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What is Sondu?

Sondu is a modular operating system created for service businesses that want bookings, communications, space management, and professional sessions managed from one connected platform. Instead of requiring a business to piece together several unrelated tools, Sondu offers four products that can work independently or share information across the same account. Schedule is designed for appointment-based businesses and provides online booking pages, deposits, email reminders, automated waiting lists, and multi-person scheduling options. Connect centralizes customer enquiries from website chat, email, Instagram DMs, and Facebook Messenger so staff can work from a single queue. Its AI assistant drafts responses based on approved information and current diary data, while keeping a human in control of every message that is sent. Reserve supports businesses that rent rooms, studios, desks, chairs, or similar spaces by providing live availability, custom rate cards, off-peak pricing, member access, and automated monthly statements. Consult focuses on professionals selling one-to-one time and includes recurring sessions, built-in video rooms, invoicing, automated balance chasing, and multilingual customer emails. Because the products use shared data, customer conversations can sit alongside booking details, deposits, histories, and space reservations instead of being scattered across separate systems. SONDU One combines Connect, Schedule Team, and Reserve for businesses that need messaging, appointment management, and space rental tools together. The company charges flat subscription fees rather than commissions and also offers free migration from existing systems, product-specific free trials, and discounts for combining products. Sondu is especially relevant for salons, clinics, therapists, consultants, coworking spaces, studios, and other service businesses that want to simplify operations while retaining control of their customers and software costs.

What is Acuity Scheduling?

Acuity Scheduling simplifies the process of managing and scheduling appointments online. This user-friendly software assists both professionals and businesses in effortlessly keeping their calendars booked. By providing clients with real-time access to your availability, Acuity allows for quick appointment bookings and the option to pay in advance. With its seamless functionality, you can avoid the stress of organizing or rescheduling appointments altogether. This efficiency not only saves time but also enhances the overall client experience.

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Integrations Supported

Constant Contact
DoorLoop
Foyer
Google Workspace
Insightly
Kit
Mailshake
Pabbly Connect
Parsey
Pipedrive
Posh
QPage
Shift
Square Payroll
Square for Retail
Thryv
TrueMail
Unifonic
Valory AI
Wix

Integrations Supported

Constant Contact
DoorLoop
Foyer
Google Workspace
Insightly
Kit
Mailshake
Pabbly Connect
Parsey
Pipedrive
Posh
QPage
Shift
Square Payroll
Square for Retail
Thryv
TrueMail
Unifonic
Valory AI
Wix

API Availability

Has API

API Availability

Has API

Pricing Information

$49/month
Free Version
Free Trial Offered?

Pricing Information

$16.00/month
Emerging - $16 per month
Growing - $27 per month
Powerhouse - $49 per month
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Sondu

Date Founded

2026

Company Location

Spain

Company Website

Sondu.eu

Company Facts

Organization Name

Squarespace

Date Founded

2003

Company Location

United States

Company Website

www.acuityscheduling.com

Categories and Features

Appointment Scheduling

Appointment Reminders
Automated Scheduling
Calendar Sync
Client Database
Group Scheduling
Mobile Access
Multi-Location
Online Booking
Online Payments
Recurring Appointments
Room Booking Management

Salon

Appointment Management
Booth Rental
Client Profiles
Employee Management
Inventory Management
Loyalty Program
Multi-Location
Payroll Management
Point of Sale (POS)
Recurring Appointments

Categories and Features

Appointment Reminder

Appointment Scheduling
Calendar Management
Call Reminders
Email Reminders
Online Booking
Payment Reminders
Recurring Appointments
Rescheduling
SMS Messaging
Two-Way Messaging

Appointment Scheduling

Appointment Reminders
Automated Scheduling
Calendar Sync
Client Database
Group Scheduling
Mobile Access
Multi-Location
Online Booking
Online Payments
Recurring Appointments
Room Booking Management

Barbershop

Appointment Reminders
Appointment Scheduling
Client Profiles
Email Marketing
Employee Management
Inventory Management
Loyalty Program
Payroll Management
Point of Sale (POS)
Wait List Management

Coaching

Appointment Scheduling
Billing & Invoicing
Business Coaching
Client Management
Goal Setting / Tracking
Life Coaching
Mentor/Coach Matching
Program Management
Progress Tracking
Sport Coaching

Dance Studio

Attendance Management
Billing & Invoicing
Class Management
Competition Management
Instructor Management
Inventory Management
Online Payments
Online Registration
Point of Sale (POS)
Recital Management
Scheduling
Student Management

Employee Scheduling

Appointment Management
Automated Scheduling
Calendar Management
Employee Database
Group Scheduling
Messaging
Mobile Access
Payroll Management
Reporting/Analytics
Resource Management
Schedule Distribution
Scheduling
Shift Scheduling
Shift Swapping
Time Clock
Time Tracking
Vacation / Leave Tracking

Event Management

Attendee Management
Badge Management
Conferences / Conventions
Exhibit / Vendor Management
Gamification
Room Block Management
Social Media Promotion
Sponsorship Management
Surveys & Feedback
Ticketing
Volunteer Management
Weddings / Parties

Fitness

Attendance Tracking
Billing & Invoicing
Check-In Manager
Class Management
Contract Management
Employee Management
Event Management
Inventory Management
Marketing Management
Membership Management
Point of Sale (POS)
Reservations Management

Massage Therapy

Appointment Management
Billing & Invoicing
Client Management
Email Marketing
Employee Management
Gift Card Management
Multi-Location
Point of Sale (POS)
Practice Management
SOAP Notes

Medical Spa

Appointment Management
Before & After Pictures
Client Management
Gift Card Management
HIPAA Compliant
Inventory Management
Package Creation

Mental Health

Appointment Reminders
Appointment Scheduling
Assessment & Treatment Plans
Billing & Invoicing
Claims Management
E-Prescribing
EDI
EMR / EHR
HIPAA Compliant
Inpatient / Residential
Multi-Provider Practice
Patient Portal
Personnel Management
Progress Notes
Single Provider Practice

Municipal

Animal Licensing
Code Enforcement
Fund Accounting
Inventory Management
License Issuance
Parking Management
Permit Issuance
Planning & Zoning
Property Database
Taxation & Assessment
Utility Billing
Work Order Management

Patient Scheduling

Analytics/Reporting
Approval Process Control
HIPAA Compliant
Mobile Access
Notifications/Alerts
Online Scheduling
Patient Communications
Patient Intake
Patient Portal
Patient Records Management
Payment Processing
Reminders
SMS Messaging

Personal Trainer

Appointment Scheduling
Assessments
Attendance Tracking
Billing & Invoicing
Certification Tracking
Client Management
Commission Management
Exercise Library
Fitness Assessments
Fitness Plan
Nutrition Program
Online Store
Payment Processing
Wellness Plans
eCommerce

Photography Studio

Appointment Scheduling
Billing & Invoicing
Client Management
Contract Management
Event Management
Marketing Management
Order Management
Project Management
Proposal Management

Physical Therapy

Activity Monitoring
Appointment Management
Assessments
Billing & Invoicing
Exercise Management
Insurance Management
Multi-Location
Patient Records
Practice Management
Progress Notes
Treatment Plans

Pilates Studio

Attendance Tracking
Capacity Management
Class Scheduling
Marketing Management
Member Management
Online Payments
Point of Sale (POS)
Staff Management

Salon

Appointment Management
Booth Rental
Client Profiles
Employee Management
Inventory Management
Loyalty Program
Multi-Location
Payroll Management
Point of Sale (POS)
Recurring Appointments

Scheduling

Alerts/Notifications
Appointment Scheduling
Automated Scheduling
Calendar Management
Class Scheduling
Employee Scheduling
Facility Scheduling
Group Scheduling
Interview Scheduling
Meeting Room Booking
Multi-Location
Online Scheduling
Payment Processing
Real-time Scheduling
Reservations
Resource Scheduling
Room Booking Management

Spa

Appointment Management
Client Management
Employee Management
Inventory Management
Loyalty Program
Membership Management
Online Booking
Payroll & Commission
Point of Sale (POS)

Speech Therapy

Assessment Management
Billing & Invoicing
Care Plan Management
Insurance Management
Patient Scheduling
Progress Tracking
SOAP Notes

Tattoo Studio

Appointment Reminders
Appointment Scheduling
Client Management
Consent Management
Inventory Management
Loyalty Program
Marketing Automation
Multi-Location
Online Booking
Payroll & Commissions
Point of Sale (POS)

Yoga Studio

Class Scheduling
Facility Scheduling
Inventory Management
Member Management
Online Payments
Staff Management

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