Tandem

Free plan AndroidAPIiPhoneWeb

What Tandem is

Tandem is a central calendar for organizations that schedule rooms, facilities, groups, teams, events and equipment. It is aimed at schools and universities that need to share event information with their communities. The service provides shared calendars, time blocking and one-way calendar synchronization, with web access, Android and iOS apps, and an API. Conflict checks cover facilities, rooms, equipment, groups and teams, while account administrators can override conflicts. Organizations can configure approval workflows with any number of people or steps. Tandem can email event requests, cancellations and location changes, and it supports SMS calendar links. Outlook, Google Calendar, Apple Calendar and Samsung Calendar integrations are listed across all plans. The Free plan costs nothing and allows 3 admins, 2,000 viewers, 5 custom calendar pages and a 3-month event archive. Pro costs $20 a month and Enterprise costs $40 a month, each for up to 5 users at the starting price.

Who it suits

Tandem suits schools, universities and other organizations coordinating shared facilities, teams, events or equipment. It is also useful when communities need published calendars and event updates.

What it does well

Conflict checks cover rooms, equipment, groups and teams
Configurable multi-step event approval workflows
Email updates and SMS calendar links
Integrations include Outlook and Google Calendar
Android and iOS mobile apps

What to know first

Free plan limits admins, viewers and calendar pages
Free event archive lasts 3 months
Paid plans start at $20 a month
Calendar synchronization is one-way

Plans

Plan	Billed and limits	Price
Free	Free · 3 admins · 2,000 viewers · 5 custom calendar pages · 3-month event archive	Free
Pro	$20 / month for up to 5 users; 1 year save 5% · Up to 5 users at starting price	$20 a month
Enterprise	$40 / month for up to 5 users; 1 year save 5% · Up to 5 users at starting price	$40 a month

As tandem.co lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

Tandem combines organization-wide scheduling, approvals and community calendar updates in one system. Its free tier has clear capacity limits, while paid plans add broader organizational capabilities.

Facts from Tandem's own pages

API and data formats: Tandem says its API can extend event data to internal screens, websites and other services, and lists RSS, XML and CSV. · tandem.co, 11 Oct 2026
Approval workflows: Organizations can configure step-by-step event approval workflows with as many people or steps as needed. · tandem.co, 11 Oct 2026
Audience: Tandem describes itself as a tool for scheduling schools and universities and sharing event calendar information with their communities. · tandem.co, 11 Oct 2026
Calendar integrations: The pricing page lists Outlook, Google Calendar, Apple Calendar and Samsung Calendar integrations across all three plans. · tandem.co, 11 Oct 2026
Calendar sync: one_way · tandem.co, 22 Sept 2026
Community updates: Tandem can send event requests, cancellations and location changes to relevant community members by email, and supports SMS calendar links. · tandem.co, 11 Oct 2026
Company: The site identifies Intand Corporation in its privacy policy and describes Tandem as scheduling in Seattle; it does not state a founding year. · tandem.co, 11 Oct 2026
Conflict checks: The service checks for conflicts involving facilities, rooms, equipment, groups and teams; account admins can override conflicts. · tandem.co, 11 Oct 2026
Enterprise features: Enterprise adds facility rentals, equipment inventory, transportation, work orders, internal calendar reports and full account customization to Pro. · tandem.co, 11 Oct 2026
Free plan: Yes · tandem.co, 22 Sept 2026
Identity and directory integrations: The homepage lists Microsoft Accounts, Active Directory and Google Accounts; Enterprise includes SAML or OpenID Connect single sign-on and directory sync. · tandem.co, 11 Oct 2026
Mobile access: Tandem describes mobile features including event approval, cancellation, location updates, event creation and calendar search. · tandem.co, 11 Oct 2026
Mobile apps: ios and android · tandem.co, 22 Sept 2026
Plan limits: The Free plan allows 3 admins and 2,000 viewers, limits custom calendar pages to 5, and retains event archives for 3 months. · tandem.co, 11 Oct 2026
Purpose: Tandem is a central calendar for organizations to schedule rooms, groups, teams, events and equipment. · tandem.co, 11 Oct 2026
Security: Tandem's privacy policy says it uses technical, administrative and physical safeguards and encrypts sensitive form data using SSL; the policy was last updated November 13, 2020. · tandem.co, 11 Oct 2026
Shared calendars: Yes · tandem.co, 22 Sept 2026
Support: The pricing page lists chat and email support for every plan, while phone support and staff-wide training are listed for Pro and Enterprise. · tandem.co, 11 Oct 2026
Time blocking: Yes · tandem.co, 22 Sept 2026

Where Tandem stands on Freedom251

Calendar apps#49 of 194