The Tuta Calendar Insider’s Guide
Everything we know about Tuta Calendar in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Tuta Calendar
The Insider’s Guide
End-to-end encrypted calendar bundled with Tuta Mail
Every plan, grade, refund rule and rival among calendar and scheduling apps, read from Tuta Calendar’s own pages.
Made by Tutao GmbH · checked Oct 5, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Tuta Calendar’s own pages, its app-store listings and our grades. Every fact in it is on Tuta Calendar’s page too, where it is kept up to date. Checked Oct 5, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.4
GPA, above 18 of the 74 other calendar and scheduling apps we grade
Tuta Calendar is the encrypted calendar from Tutao GmbH, the German company behind Tuta Mail. Events, invitations, shared calendars and reminder notifications are encrypted end to end, and the apps are open source. It comes with every Tuta account: the free plan includes one calendar, while sharing, event invitations and unlimited calendars come with Tuta's paid plans, because the calendar is not sold on its own.
To get you started, here are 9 things to know about Tuta Calendar, taken from its own pages and our grades.
It comes with a Tuta account, free for one calendar.
- 1
Best for a calendar your provider can't read
Tuta Calendar encrypts events, invitations and reminder notifications end to end, and the apps are open source.
- 2
Paid plans start at about $3.36 a month
As its pricing page puts it: €3 per month, paid yearly (€3.60 paid monthly).
- 3
There is a free plan
One encrypted calendar and 1 GB of storage, with web, mobile and desktop apps. No calendar sharing, event invitations or offline support.
- 4
It runs on 6 platforms
Web, macOS, Windows, Linux, iOS and Android.
- 5
End-to-end encryption
Events, invitations and shared calendars are encrypted end to end with what Tuta calls quantum-safe encryption, so the provider cannot read them.
- 6
Encrypted reminders
Event reminders arrive as push notifications on phones and computers. They are sent encrypted and kept hidden from the phone's operating system.
- 7
Calendar sharing
On paid plans a calendar can be shared with family or colleagues with read only, read and write, or write and manage sharing rights.
- 8
A 2.4 GPA, above 18 of 74
That is against the other calendar and scheduling apps we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
The plain part of Tuta Calendar you could make: calendar. What surrounds it you could not. The 3 things listed below take a company, not a weekend.
Tuta Calendar at a glance
- Pricing
- Free plan, from €3 per month, paid yearly (€3.60 paid monthly)
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web, macOS, Windows, Linux, iOS, Android
- Made by
- Tutao GmbH
- Category
- Calendar & Scheduling
- Our grade
- 2.4 GPA, fair
The report card
Best for a calendar your provider can't read
Tuta Calendar encrypts events, invitations and reminder notifications end to end, and the apps are open source. It comes with a Tuta account, free for one calendar. But free has no sharing, no invitations and no offline use, paid features come only with Tuta's mail plans from €3 a month, and other calendars come in by import, with no two-way sync to Google or Outlook.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | B | Tuta's lowest paid personal plan is €3 a month paid yearly, €3.60 monthly, taxes in, which lands in the cheaper quarter of calendar tools. And that buys Tuta's encrypted email, unlimited calendars and 20 GB of storage as well, because the calendar isn't sold on its own. |
| Free plan and trial | C | One encrypted calendar and 1 GB, with apps on every platform. But no calendar sharing, no event invitations and no offline support, so it's a calendar for you alone. Not being able to invite anyone to anything is a cap you meet on day one. |
| Features | C | End-to-end encryption on events, invitations and shared calendars, reminders hidden from your phone's operating system, and sharing with read or write rights on paid plans. Beyond the encryption it's a plain calendar, and the listing's own gap is the big one: other calendars come in by import, with no two-way sync. |
| Ease of use | C | No store rating on record, and getting started means opening a Tuta account first, because the calendar isn't sold separately. Old calendars have to be imported in the settings rather than connected. |
| Platforms and integrations | B | Web, Windows, macOS, Linux, iPhone and Android, with the Android app on F-Droid too. But the only thing it connects to is Tuta Mail, and no API is listed. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Tuta Calendar is for
- Fits if you want a calendar that its own provider can't read
- Works for people who already use Tuta Mail and want email, contacts and calendar in one account
Who it is not for
- Skip it if you need it kept in step with a Google or Outlook calendar, as it only imports
- Tight if you're staying free and want to send invitations, share a calendar or work offline
- Not for you if you only want a calendar, since the paid features come with Tuta's mail plans
- Too light for linking other tools, as Tuta Mail is its only connection and no API is listed
- Watch out: prices are in euros, with taxes included on personal plans and added on business plans
Good to know
Good for
- People who want a calendar their provider cannot read
- Tuta Mail users who want email, contacts and calendar in one account
- Linux users looking for an open-source desktop calendar client
Worth knowing
- The Free plan includes one calendar and has no calendar sharing, event invitations or offline support.
- Calendar has no subscription of its own: paid features come with Tuta's paid personal or business mail plans.
- Prices are listed in euros: personal plans include taxes, business plans exclude them, and totals can vary with payment platform fees and exchange rates.
- Other calendars are brought in by import; the calendar page mentions no two-way sync with Google or Outlook calendars.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
~$3.36
A month to start. There is a free plan too
Tuta Calendar has a free plan. Paid plans start at €3 per month, paid yearly (€3.60 paid monthly).
But no calendar sharing, no event invitations and no offline support, so it's a calendar for you alone.
Free
€0
One encrypted calendar, 1 GB of storage and apps on every platform. No calendar sharing or event invitations.
Revolutionary
€3
per month, paid yearly (€3.60 paid monthly), incl. taxes
Tuta's personal mail and calendar plan: unlimited calendars, calendar sharing, event invitations, offline support and 20 GB of storage.
Legend
€8
per month, paid yearly (€9.60 paid monthly), incl. taxes
The same calendar features with 500 GB of storage, 30 extra email addresses, 10 custom domains and priority email support.
Essential
€6
per user / month, paid yearly (€7.20 paid monthly), excl. taxes
Business plan with unlimited calendars, sharing and event invitations, shared mailboxes and 50 GB of storage per user.
Advanced
€8
per user / month, paid yearly (€9.60 paid monthly), excl. taxes
Business plan with the same calendar features, 500 GB of storage per user, 10 custom domains and priority email support.
Unlimited
€12
per user / month, paid yearly (€14.40 paid monthly), excl. taxes
Business plan with 1,000 GB of storage per user, unlimited custom domains and custom branding.
The free plan
One encrypted calendar and 1 GB of storage, with web, mobile and desktop apps. No calendar sharing, event invitations or offline support.
Read from tuta.com on Oct 5, 2026.
Ways to pay less
Annual discount
Pay yearly and save two months
Tuta's pricing page shows a yearly payment saving €7.20 on the lowest paid plan (€36 instead of €43.20) and €19.20 on Legend (€96 instead of €115.20).
Stated on tuta.comNonprofit
50% off for nonprofits and schools
Registered nonprofits and schools for general education can apply to Tuta's sales team for a 50% discount on a subscription.
Stated on tuta.comOther savings
Free for qualifying open source projects
Open source teams can apply by email for a free version of Tuta. Tuta's blog sets out which projects qualify.
Stated on tuta.com
What the app costs elsewhere
Each country’s App Store price for “Revolutionary (Monthly)”, against $3.99 in the United States, in dollars at the day’s rate. The four cheapest and the four dearest of 11.
| Country | Price there | In dollars | Against the US |
|---|---|---|---|
| Turkey | ₺149,99 | $3.05 | 24% less |
| Philippines | ₱ 199.00 | $3.17 | 21% less |
| Canada | $4.99 | $3.51 | 12% less |
| Indonesia | Rp 69ribu | $3.86 | about the same |
| Germany | 3,99 € | $4.47 | 12% more |
| South Africa | R79.99 | $4.84 | 21% more |
| Mexico | $89.00 | $4.89 | 23% more |
| United Kingdom | £3.99 | $5.27 | 32% more |
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
6
Places it runs: Web, macOS, Windows, Linux, iOS and Android
End-to-end encrypted calendar bundled with Tuta Mail. Here is what it does, as its own site describes it, and what it covers: open source, end-to-end encrypted, calendar.
Web, Windows, macOS, Linux, iPhone and Android, with the Android app on F-Droid too.
- End-to-end encryption
- Events, invitations and shared calendars are encrypted end to end with what Tuta calls quantum-safe encryption, so the provider cannot read them.
- Encrypted reminders
- Event reminders arrive as push notifications on phones and computers. They are sent encrypted and kept hidden from the phone's operating system.
- Calendar sharing
- On paid plans a calendar can be shared with family or colleagues with read only, read and write, or write and manage sharing rights.
- Event invitations
- Paid plans can send and receive calendar invitations, and can send one encrypted to someone outside Tuta using a shared password.
- Apps on every platform
- Apps for Android and iPhone, open-source desktop clients for Windows, macOS and Linux, and a browser version. The Android app is also offered through F-Droid.
- Built into Tuta Mail
- The calendar shares an account with Tuta's encrypted email and contacts, and existing calendars can be imported in the settings.
Where it runs
- Web
- macOS
- Windows
- Linux
- iOS
- Android
What it works with
- Tuta Mail
Tuta Calendar is made by Tutao GmbH.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
18/74
Other calendar and scheduling apps it is graded above
Tuta Calendar's GPA of 2.4 is higher than 18 of the 74 other calendar and scheduling apps we grade, and level with 11.
It stands best on value for money (B, above 37 of 74) and worst on ease of use (C, above 0).
Its paid plans start at about $3.36 a month, against a middle price of $6 for the category: 14 of the 52 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 14 tools score higher and cost less.
Each grade against the category
Every bar is all 75 calendar and scheduling apps we grade, cut by the letter each got. Tuta Calendar’s own letter is outlined.
- BValue for moneyAbove 37 of 74
- CFree plan and trialAbove 3 of 74
- CFeaturesAbove 3 of 74
- CEase of useAbove 0 of 74
- BPlatforms and integrationsAbove 25 of 74
Price against what you get
Each dot is one of 67 calendar and scheduling apps. Further left costs less; higher up scores better on features, ease of use and platforms. Tuta Calendar is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
The plain part of Tuta Calendar you could make: calendar. What surrounds it you could not. The 3 things listed below take a company, not a weekend.
That makes this kind of software worth paying for, not this one in particular: 45 of the 74 other calendar and scheduling apps grade higher. It costs $40.34 a year. Tuta Calendar is open source, so there is a third way: take its code and run it yourself.
What you could make
- Calendar: an app builder makes this well.
What you could not
- Apps for macOS, Windows, Linux, iOS and Android that stay in step with each other.
- End-to-end encryption done properly.
- Sharing with other people, which means accounts and invitations.
What this rests on. Tuta Calendar’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Proton Calendar, Google Calendar, Apple Calendar, Zoho Calendar and Fossify Calendar
The 5 tools Tuta Calendar is most often weighed against, with where each one differs from it.
- 2.6GPA
Proton Calendar
Free plan · from $3.99/mo
End-to-end encrypted calendar from the maker of Proton Mail.
- Proton Calendar also covers booking links.
- 3.4GPA
Google Calendar
Free plan · from $7/mo
Online calendar from Google, free with a personal account.
- Only Tuta Calendar lists macOS, Windows and Linux apps.
- Tuta Calendar is open source and end-to-end encrypted, according to its own site.
- Google Calendar also covers tasks and booking links.
- 3.2GPA
Apple Calendar
Free
Free built-in calendar for iPhone, iPad, Mac and iCloud.com.
- Only Tuta Calendar lists Windows, Linux and Android apps.
- Tuta Calendar is open source and end-to-end encrypted, according to its own site.
- Apple Calendar also covers tasks and natural-language input.
- 3.0GPA
Zoho Calendar
Free plan · from $1/mo
Free online calendar for teams, part of Zoho Mail and Workplace.
- Only Tuta Calendar lists macOS, Windows and Linux apps.
- Tuta Calendar is open source and end-to-end encrypted, according to its own site.
- Zoho Calendar also covers natural-language input and booking links.
- 2.8GPA
Fossify Calendar
Free
Open-source Android calendar with no ads, tracking or account.
- 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.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
12
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Tuta Calendar free?
Tuta Calendar has a free plan. One encrypted calendar and 1 GB of storage, with web, mobile and desktop apps.
How much does Tuta Calendar cost?
Tuta Calendar lists 6 plans. Free: €0.
What platforms does Tuta Calendar work on?
Tuta Calendar is available on Web, macOS, Windows, Linux, iOS and Android.
Does Tuta Calendar offer any discounts?
Tuta Calendar publicly lists the following: Pay yearly and save two months; 50% off for nonprofits and schools; Free for qualifying open source projects.
Is Tuta Calendar open source?
Yes. Tuta Calendar is open source, according to its own site.
Is Tuta Calendar end-to-end encrypted?
Tuta Calendar describes itself as end-to-end encrypted on its own site.
What does Tuta Calendar integrate with?
Tuta Calendar's listing names Tuta Mail. A listing names up to eight integrations, so it may connect to more.
Who makes Tuta Calendar?
Tuta Calendar is made by Tutao GmbH.
What are the alternatives to Tuta Calendar?
The closest alternatives to Tuta Calendar in our directory are Proton Calendar, Google Calendar, Apple Calendar, Zoho Calendar and Fossify Calendar.
How does Tuta Calendar compare with other calendar and scheduling apps?
Tuta Calendar's GPA of 2.4 is higher than 18 of the 74 other calendar and scheduling apps we grade, and level with 11.
Is Tuta Calendar good value for money?
ToolGPA grades Tuta Calendar B for value for money. Its paid plans start at about $3.36 a month, against a middle price of $6 for the category: 14 of the 52 others that charge start lower.
Could I make my own version of Tuta Calendar?
The plain part of Tuta Calendar you could make: calendar. What surrounds it you could not.
Where this guide comes from
The prices, plans, platforms and features were read from Tuta Calendar’s own pages on Oct 5, 2026, and the grades were given on Oct 10, 2026. Graded from this listing, whose facts were read from Tuta's own pages on 5 October 2026. Also tested with a demo account on 2026-01-30.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Tutao GmbH. Prices change, so check tuta.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
3,189
Tools graded, in 94 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
3,189
tools graded
94
categories
426
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Tuta Calendar, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/tuta-calendar
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Tuta Calendar: The Insider's Guide", checked Oct 5, 2026. https://toolgpa.com/tools/tuta-calendar
Know someone choosing between calendar and scheduling apps?
Send them this guide: toolgpa.com/tools/tuta-calendar/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded calendar and scheduling apps after Tuta Calendar, each with an Insider's Guide of its own.
- Calendar & Scheduling Insider's GuideEvery one of the 75 calendar and scheduling apps we grade, compared
- Notion Calendar Insider's GuideFree calendar app that connects to Notion databases3.6 GPA
- Google Calendar Insider's GuideOnline calendar from Google, free with a personal account3.4 GPA
- World Time Buddy Insider's GuideVisual time zone converter and world clock for planning calls3.4 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Tuta Calendar’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Tuta Calendar is a trademark of its owner, and this guide is not made, paid for or approved by Tutao GmbH. Prices and plans change: check tuta.com before you buy.