Skip to content
ToolGPA

OnceHub alternatives · Calendar

OnceHub alternatives with a Windows app

The OnceHub listing does not include a Windows app. 15 of the 89 other calendar and scheduling apps in this directory list a Windows app.

OnceHub has a free plan. Paid plans start at $10 per seat / month, billed annually ($12 billed monthly). 13 of them are free or have a free plan.

15 tools · Listings checked up to Nov 12, 2026 · Where the facts come from

The 12 closest to OnceHub

  1. Cal.com

    Scheduling platform with a free plan, API and embeds

    • Cal.com starts at $12 per user / month, billed yearly ($16 billed monthly). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Cal.com lists macOS, Windows, Linux, iOS and Android apps.
    • Cal.com is self-hostable, according to its own site.
    • Cal.com also covers workflow automation.
    Cal.com vs OnceHubCal.com pricing and details

  2. Setmore

    Appointment booking app with a free plan for up to four staff

    • Setmore starts at $5 per user / month, billed annually ($12 billed monthly). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Setmore lists macOS, Windows, iOS and Android apps.
    • Only OnceHub lists a browser extension.
    Setmore pricing and details

  3. Vimcal

    Fast calendar for people with heavy meeting schedules

    • Vimcal starts at $25 per month, billed yearly ($300 per year); $35 billed monthly. OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Vimcal lists macOS, Windows and iOS apps.
    • Only OnceHub lists a browser extension.
    • Vimcal also covers calendar and Pomodoro timer.
    Vimcal pricing and details

  4. Zoom Scheduler

    Booking pages and meeting polls built into Zoom Workplace

    • Zoom Scheduler starts at $4.99 per user / month, billed annually ($5.99 billed monthly). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Zoom Scheduler lists macOS, Windows, iOS and Android apps.
    • Only OnceHub lists a browser extension.
    • Zoom Scheduler also covers workflow automation.
    Zoom Scheduler pricing and details

  5. Toki

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

    • Toki starts at $9.99 per month (Super). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Toki lists macOS, Windows, Linux, iOS and Android apps.
    • Only OnceHub lists a browser extension.
    • Toki also covers tasks, natural-language input, calendar and AI agents.
    Toki pricing and details

  6. Fantastical

    Calendar and tasks app for Apple devices, Windows and Googlebook

    • Fantastical starts at $4.75 per month, billed annually ($6.99 billed monthly). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Fantastical lists macOS, Windows and iOS apps.
    • Only OnceHub lists a web app.
    • Only OnceHub lists a browser extension.
    Fantastical pricing and details

  7. Notion Calendar

    Free calendar app that connects to Notion databases

    • Notion Calendar is free. OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Notion Calendar lists macOS, Windows, iOS and Android apps.
    • Only OnceHub lists a browser extension.
    • Notion Calendar also covers calendar.
    Notion Calendar pricing and details

  8. 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. OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Proton Calendar lists macOS, Windows, Linux, iOS and Android apps.
    • Only OnceHub lists a browser extension.
    • Proton Calendar is open source and end-to-end encrypted, according to its own site.
    Proton Calendar pricing and details

  9. nocal

    Calendar, notes and tasks in one app, with an MCP server for AI

    • nocal starts at $4.99 per month (Everywhere). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only nocal lists macOS, Windows, iOS and Android apps.
    • Only OnceHub lists a web app.
    • Only OnceHub lists a browser extension.
    nocal pricing and details

  10. fruux

    CalDAV and CardDAV sync for contacts, calendars and tasks

    • fruux starts at €4 per month or €40 per year (Pro). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only fruux lists macOS, Windows, Linux, iOS and Android apps.
    • Only OnceHub lists a browser extension.
    • fruux also covers tasks and calendar.
    fruux pricing and details

  11. Tuta Calendar

    End-to-end encrypted calendar bundled with Tuta Mail

    • Tuta Calendar starts at €3 per month, paid yearly (€3.60 paid monthly). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only Tuta Calendar lists macOS, Windows, Linux, iOS and Android apps.
    • Only OnceHub lists a browser extension.
    • Tuta Calendar is open source and end-to-end encrypted, according to its own site.
    Tuta Calendar pricing and details

  12. One Calendar

    One view of all your calendars on Android, Apple and Windows

    • One Calendar starts at $5.99 one-time per platform (App Store or Google Play). OnceHub starts at $10 per seat / month, billed annually ($12 billed monthly).
    • Only One Calendar lists Android, iOS, macOS and Windows apps.
    • Only OnceHub lists a web app.
    • Only OnceHub lists a browser extension.
    One Calendar pricing and details

3 more that list a Windows app

All 15 in one table

Common questions

Which OnceHub alternatives have a Windows app?

Cal.com, Setmore, Vimcal, Zoom Scheduler, Toki, Fantastical, Notion Calendar, Proton Calendar and 7 more list a Windows app.

Does OnceHub have a Windows app?

The OnceHub listing does not include a Windows app. It lists Web and Browser extension.

Which of these calendar and scheduling apps are free?

Cal.com, Setmore, Vimcal, Zoom Scheduler, Toki, Fantastical, Notion Calendar, Proton Calendar and 5 more 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 Nov 12, 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 OnceHub: the alternatives its listing names first, then the tools that share the most features with it.