listing does not include a Linux app. It lists macOS and iOS.

Which of these calendar and scheduling apps are free?

Toki, Rainlendar, Merkuro Calendar, Proton Calendar, Tuta Calendar, GNOME Calendar and Cal.com are free or have a free plan.

When was this checked?

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

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Calendars by Readdle: the alternatives its listing names first, then the tools that share the most features with it.