Calendly vs Untis Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

Calendly

0.0 (0 reviews)

Calendly is an automated scheduling platform that eliminates back-and-forth emails by allowing others to book meetings directly on your calendar based on your real-time availability and custom preferences.

Starting at Free
Free Trial 14 days
VS

Untis

0.0 (0 reviews)

Untis is a comprehensive school scheduling software that helps you create complex timetables, manage daily substitutions, and coordinate digital class registers to keep your entire educational institution running smoothly.

Starting at --
Free Trial NO FREE TRIAL

Quick Comparison

Feature Calendly Untis
Website calendly.com untis.com
Pricing Model Freemium Custom
Starting Price Free Custom Pricing
FREE Trial ✓ 14 days free trial ✘ No free trial
Free Plan ✓ Has free plan ✘ No free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment cloud mobile desktop saas on-premise mobile desktop
Integrations Google Calendar Outlook Zoom Salesforce HubSpot Slack Stripe PayPal Microsoft Teams Zapier Microsoft Teams WebUntis Moodle various school MIS systems
Target Users solopreneur small-business mid-market enterprise small-business mid-market enterprise
Target Industries education
Customer Count 0 0
Founded Year 2013 1970
Headquarters Atlanta, USA Stockerau, Austria

Overview

C

Calendly

Calendly simplifies the way you schedule meetings by removing the frustrating back-and-forth of email chains. You simply set your availability preferences, share your personal link, and let invitees pick a time that works for everyone. It automatically syncs with your existing calendars to ensure you are never double-booked and sends instant confirmations to all parties involved.

You can use it for everything from simple one-on-one check-ins to complex group sessions and round-robin sales calls. The platform handles the time zone conversions and reminder notifications automatically, so you can focus on the actual meeting rather than the logistics of setting it up. It scales easily from individual freelancers to large global enterprises requiring advanced security and team routing.

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Untis

Untis helps you master the complex challenge of school organization by automating the creation of conflict-free timetables. You can manage teacher schedules, room assignments, and student groups through a centralized platform that adapts to your school's specific pedagogical requirements. Whether you are handling simple weekly plans or intricate multi-period rotations, the system ensures all resources are utilized effectively while respecting individual constraints.

You can also handle daily changes with ease using the integrated substitution planning tools. When a teacher is absent, the software suggests the best possible replacements based on availability and qualifications, instantly notifying students and staff via the mobile app. It serves as a digital hub for your school, replacing paper-based class registers with digital versions that track attendance and lesson content in real-time.

Overview

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Calendly Features

  • Calendar Sync Connect up to six calendars per user to automatically check your real-time availability and prevent any double-bookings.
  • Automated Workflows Send automated thank-you notes, meeting reminders, and follow-up emails to your invitees to reduce no-shows and save time.
  • Round Robin Scheduling Distribute incoming meetings automatically among your team members based on availability, priority, or equal distribution logic.
  • Meeting Polls Vote on preferred times for large group meetings and let the majority decide the best slot without endless email threads.
  • Custom Branding Remove the Calendly logo and add your own branding to booking pages for a professional, cohesive client experience.
  • Payment Integrations Collect payments via Stripe or PayPal directly at the moment of booking to streamline your billing process.
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Untis Features

  • Automated Timetabling. Generate complex school schedules automatically while respecting thousands of individual constraints for teachers, students, and specialized classrooms.
  • Substitution Planning. Manage daily teacher absences quickly by finding the most suitable replacements and instantly updating the digital notice board.
  • Digital Class Register. Track student attendance, record lesson topics, and manage homework assignments digitally to eliminate paperwork and improve data accuracy.
  • Untis Mobile App. Provide your students and teachers with real-time access to their personal schedules and instant push notifications for any changes.
  • Resource Management. Coordinate the booking of specialized rooms, laboratory equipment, and shared media devices to prevent double-bookings and scheduling conflicts.
  • Student Choice Modules. Allow your students to select elective courses and afternoon activities directly through the platform for automated enrollment processing.

Pricing Comparison

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Calendly Pricing

Free
$0
  • 1 calendar connection
  • Unlimited one-on-one events
  • One event type
  • Automated event notifications
  • Mobile app access
U

Untis Pricing

Pros & Cons

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Calendly

Pros

  • Eliminates repetitive back-and-forth emails effectively
  • Automatic time zone detection works flawlessly
  • Clean and intuitive interface for invitees
  • Seamless integration with major calendar providers

Cons

  • Free version limited to one event type
  • Customization options restricted on lower tiers
  • Workflows can be complex to set up initially
A

Untis

Pros

  • Handles extremely complex scheduling constraints with ease
  • Mobile app provides reliable real-time updates for students
  • Modular system allows you to scale features as needed
  • Strong compliance with European data protection standards

Cons

  • Significant learning curve for the initial setup
  • User interface feels dated compared to modern SaaS
  • Pricing can be high for very small schools
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