Koalendar is a great scheduling and appointment app for anyone who works with an electronic calendar. Koalendar works for Google Calendar, Microsoft Outlook, Apple Calendar, and more. All you need is your email address and the rest will be taken care of.

Koalendar is a free app. You can access it from your desktop browser or Android mobile.

You can search for a specific client, and you can create an appointment for yourself or another person.

In Koalendar, your clients will see the most up-to-date availability for you. You can make changes to the availability of your clients and send a notification when it changes.

You can create a client and specify the appointment type. You can create a custom booking page for each client and send them an email reminder so they don't forget the appointment.

You can choose a time slot to book and add notes. You can make the booking page public so your clients can see it in their calendar.