10 Best Free Calendar Apps of 2026

Google Calendar is the safest free pick because it does the everyday jobs well on every device. Events can be added from Gmail automatically, so flights, hotels and restaurant bookings show up without typing. Shared calendars let family, friends or colleagues view, add or change events, and tasks sit next to meetings so a separate to-do app is optional. On the iPhone app you can view Exchange and iCloud calendars next to your Google events. A personal account can also create an appointment schedule with a booking page, buffer time between appointments and a cap on bookings per day, which covers light client scheduling. The limits are real but narrow. Appointment schedules can only be set up from a computer, and Google keeps some booking features, such as several booking pages and payment collection, for Workspace or Google One subscribers. Gemini scheduling inside Gmail is also premium. For someone who wants one free calendar that works with almost everything, it is the default.

Apple Calendar is the easiest free calendar if every screen you use is made by Apple. It is already on iPhone, iPad and Mac, and it pulls iCloud, Exchange and Google accounts into one schedule, so you can keep a work calendar and a personal one without switching apps. Reminders appear and can be completed next to meetings, and holidays, birthdays and subscribed calendars sit in the same view. Events can hold a location alert that tells you when to leave, a video call link, attachments and notes. Shared iCloud calendars let family members see events, add more and receive alerts. The weak spots come from the platform. There is no Android or Windows app, so a mixed household will find Google Calendar more practical, and editing a shared calendar works best when everyone has an Apple Account. There is also no booking page for clients. For an Apple-only setup, it costs nothing and needs no setup.

Outlook is the right free calendar for anyone whose email already lives with Microsoft. The free account gives you Outlook email and calendar on the web, desktop and mobile apps, 15 GB of mailbox storage and 5 GB of cloud storage, plus the web and mobile versions of Word, Excel and PowerPoint. The mobile app can share your meeting availability with a tap and connects Exchange, Outlook.com, Gmail, Yahoo and iCloud accounts, so it also works as a single place for several calendars. The paid tier is cheap: Microsoft 365 Basic costs $19.99 per year and makes Outlook ad-free. Copilot features such as email summaries need Microsoft 365 Personal, Family or an eligible business plan. The trade-off is that Outlook is an email app with a calendar inside, so people who only want a calendar may find Google Calendar or Apple Calendar lighter. For Microsoft account holders, it is the most complete free option.

Notion Calendar is a free app that makes a Google calendar faster to use and ties it to Notion. It shows your schedule at a glance, lets you join meetings from the menu bar and supports Zoom and Google Meet, with Apple Calendar meetings also creatable from Notion. Built-in scheduling links let others book time with you without a separate booking tool, and the app can auto-block busy slots across all your calendars to stop double bookings between work and personal accounts. For Notion users, deadlines and project timelines appear beside events, and dragging a database item on the calendar updates it. It runs on macOS, Windows, iOS and Android, and the interface is available in 12 languages. The catch is that it is a front end built around connecting Google Calendar, and much of the extra value disappears if you do not use Notion. As a free upgrade to Google Calendar on a computer, it is hard to beat.

Zoho Calendar is the most business-ready free calendar here. Zoho describes it as a free online calendar for individuals and teams, and it includes appointment booking, conferencing, team calendars and resource booking for rooms or equipment, which are often paid features elsewhere. Smart Add turns a typed phrase such as a meeting tomorrow at 2pm into an event, drag and drop moves appointments, and you can show two time zones on the grid at once. Day, week, month and agenda views are available, along with themes and a dark mode. It syncs with Google, Outlook, Calendly, Thunderbird and Apple calendars and has apps for Windows, Mac, Android and iOS. Zoho Mail, Workplace and Zoho One customers get it as part of their account. The drawbacks are focus and fit: the product is built for teams, and households may find TimeTree or Google Calendar simpler. For a small office that wants shared calendars and room booking at no cost, it is a strong pick.

Fantastical has the most polished event entry of any app here. You type a sentence such as lunch with a friend on Tuesday and it becomes an event, and starting with todo or remind me to creates a task. The free version covers basic events with the DayTicker, full screen day, week, month, quarter and year views, task support for iCloud Reminders, Todoist and Google Tasks, and a 3 day weather forecast. It works with your existing iCloud, Google and Exchange accounts and runs on Mac, iPhone, iPad, Apple Watch, Apple Vision Pro, Windows and Googlebook. The catch for this list is how much sits behind Flexibits Premium: Openings for availability scheduling, meeting polls, Zoom and Teams call links, calendar sets, templates and the 10 day forecast. Premium costs $56.99 per year or $6.99 per month on the US App Store, with a 14 day trial. As a free app it is pleasant but limited; it shines once you pay.

Proton Calendar is the pick for people who do not want their calendar provider to read their schedule. Proton encrypts event details, including the title, description, location and invited people, so that Proton itself cannot see them, and events received from people on other calendars are protected with zero-access encryption. The company is based in Switzerland and says the service carries no ads or trackers. Day to day, the app offers agenda and day views, several reminders per event, recurring events on daily to custom schedules and sync across devices, and invitations from Proton Mail land on the calendar automatically. A scheduling feature updates your availability and adds confirmed meetings. The free plan includes 3 personal calendars, while paid Proton plans raise that to 25. It has fewer integrations than the big providers, and it is most useful alongside a Proton Mail address. If privacy is the deciding factor, it is the strongest free option here.

TimeTree is designed for the job most calendars treat as an extra: planning with other people. You create a calendar for a group, send an invite and everyone shares it, whether that group is a family, a school class or a hobby club, and you can keep as many calendars as you need. Filters show all your calendars together or switch to one at a time, so personal plans and family schedules stay readable. The free version covers this core sharing. Premium removes ads and adds file and photo attachments on events, pinned events, a vertical view of up to 3 days and dedicated support, at 4.49 USD per month or 44.99 USD per year with the first month free. The limits are the ads on the free version and a feature set aimed at households rather than offices, with no meeting tools such as booking pages. For families who want one calendar everyone actually opens, it is a good free choice.

Any.do suits people who think in tasks first and want their calendar in the same place. The free Personal plan includes tasks and lists, reminders, the calendar, a daily planner and sync across devices, and Any.do says the basic version covers unlimited tasks, subtasks and grocery lists. That makes it a reasonable free planner for someone who wants to see to-dos and appointments together. The paid tiers add what heavier users miss. Premium costs $4.99 per month billed annually or $7.99 monthly and adds recurring tasks, WhatsApp reminders, location reminders and color tags. The Family plan costs $8.33 per month for 4 members billed annually and adds a shared family space. The drawback for this list is that recurring tasks are paid, and the calendar is a view inside a task manager rather than a full calendar with booking pages or rich sharing. Use it as a free planner, and pair it with Google or Apple Calendar for heavy scheduling.

Thunderbird is the answer for anyone who wants a calendar that is free with no upsell at all. It is an open source email app from the Mozilla family that keeps messages, calendars and contacts in one desktop app, and the project says it is free forever and funded by donations. Thunderbird states that it does not collect personal data, sell ads in your inbox or train AI on your conversations. It handles several accounts separately or in a unified inbox and can be customized heavily with add-ons and layout settings, and Zoho lists Thunderbird among the calendars it syncs with. The trade-offs come from its design. It is an email client first, so the calendar is one panel among several, and it is built for desktop computers rather than as a phone calendar. Setup takes more steps than signing into Google or Apple. For a privacy-minded desktop user who wants nothing to pay, ever, it fits well.