CalendarBridge

What CalendarBridge does

CalendarBridge is a privately held SaaS company, founded in May 2020 and headquartered in Miami, Florida, that operates a real-time calendar synchronization platform connecting Google Calendar, Microsoft 365/Outlook, and Apple iCloud via OAuth2. The product is built around a privacy-first sync engine that propagates event changes across connected calendars within 1–2 minutes for Microsoft/Google and every 5–10 minutes for iCloud, while letting users control whether only busy/free blocks or full event details are shared. The platform is anchored by a granted US patent (US-11461739-B2) covering the synchronization-with-privacy architecture and is supported by SOC 2 Type 1 verification (Type 2 in progress) plus Microsoft 365 GCC High and HIPAA eligibility for regulated buyers.

The product portfolio consists of the core sync engine, a Unified Calendar view, shareable Scheduling Pages with optional Zoom virtual meeting links, an AI Scheduling Assistant that autonomously coordinates meetings within email conversations, and a free standalone ICS File Generator utility. Distribution is product-led: self-serve signup via app.calendarbridge.com, no-credit-card free trial, presence on Google Play, Apple App Store, and Microsoft Store, and an SEO-driven content engine with comparison pages against OneCal, Blockit AI, Zapier, OGCS, and Clockwise/Reclaim. The website is localized in 13 languages. The company has reached 100,000+ users and 500+ organizations worldwide, with named enterprise references including Uber, VMware, Zoom, Accolade, Prism HR, and Renaissance.

Revenue is generated through tiered subscriptions: individual plans starting at $4/month (or $48/year) and a Premium plan at $8/month that bundles the AI Scheduling Assistant, plus group/organizational plans with centralized billing, transferable licenses, and admin-managed syncing. The company's stated go-to-market targets consultants and fractional resources juggling multiple client environments, busy professionals with multiple calendars, executive assistants, and organizations undergoing tenant migrations, mergers and acquisitions, or with complex multi-tenant structures. No venture funding rounds, ownership structure, or revenue figures are disclosed in the source material; CalendarBridge Inc is incorporated in Delaware and governed by US law.

Name

CalendarBridge

Legal name

CalendarBridge Inc

Website

https://calendarbridge.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

CalendarBridge is a SaaS calendar synchronization platform that keeps Google, Microsoft 365/Outlook, and iCloud calendars aligned in real time via OAuth2, with patented privacy-first syncing, scheduling pages, and an AI scheduling assistant. Founded in 2020 in Miami, Florida, it serves 100,000+ individuals and 500+ organizations, including Fortune 500 enterprises, via subscription plans starting at $4/month.

Ownership category

akta.pro rank

Product category

Calendar Synchronization Software

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Email, Calendar & Scheduling (BPAMAMAC)

akta.pro secondary industry

Appointment Scheduling & Reservation Management (HSACAIAG)

Keywords

• Calendar synchronization software
• Scheduling automation tools
• AI meeting scheduling
• Cross-platform calendar sync
• Booking link solutions

Headquarters

HQ city

Boston

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Marketing or Sales, Operations

Revenue model

1. Subscription Plans (Individual): CalendarBridge offers tiered individual subscription plans starting at $4/month. Plans include real-time calendar syncing, unified calendar, scheduling pages, and AI scheduling assistant (on premium tier). Annual billing provides a discount. A free trial is available with no credit card required.
2. Group/Organization Plans: Group plans provide centralized billing, transferable licenses, and admin-managed syncing capabilities for organizations. Admins can sync end-user calendars without requiring end users to take any action. Offered alongside individual plans.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels6 records

Core offering

CalendarBridge is a SaaS platform that keeps Google Calendar, Microsoft 365/Outlook, and Apple iCloud calendars bidirectionally synchronized in real time via OAuth2, preventing double bookings and ensuring accurate availability across connected accounts. The product suite adds a Unified Calendar view, shareable Scheduling/booking pages with optional virtual meeting links, and an AI Scheduling Assistant that autonomously coordinates meetings inside email threads. Subscription plans are sold to individuals ($4/month entry tier) and to groups/organizations (centralized billing, transferable licenses, admin-managed syncing).

Product overview

CalendarBridge is a calendar synchronization SaaS platform consisting of a core engine and several integrated modules. The core CalendarBridge platform provides real-time bidirectional calendar syncing across Google Calendar, Microsoft 365/Outlook, and Apple iCloud, with optional virtual meeting link support (Zoom). Built around this core sync engine, the product portfolio includes the AI Scheduling Assistant (an autonomous agent operating within email conversations to automate meeting coordination), Scheduling Pages (booking links for external scheduling), and the Unified Calendar (a consolidated view across all connected accounts). A free ICS File Generator tool is offered as a standalone utility. The platform is available in individual plans (starting at $4/month) and group/organizational plans with centralized billing, transferable licenses, and admin-managed syncing. The company holds patents on its calendar synchronization and privacy technology (US-11461739-B2), is headquartered in Miami, Florida, USA, and is subject to Delaware (USA) law.

Differentiator

Problem solved

Functional benefit

Products and services

• CalendarBridge Calendar Synchronization Platform Cloud-based SaaS platform that keeps Google Calendar, Microsoft 365/Outlook, and Apple iCloud calendars bidirectionally synchronized in real time via OAuth2 to prevent double bookings and ensure accurate availability across every connected account. Sold via tiered individual subscriptions (from $4/month) and group/organizational plans with centralized billing and admin-managed syncing.
• ICS File Generator Free standalone web tool that generates .ics (iCalendar) event files importable into any calendar application including Google Calendar, Outlook, and Apple Calendar, with support for recurring events, all-day events, and email sharing. Available without an account or CalendarBridge subscription.
• AI Scheduling Assistant AI-powered scheduling agent that connects to Google Calendar, Microsoft 365, Outlook, or iCloud and operates inside email conversations to check availability, propose meeting times, coordinate attendees, schedule/reschedule meetings, and manage the user's calendar on their behalf. Included at no additional cost in the Premium plan at $8/month.

Quantifiable outcome

• Sync propagation within 1-2 minutes for Microsoft/Google calendars; 5-10 minutes for iCloud/ICS
• +3 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability5 records

Feature8 records

Partnerships

Four partnerships are on record, tiered core.

• Google CalendarcoreTechnology or IntegrationCalendarBridge integrates with Google Calendar for real-time bidirectional synchronization. Google Calendar is one of the primary calendar platforms supported alongside Microsoft 365/Outlook and Apple iCloud. The integration enables events created/updated in Google Calendar to propagate to connected calendars within 1-2 minutes.
• Microsoft 365 / OutlookcoreTechnology or IntegrationCalendarBridge integrates with Microsoft 365 (including Exchange Online Plan 1 or 2, and Microsoft 365 Business Basic, Standard, or Premium) and Outlook personal accounts (outlook.com, hotmail.com, live.com, msn.com). Supports GCC High government cloud environment. Real-time sync within 1-2 minutes.
• Apple iCloudcoreTechnology or IntegrationCalendarBridge integrates with Apple iCloud calendars. Sync occurs every 5-10 minutes for iCloud calendars (vs real-time for Microsoft/Google). iCloud integration is a core supported platform for calendar synchronization.
• ZoomcoreTechnology or IntegrationCalendarBridge supports scheduling pages with optional virtual meeting links. Zoom is referenced in comparison pages as a supported integration alongside Outlook, Google, and Apple iCloud calendars. CalendarBridge's scheduling feature can automatically generate Zoom meeting links.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• OneCal: OneCal is the closest direct competitor to CalendarBridge, offering calendar synchronization between Google, Outlook, and iCloud. CalendarBridge explicitly positions itself as a superior alternative on comparison pages targeting the same use cases.

Emerging players

• Clockwise: Clockwise is an AI-powered calendar automation tool that focuses on scheduling optimization, team coordination, and focus time. It overlaps with CalendarBridge's scheduling and AI assistant capabilities but emphasizes team productivity rather than cross-account sync.
• Reclaim.ai: Reclaim.ai is an AI scheduling assistant for task, meeting, and habit planning on Google Calendar and Outlook. It competes with CalendarBridge's AI Scheduling Assistant for the same AI-driven scheduling workflow.
• Blockit AI: Blockit AI is an AI scheduling assistant focused on healthcare and enterprise scheduling workflows. CalendarBridge explicitly compares itself against Blockit AI on price and features.
• SavvyCal: SavvyCal is a scheduling tool focused on ranked availability and personalized booking links for individuals and small teams. It overlaps with CalendarBridge's Scheduling Pages product for individual/consultant users.

Broad incumbents

• Calendly: Calendly is a leading scheduling and booking link platform widely used by enterprises. It overlaps with CalendarBridge's Scheduling Pages product and is a broader incumbent in the meeting scheduling category.
• Zapier: Zapier is a broad workflow automation platform that includes calendar sync automations among thousands of integrations. It is referenced by CalendarBridge as a competitor comparison target and overlaps on cross-platform calendar connectivity.
• Microsoft Bookings: Microsoft Bookings is a native Microsoft 365 scheduling and booking app that provides appointment scheduling within the Microsoft ecosystem. It competes with CalendarBridge's Scheduling Pages for Microsoft-centric customers.
• Google Calendar Appointment Scheduling: Google's native appointment scheduling feature within Google Calendar competes with CalendarBridge's scheduling pages for Google Workspace users and represents a platform-level threat.
• Acuity Scheduling: Acuity Scheduling is an established Squarespace-owned scheduling platform serving SMBs and consultants. It overlaps with CalendarBridge's booking pages and serves the same consultants and fractional resources segment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@calendarbridge
• Facebookfacebook.com/CalendarBridge
• LinkedInlinkedin.com/company/calendarbridge
• Xx.com/CalendarBridge

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CalendarBridge