App Store

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Accessing the App Store

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App categories

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Calendar

• Google Calendar - Google Workspace calendar sync
• Outlook Calendar - Microsoft 365 and Exchange integration
• Apple Calendar - iCloud calendar support
• CalDAV - Any CalDAV-compatible calendar
• Lark Calendar - Lark Suite calendar
• Feishu Calendar - ByteDance Feishu
• Zoho Calendar - Zoho suite integration
• ICS Feed - Subscribe to read-only calendar feeds

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Video conferencing

• Zoom - Industry-leading video platform
• Google Meet - Google Workspace video calls
• Microsoft Teams - Teams meetings for work/school accounts
• Cal Video - Built-in video by Daily.co
• Jitsi Meet - Free, open-source video
• Whereby - Browser-based meetings
• Webex - Cisco Webex integration
• Huddle01 - Decentralized video conferencing
• Around - Modern remote video
• Tandem - Virtual office platform

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Payment

• Stripe - Credit cards, digital wallets, bank transfers
• PayPal - PayPal accounts and credit cards
• Alby - Bitcoin Lightning Network payments
• HitPay - APAC e-wallets and payment methods
• BTCPay Server - Self-hosted Bitcoin processing

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CRM

• HubSpot - Cloud-based CRM for sales and marketing
• Salesforce - Enterprise CRM integration
• Pipedrive - Sales-focused CRM
• Close.com - Inside sales CRM
• Zoho CRM - Zoho’s customer management platform
• Zoho Bigin - Lightweight CRM for small businesses
• Attio - Modern, flexible CRM

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Analytics

• Google Analytics 4 - Website analytics and event tracking
• Plausible - Privacy-friendly analytics
• Fathom - Simple, privacy-focused analytics
• PostHog - Product analytics and feature flags
• Matomo - Self-hosted analytics
• Umami - Open-source analytics
• TWIPLA - Visitor analytics and heatmaps
• Meta Pixel - Facebook conversion tracking
• Google Tag Manager - Tag management system

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Automation

• Zapier - Connect to 5000+ apps with workflows
• Make (formerly Integromat) - Advanced automation platform
• n8n - Open-source workflow automation
• Pipedream - Developer-focused automation
• Raycast - Productivity launcher with Cal.com integration

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Messaging and notifications

• Slack - Send booking notifications to Slack channels
• Discord - Post bookings to Discord servers
• Telegram - Receive booking alerts via Telegram
• WhatsApp - WhatsApp booking notifications
• Signal - Privacy-focused messaging
• Campfire - Basecamp-integrated chat

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AI and automation

• Granola - AI meeting notes and summaries
• ElevenLabs - AI voice synthesis
• Synthflow - AI phone agents
• Retell AI - Conversational AI
• Bolna - Voice AI for calls
• Fonio AI - Meeting transcription
• Chatbase - AI chatbot integration

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Productivity

• Routing Forms - Conditional routing based on form responses
• QR Code - Generate QR codes for booking pages
• Auto Check-in - Automatic check-in for appointments
• Dub - Link shortening and analytics
• Cron - Calendar app with Cal.com integration
• Roam Research - Note-taking integration
• Notion - Connect bookings to Notion databases

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Other categories

• Email - SendGrid for transactional emails
• HR - Deel for contractor and employee management
• Project management - Linear, Basecamp, Notion
• Data privacy - BAA for HIPAA compliance
• Framer - Embed Cal.com in Framer sites
• WordPress - WordPress plugin

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Installing integrations

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Managing installed apps

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Viewing installed apps

1. Go to Settings > Apps
2. Filter by “Installed” to show only connected apps
3. Click an app to view its settings or disconnect

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Updating app settings

1. Find the installed app in Settings > Apps
2. Click “Settings” or the gear icon
3. Modify configuration options
4. Save changes

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Disconnecting apps

1. Go to Settings > Apps
2. Find the installed app
3. Click “Disconnect” or “Uninstall”
4. Confirm removal
5. Optionally revoke access in the third-party service

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App permissions

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Common OAuth scopes

• Calendar apps - Read/write calendar events, view calendar lists
• Video apps - Create meetings, manage meeting settings
• CRM apps - Read/write contacts, create deals or opportunities
• Analytics apps - Track page views and events

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API key requirements

1. Sign up for an account with the service
2. Generate an API key in their dashboard
3. Copy and paste the key into Cal.com
4. Cal.com stores the key securely

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Popular integrations by use case

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For freelancers and consultants

• Google Calendar - Sync personal and work calendars
• Zoom - Professional video meetings
• Stripe - Accept payments for consultations
• Zapier - Automate invoicing and follow-ups
• Google Analytics - Track booking page performance

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For sales teams

• HubSpot or Salesforce - Sync leads and opportunities
• Microsoft Teams - Internal video conferencing
• Google Calendar - Team calendar sync
• Demodesk - Sales-focused video with screen control
• Slack - Booking notifications to team channels

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For customer support

• Zendesk (via Zapier) - Create support tickets from bookings
• Jitsi Meet - Free video for support calls
• Linear - Track issues and feature requests
• Discord - Community support channels
• PostHog - Analyze booking funnel

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For educators and coaches

• Cal Video - Simple, built-in video
• Google Meet - Free for Google Workspace
• Stripe - Accept course or session payments
• Routing Forms - Route students based on questionnaire
• Notion (via Zapier) - Log sessions to Notion database

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For agencies and teams

• Round Robin - Distribute bookings across team members
• Microsoft Teams - Organization-wide video
• HubSpot - Client management
• Make - Complex automation workflows
• Slack - Team notifications

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Building custom integrations

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App Store CLI

cd packages/app-store
yarn app-store:create

• Metadata file (_metadata.ts or config.json)
• API routes for OAuth and webhooks
• UI components for settings and configuration
• Type definitions

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Integration structure

packages/app-store/your-app/
├── _metadata.ts          # App configuration
├── api/
│   ├── add.ts            # OAuth initiation
│   ├── callback.ts       # OAuth callback handler
│   └── webhook.ts        # Webhook endpoint
├── lib/
│   └── api-client.ts     # Service API wrapper
├── components/
│   └── settings.tsx      # Settings UI
├── static/
│   └── icon.svg          # App icon
├── package.json          # Dependencies
└── zod.ts                # Input validation schemas

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Metadata configuration

// _metadata.ts
import type { AppMeta } from "@calcom/types/App";

export const metadata = {
  name: "Your App",
  description: "Brief description of what your app does.",
  type: "your_app_type",
  variant: "conferencing", // or "calendar", "payment", "crm", etc.
  slug: "your-app",
  category: "conferencing",
  logo: "icon.svg",
  publisher: "Your Company",
  url: "https://yourapp.com",
  email: "[email protected]",
  dirName: "your-app",
  isOAuth: true, // or false if using API keys
} as AppMeta;

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Development resources

• App Store CONTRIBUTING.md
• Example apps in packages/app-store/
• Cal.com Developer Docs

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App Store for self-hosted

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Required environment variables

# Google (Calendar + Meet)
GOOGLE_API_CREDENTIALS='{"web":{"client_id":"...","client_secret":"..."}}'

# Microsoft (Outlook + Teams)
MS_GRAPH_CLIENT_ID=your_client_id
MS_GRAPH_CLIENT_SECRET=your_client_secret

# Zoom
ZOOM_CLIENT_ID=your_zoom_client_id
ZOOM_CLIENT_SECRET=your_zoom_client_secret

# Stripe
STRIPE_CLIENT_ID=your_stripe_client_id
NEXT_PUBLIC_STRIPE_PUBLIC_KEY=your_stripe_public_key
STRIPE_PRIVATE_KEY=your_stripe_private_key

# PayPal
PAYPAL_CLIENT_ID=your_paypal_client_id
PAYPAL_SECRET_KEY=your_paypal_secret_key

# Daily.co (Cal Video)
DAILY_API_KEY=your_daily_api_key

# HubSpot
HUBSPOT_CLIENT_ID=your_hubspot_client_id
HUBSPOT_CLIENT_SECRET=your_hubspot_client_secret

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App verification and trust

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Publisher verification

• Cal.com published - Built and maintained by Cal.com team
• Verified publishers - Third-party apps reviewed by Cal.com
• Community apps - Open-source contributions from the community

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Security considerations

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Troubleshooting

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App won’t install

1. Check that you have a compatible account type (e.g., Business account for PayPal)
2. Verify you’re logged in to the correct account
3. Ensure popup blockers aren’t preventing OAuth redirects
4. Try a different browser or incognito mode
5. Check Cal.com status page for known issues

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Integration not working after installation

1. Verify the integration is enabled for the specific event type
2. Re-authenticate by disconnecting and reconnecting
3. Check integration settings for required fields
4. Test with a fresh booking
5. Review application logs for errors (self-hosted)

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OAuth redirect errors

1. For self-hosted: Verify redirect URIs in OAuth app settings
2. Ensure your domain matches the OAuth app configuration
3. Check that environment variables are set correctly
4. Confirm OAuth app is enabled (not in development mode)

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API rate limits

1. Some services limit API calls per hour/day
2. If you hit limits, wait for the reset period
3. Consider upgrading to a higher tier with the service
4. Spread bookings across multiple integrations if possible

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App Store roadmap

• Enhanced CRM sync - Bidirectional data flow with major CRMs
• Advanced routing - AI-powered meeting routing
• More payment providers - Additional regional payment methods
• Calendar pooling - Combine multiple calendars into one availability view
• App marketplace - Community-built apps available for installation

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Next steps