Fitness and yoga

Class booking for studios

A full class is the normal state. This one keeps the line.

Get it from $149 See it working

$149 one business · $399 unlimited · one payment

Lantern Yoga — Engine 1.41.0 · yoga pack · Full edition

Measured, not estimated

Run the suite yourself the day it arrives.

at the same second

35 / 35

checks passing

200 / s

requests sustained

code reviews

What you are buying instead of

3–6

weeks of work

$6,000+

at a freelance rate

a month, ever

$149

One business

One booking site, for one client. No sign-up flow, no console.

What is in it →

$399

Every business you ever add

One install, the admin console, client sign-up — and no fee per client.

What is in it →

Members, with no password

Open the week.Book a mat.

A member has no password: their own page opens from a link sent to their email.

The week, and the mats left
One class, a pass, or the membership
Pause it up to eight weeks
Their own page from a link
The browser remembers them

The part that makes it a studio

A full classtakes a line.

When a mat comes free the first in line has thirty minutes to take it, then it passes on.

Joining costs nothing
Nothing taken until it is yours
Thirty minutes to take it
Nothing offered after nine at night
In the last hour, everybody at once

The desk, all week

Every class,and how full it is.

One click opens the roster, with a tick each that opens twelve hours before the class.

28 classes, 284 of 440 mats
The roster, ticked at the door
Add somebody at the door
Hand one date to another instructor
Call a date off, with the reason

Instructors, at the door

The roster,in a pocket.

iPhone and Android off one codebase, so a tick at the door is on the desk at once.

The day's classes
Tick the roster
Who is new
Add somebody at the door
Give a free mat to the line

THE CODE

What arrives

The whole repository.Not a zip of a demo.

The repository, as it arrivesOne folder is yours to write in. The rest is the engine.

apps/
webNext.js 16 · the site, the booking flow, the dashboard, the admin console
mobileExpo 57 · the staff app for iPhone and Android
packages/
bookingthe rules engine — pure, no database, no clock, 100% branch coverage
niche-corethe packs: nouns, feature flags, starting rules, fonts, sample business
apiHono routes and the query modules behind them
dbDrizzle schema + 33 numbered SQL migrations
authBetter Auth, the roles, the permissions, the sign-in rate limits
emailtemplates and senders: SMTP, Resend, Postmark
i18nEnglish and Spanish, nine catalogue files each
jobs · links · storage · abuse · sharedthe tick, signed links, uploads, rate limits, start-up checks
ui · cms · billing · analytics · monitoringtokens and components, legal copy, subscriptions, Sentry and PostHog
client/the only folder your project writes in
src/brand.tsname, logo, icon, link preview, languages
pack.tsanything you change about the pack
client.jsoncookie prefix, app scheme, phone app name and icons
i18n/index.tsreplace any sentence the engine ships
legal/index.tsyour client's facts, into the five legal pages
extensions/your own routes and event subscribers
migrations/your own tables, run after the engine's
docs/
compliance/six documents, including the answers to Apple's and Google's privacy forms
engine/public-api.mdwhat stays stable across releases, and what does not
CORE-PATCHES.mdevery engine file your project touched, so the next update merges
UPGRADING.md · CHANGELOG.mdwhat each release needs you to do

Licence to runningFive commands.

$pnpm client:create <slug> --pack barbershop --edition full

A private project from the engine's release branch, with your name on it.

$pnpm dev

Running on your machine in about a minute, with the sample business already in it.

$pnpm verify

Checks, format, lint, types, migrations, doctor and every test. Stops at the first failure.

$pnpm build:web && pnpm --filter web cf:build

A production build, and a Cloudflare Worker from the same source.

$pnpm engine:update engine-v1.3.3

Merges the new release on a branch and prints what changed. Conflicts can only be in files you already recorded.

What it will not do.

Nobody else prints this. We would rather you found out here.

Booking

No group classes or several people in one slot
No waiting list for a full day
No bookings the business approves first
Customers cannot set up a repeating booking themselves

Money

No tax, tips, receipts or invoices
No discounts, promotion codes or gift cards
No memberships or prepaid packages
No card on file, and no no-show fee

Customers

No customer accounts and no “my bookings” page — signed links only
No tags, merging or importing
No referrals, reviews or follow-ups
No marketing email

Reach and platform

No embeddable widget, because framing is blocked outright
No structured data for search engines, and no Reserve with Google
No push notifications on the phone app
No API keys and no OpenAPI description

Every limit, every screen, every message — the specification →

One payment.Then it is yours.

You host it. Nothing phones home. Thirty days to change your mind.

Lite

$149

once · This pack.

One business, one booking site.

Complete source code
One niche pack of your choice
Single-business booking site
Setup guide and documentation
Twelve months of updates

Take Lite — $149

Best for agencies

Full

$399

once · This pack.

Multi-tenant platform with the admin console.

Everything in Lite
Many businesses from one install
Platform admin console
Business self-sign-up
A brand folder per business
Twelve months of updates

Take Full — $399

All packs

$899

once · All nine packs.

Every niche pack, plus new ones for twelve months.

Everything in Full
All nine niche packs
Every new pack for twelve months
Priority support queue

Take All packs — $899

The difference between $149 and $399 is $250, once — and no fee per client, ever.

Same engine

All nine

Yours in five commands.

Get it from $149 Read the specification