SnapCalendar.io's answer:
A clean, intuitive interface that simplifies scheduling and management tasks.
To-Do Calendar Planner - To-Do Calendar Planner app comes up with a scrollable calendar to enable users to accomplish all your study and other daily life tasks while saving some extra time for other activities.
Appointment Reminder - Automated SMS/Voice and Email Reminders.
Bright To-Do - Bright To-Do app helps users in achieving their life goals by simply creating checklists to keep a check and balance on their daily routine.
Reservio - Reservio is a simple online booking and appointment scheduling application.
Focus To-Do - Be focused and make things easier.
Square Appointments - Add an online booking link. Easily embed the customizable widget directly on your website. Any changes to your online scheduling, prices, or services update automatically.