Voice AI commands for faster work

    Booking software for clients,
    appointments and invoices

    Calendra is a platform for service businesses that brings together online booking, appointment calendars, reminders, invoices, payments, analytics and client data in one place.

    Try it free
    14-day free trialNo credit card required
    Features

    Everything you need,
    in one place.

    From the first booking to the final invoice — Calendra covers the whole flow.

    Booking management

    A calendar with daily, weekly, and monthly views. Automatic Google Calendar sync.

    Invoicing

    Automatically generate invoices when a session ends. Export for accounting in one click.

    Analytics

    Track revenue, utilization, trends, and customer conversions with visual reports.

    Customer data

    A central customer view with appointment history, notes, and contact details.

    AI voice commands

    Create and manage bookings with your voice. “Book Ana for Tuesday at 10 AM” — done.

    Reminders

    Automatic SMS and email reminders for appointments and unpaid invoices.

    Security and GDPR

    Encrypted data, secure EU hosting, and GDPR compliance.

    Integrations

    Google Calendar, Stripe payments, Zoom video calls, and more — all connected.

    Pricing

    Simple & transparent

    Choose the plan that best fits your business.

    Basic

    14.90€/ month

    For individuals who are just getting started.

    • 1 user (additional users can be purchased)
    • Calendar
    • Customer overview
    • Analytics
    • One-way email messaging
    • 30-minute introductory call
    • Email support

    Professional

    24.90€/ month

    For growing businesses.

    • Everything in the Basic plan +
    • Cloud file storage (up to 2GB)
    • Invoice issuing
    • Bulk SMS messaging
    • One-way SMS messaging (pay per use)
    • One-way WhatsApp messaging (pay per use)
    • Phone support
    Popular

    Premium

    39.90€/ month

    All advanced features for demanding teams.

    • Everything in the Professional plan +
    • Unlimited cloud file storage
    • CSV import of bank account records
    • Two-way messaging (email, WhatsApp)
    • AI voice assistant for reservations
    • Rooms and equipment
    • Priority support

    Enterprise

    Custom

    For small and large companies with specific requirements.

    • Unlimited users
    • Unlimited locations
    • Custom development
    • Integration with other tools
    • Live or online training
    • Priority request processing
    • Dedicated Account Manager

    Package comparison

    FeatureBasicProfessionalPremiumEnterprise
    Calendar
    Customer overview
    Analytics
    Email messagingOne-wayTwo-wayTwo-wayTwo-way
    SupportEmailPhonePriorityAccount Manager
    Cloud file storageup to 2GB
    Invoice issuing
    SMS messaging
    WhatsApp messagingOne-wayTwo-wayTwo-way
    AI assistant
    Rooms
    AI Transparency

    Clear disclosure of AI services

    Calendra uses OpenAI services for selected AI-powered features in the application. This public disclosure helps users and reviewers quickly understand which AI services are in use.

    Which AI services we use

    Calendra uses OpenAI to support selected AI-powered functionality, including voice AI commands and other AI-assisted experiences in the product.

    How they are used

    OpenAI services are used to process user input and help automate specific parts of the workflow inside the application.

    What users should know

    AI output can contain errors or omissions, so it should be reviewed as appropriate before being relied on for business decisions or communications.

    More details

    The full public disclosure is available on the dedicated AI Transparency page.

    Open AI Transparency