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WordPress plugin

KosmicBooking

Class and appointment booking for your own website

KosmicBooking takes bookings for classes, appointments and events, collects payment, sends the reminders and keeps the records, all on the WordPress site you already have.

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Built for

  • CPR & first-aid training
  • Fitness & yoga studios
  • Workshops & courses
  • Lessons & appointments
  • Events with limited seats

At a glance

Everything a class-based business needs, in one plugin

Most booking tools were made for one-to-one appointments. KosmicBooking was made for classes: many people book seats in the same session, each person pays for the seats they take, and nobody gets double-booked. It runs inside WordPress, so your bookings, customers and payments stay on your own site.

Seats, not slots

Several customers book the same class until it is full. The last seat can never be sold twice.

Paid when they book

Cards, Apple Pay and Google Pay through Stripe. The full price, or a deposit with the rest paid online later.

Reminders that send themselves

Branded emails and texts before and after each class, plus birthday greetings and certification renewals.

Customers help themselves

An account where customers see, move, cancel and pay for their own bookings, within your rules.

Your business at a glance

Dashboard, calendar, bookings, customers and reports in one full-screen app inside WordPress.

Fits your website

A booking window on any page, or a Book now button that opens it. Works with the block editor and Elementor.

Moving from Amelia

Bring customers, bookings, payments and instructors across in one import, without emailing anyone.

Your site, your data

Everything lives in your WordPress database. Updates arrive in WP Admin like any other plugin.

For your customers

A booking window that walks people through it

Customers book in five short steps: the class, a date and time, how many seats, their details, and payment. The steps run down the side and tick off as they go, with what was chosen under each, so it is always clear where they are and what they are paying for.

Illustration: a glowing calendar with one day highlighted, a clock, and three seats with one still empty.
Screenshot: the KosmicBooking booking window on a web page. A dark side panel lists the steps, with Service ticked and showing CPR & First Aid. The main pane shows the month of October with available days highlighted, and that day's class times with the instructor and seats left.
The booking window on a page: the month and the day's classes side by side, with the instructor and seats left for each.

Seats held while they pay

A seat is held for a few minutes during checkout and released if the customer walks away.

A name for every seat

Booking for a group? They give the name of each person attending.

Your own questions

Ask anything per service, such as an employer or a certification number, and see the answers on the booking.

Courses and waitlists

Sell a multi-session course as one booking. When a full class frees up, the next person on the waitlist is offered the seat.

Your hours, your rules

Business hours, instructor hours, holidays, how far ahead people can book, and when they can still cancel or reschedule.

No double-booking

When two people go for the last seat at the same moment, one gets it and the other is told straight away.

On your website

On a page, in a pop-up, on a phone

Put the booking window on a page, or add a Book now button anywhere that opens it in a pop-up. Any link on your site can open it too, even straight to one class, so your own buttons and menu items can start a booking.

Screenshot: the booking pop-up open over a website. The side panel shows the steps with BLS Provider chosen; the main pane shows the calendar and times, with a close button in the corner.
The pop-up: the same steps over any page, with a close button. Closing during checkout gives the held seat back.
Screenshot: the booking window on a phone, filling the screen, with a progress bar under the title Date & time and the calendar below.
On a phone it fills the screen, with a progress bar in place of the side panel.

Looks right on any theme

It takes your brand colours and keeps its own look, even on themes that restyle every button.

Fits a laptop screen

Choosing a date and time fits on a typical laptop screen without scrolling.

Works with your page builder

A block, a shortcode, and Elementor widgets. More on the page-builder page.

Keyboard and screen-reader friendly

Focus moves to each new step, every control is labelled, and the pop-up closes with Escape.

Payments

Getting paid, up front or in parts

Payments go straight to your own Stripe account. Take the full price when people book, or a deposit and the rest later. KosmicBooking keeps track of who has paid what and who still owes.

Illustration: a glowing payment card with a checkmark badge and a shield.
Screenshot: the Bookings screen, a searchable list of bookings with one open in a side panel showing its confirmation code, status, customer, class, seats, total, paid and balance due, with buttons to mark attendance, send a reminder or cancel.
Every booking in one list. Open one to see its payments, check people in, send a reminder, refund or cancel.

Cards, Apple Pay and Google Pay

Through Stripe, with a test mode for trying everything before you go live.

Deposits your way

A percentage, or a fixed amount charged per seat or once per booking: $25 a seat makes three seats a $75 deposit.

Balances paid online

Customers pay what is left from their bookings page, and a reminder asks them a few days before the class.

Paid at the desk

Cash, cheques and card-machine payments are recorded on the booking, so the balance is always right.

Refunds from the booking

Refund all or part of a payment in a couple of clicks; the customer gets an email.

Discount codes and packages

Codes with limits and dates, and session packages such as a 5-class pass that customers spend at checkout.

WooCommerce, if you prefer

Bookings can go through your WooCommerce checkout instead.

A guided Stripe setup

A step-by-step guide in the plugin checks your keys and connection.

Keeping customers informed

The reminders send themselves

Confirmations, reminders and follow-ups go out on their own, by email and text message, in your brand and in your words.

Illustration: a glowing envelope with a letter, a chat bubble and a notification bell.
Screenshot: an email preview of a booking confirmation with the business's colours in the header, listing the class, time, instructor, location, seats, attendee names, total, amount paid and balance due, with the matching text message underneath.
Every email carries your logo, colours and contact details. Preview it, and the matching text message, before it ever reaches a customer.
Screenshot: the Automations screen listing messages sent 24 hours before a class, 72 hours before a class while a balance is due, 24 hours after a class, and on the customer's birthday, each with an on/off switch and how many were sent this week.
Switch each automation on or off, choose when it goes out, and see how many it sent this week.

Branded emails

Confirmations, reminders, changes, cancellations, refunds, balances due and waitlist offers.

Text messages

Through Signal House or Twilio, sent only to the countries you allow.

Automations

A reminder before each class, a follow-up after, birthday greetings, and a renewal reminder when someone's certification is about to run out.

Your words

Edit any message, preview it with real booking details, and send yourself a test first.

Customer accounts

Customers look after their own bookings

Customers get an account on your site. They can see what is coming up, move or cancel within your rules, and pay what they owe, without calling you.

Screenshot: a customer's My bookings page listing upcoming classes with their dates and the training centre address, Reschedule and Cancel buttons, and Pay balance buttons on bookings that still owe money.
A customer's bookings, with the balance they can pay online.

Upcoming and past bookings

Each with its date, place and confirmation code.

Reschedule or cancel

Up to the cut-off you set.

Pay the balance

By card, from the same page.

Invitations

Invite any customer to make an account. Customers moved from Amelia keep their logins.

Running the business

Your day, your week, your numbers

A full-screen app inside WordPress for the people running the classes: what is on today, who is booked, who still owes, and how this month compares with the last.

Screenshot: the KosmicBooking dashboard with today's bookings, this week's revenue, upcoming classes and classes that are short of people, today's schedule, and a list of recent bookings.
The dashboard: today's classes, this week's revenue and the classes that still need people.
Screenshot: a month calendar with each day's classes listed by time, name and seats taken, filterable by instructor and service.
Every class on the calendar with the seats taken, by month, week or day, for one instructor or all of them.

Customers & reports

Know every customer, and every number

Illustration: rising bar chart with an upward arrow and a donut chart.
Screenshot: a customer's profile showing contact details, a staff note, totals for bookings, upcoming, attended, no-shows, cancelled, paid and owed, the next and last class, a certification renewal date, and a table of upcoming bookings.
Each customer's whole history: classes taken, what they have paid and still owe, when their certification runs out, and your staff-only notes.
Screenshot: the Reports screen for the last 30 days showing net revenue, bookings made, seats filled and no-shows against the period before, a chart of bookings per day, and tables of the busiest services and each instructor's fill rate.
Revenue, bookings, seats filled and no-shows against the period before, with your busiest services and how full each instructor's classes are.

Set up your way

Built around how you already work

Services, staff, schedules and rules are set up once, in plain screens, and everyone on your team sees only what they need.

Screenshot: the Settings screen with cards for General, Company and Brand, Message templates, Payments, Labels, Booking rules, Text messages, and other settings.
Every setting in one place, each with a short description of what it changes.

Classes, appointments and events

Price per seat, seats per class, length, buffers, deposit, location and an intake form for each.

Staff and schedules

Each instructor's hours, days off and the services they teach.

Roles

Managers and instructors get their own logins and see only what they need.

Google Calendar and iCal

Instructors' classes appear in their own calendars.

Locations

Each class says where it happens, in every email.

Labels

Reword any text customers see, without touching code.

Your page builder

Place it with the tools you already use

However your site is built, adding booking is a matter of dropping it where you want it.

Illustration: a browser window and a phone showing a booking layout, with a cursor choosing a time.
Screenshot: the Elementor editor with the KosmicBooking Booking Form widget selected, its settings for service, display and button text in the left panel, and the booking window shown live on the page.
In Elementor's editor the booking form is a V4 widget with its own settings, styled like any other element and live as you design.

Elementor V4 widgets

Booking Form, My Bookings, Customer Account, Create Account and Sign In, each taking Elementor's styles.

Block editor and shortcode

A KosmicBooking block, or [kosmicbooking] anywhere shortcodes work.

Book now buttons

Show the form on the page, as a button that opens a pop-up, or only from your own links.

Your colours

Set your brand colours once and the booking window, emails and sign-in page all use them.

Switching over

Moving from Amelia without starting over

Install KosmicBooking on the same site and bring everything across in one import. It shows you what will come over before anything moves, and nobody is emailed.

Illustration: customer cards travelling along a glowing arc from a dim box to a bright one.

What comes across

  • Customers, with their logins and notes
  • Every booking, past and upcoming, with what was paid and what is still owed
  • Payment history
  • Instructors with their hours and days off
  • Services, events, discount codes, packages and deposit settings

How the switch goes

  • Seats already sold stay taken, so no class is oversold
  • Run it again on the day you switch to pick up anything booked since
  • Move your users from Amelia's roles to KosmicBooking's, with undo
  • Then switch Amelia off

Your site, your data

Peace of mind

Your data stays with you

Bookings, customers and payments live in your own WordPress database, not someone else's platform.

Kept if you reinstall

Deleting the plugin keeps your data unless you choose to erase it.

Card details never touch your site

Stripe handles them; your site only learns that a payment succeeded.

Updates in WP Admin

New versions arrive like any other plugin, with notes on what changed.

Every customer-facing word

Can be reworded with Labels, so the booking speaks your language.

People behind it

You work directly with the team that builds KosmicBooking, not a call centre.

Requirements

What you need

WordPress 6.4 or later

With PHP 8.1 or later. Running it from Constellation needs WordPress 6.9.

HTTPS and Stripe

A secure site and a Stripe account for live card payments. Test mode works without either going live.

Optional extras

Signal House or Twilio for texts, Elementor for page building, WooCommerce for its checkout.

Setup

Getting started

  1. Install and add your brand

    Your business name, logo, colours and contact details.

  2. Connect Stripe

    The built-in guide walks you through test keys, then live ones.

  3. Add services and staff

    Your classes, instructors and their hours.

  4. Put booking on your site

    A page, a pop-up button, or your page builder.

  5. Turn on reminders

    Pick the automations you want, and optionally connect text messages.

  6. Take bookings

    And watch them arrive on the dashboard.

Let's get your classes booking

KosmicBooking is made and supported by Kosmic Edge Marketing in Easton, Pennsylvania. Talk to the people who build it about setting it up on your site, or moving over from the system you use today.

Talk to us
Kosmic Edge Marketing 216 5th St
Easton, PA 18042
(484) 867‑8419
[email protected]

kosmicedge.com

Screens shown use demonstration data. Features described are those of KosmicBooking as of October 2026.