One calendar for every teamVirto Calendar App for Microsoft Teams

Yes. Everyone who opens Virto Calendar App uses a license, whether they add events or only look at them. Count the people who will actually open the calendar, not everyone in your Microsoft 365 tenant. A license is assigned automatically the first time a person opens the app, and the 30-day cleaning option frees the licenses of people who have not opened it for 30 days. If most of your people only need to view a calendar, look at Virto Shared Calendar, where viewers never need a license.

How Virto Calendar App licensing works

One for each person who opens the calendar. One license covers the same person in SharePoint Online, in Microsoft Teams and in the browser, so nobody is counted twice. A license manager who only manages licenses and does not use the calendar needs none. The published plan covers up to 100 users; for more, we quote a plan for your number.

Each person sees and edits only what their own Microsoft 365 rights allow in each source: a SharePoint list, an Outlook calendar, a group calendar. Two colleagues who open the same calendar can therefore see different events. Microsoft 365 group calendars show only to members of the group.

Who sees what in Virto Calendar App

Add Virto Calendar App as a tab in any Teams channel or chat. Everyone opens the same consolidated calendar without leaving Teams, and each person sees the events their own Microsoft 365 permissions allow — no per-user setup required.

Yes. Add it as a tab in the private channel, the same way as in a standard channel. The tab works with the channel's own SharePoint site, so the channel's owners, who own that site, manage the calendar there and can name calendar managers. As everywhere, each person sees only what their own Microsoft 365 rights allow in each source: a SharePoint list kept on the channel's site shows its events to the channel's members only. Meetings scheduled in a private channel go to each channel member's own Outlook calendar, not to the team's group calendar, so they appear in Virto Calendar App when you add your Outlook calendar as a source. A private channel takes no extra licenses, since each person still uses one.

Channel meetings in Teams, private channels included

The built-in Teams channel calendar shows only that channel's meetings. Virto Calendar App overlays unlimited calendars — Outlook and Exchange, Microsoft resource calendars, SharePoint, Planner, and iCal feeds — in one color-coded Teams tab.

Outlook and Exchange Online calendars (personal and shared), Microsoft resource calendars (rooms and equipment), SharePoint calendars and lists, Microsoft Planner plans, and any iCal feed.

Yes — Virto Calendar is one product with two surfaces. This page covers the Microsoft Teams app; the Microsoft 365 / SharePoint Online version is available separately.

Virto Calendar App for Microsoft 365

Your calendar data stays where it already lives, in your own Microsoft 365 tenant (SharePoint lists, Exchange calendars, Planner) or in the internet calendars you connect. The app's backend runs on Microsoft Azure in the US and processes events in memory only; VirtoSoftware never stores your content. For Enterprise-tier customers, custom deployment into your own infrastructure or Microsoft 365 tenant is available.

Trust & Security Center

Virto Calendar App is published in the Microsoft commercial marketplace and has Microsoft Publisher Attestation — a self-assessment of its security, compliance, and data handling that Microsoft publishes on Microsoft Learn. Microsoft does not audit it, and the app does not hold Microsoft 365 Certification. Our security documents and the answers to your review are on the Security & Compliance page.

Security & Compliance