Copy Calendesk?

YES · clone-ready

makes

$22.4k/mo

category

SaaS

start from

⑂ jquense/react-big-calendar

founder

@maciejcupial

B2B SaaS helping therapists, psychologists, and service businesses manage bookings, payments, and client relationships. Features: subscription packages, white-label branding, client portals, API-first

THE BUILD PROMPT

one-click on BuildCheap →

Build me a SaaS web app like Calendesk.

Calendesk does: B2B SaaS helping therapists, psychologists, and service businesses manage bookings, payments, and client relationships. Features: subscription packages, white-label branding, client portals, API-first It reportedly makes about $22k/mo, so the core idea clearly has demand — I want a lean version I can run and charge for.

Start from the open-source project jquense/react-big-calendar (https://github.com/jquense/react-big-calendar) — reuse what fits, strip its branding, and build the specifics below on top of it.

Requirements:
- Public booking page with availability, time zones, and confirmation emails.
- Calendar sync and a dashboard of upcoming bookings.
- Buffer times and simple team support.

Also:
- Clean, modern, responsive UI with a thoughtful landing page.
- Email/password auth and a simple paid tier (Stripe test mode) so it's ready to charge.
- A README covering setup, environment variables, and how to deploy.

Ship a working MVP I can run locally first, then help me deploy it.

Copy it into any coding agent — Claude Code, Codex, Cursor, Windsurf — or one-click into BuildCheap (imports the repo so you start from a running app).

“I copied Calendesk’s $22.4k/mo idea with one prompt”

Start from this instead of a blank page

⑂ jquense/react-big-calendar

★ 8,400open-source · saas starting point

Also worth copying in SaaS

1Lookup

$229k/mo

The #1 tool for validating phone, email and IP data in real time. All through one powerful API.

Speel.co

$65.8k/mo

Use AI to generate realistic UGC-style videos and images for ads and socials. Launched in October, went from 0 to 1M ARR in 3 months.

Hack2hire

$44.5k/mo

Offers coding and system design practice for interview preparation.

Questions

Can I really build something like Calendesk?

Yes. Calendesk is a saas product doing ~$22.4k/mo — the core loop is well understood. With the prompt on this page and the open-source repo jquense/react-big-calendar as a base, a coding agent like Claude Code or BuildCheap can get you a working MVP in a weekend.

How much does Calendesk make?

Around $22.4k/mo based on public revenue data. That's the whole point of CopyMRR — you're copying something with proven demand, not guessing.

What repo does this start from?

jquense/react-big-calendar (8,400★). "Clone & ship" imports it straight into BuildCheap so you start from a running app, then adapt it.

Is this affiliated with Calendesk?

No. CopyMRR indexes public revenue data and points you at open-source building blocks. Build your own thing — don't copy their brand or content.

New winners in your inbox, weekly

Get the freshest revenue-making SaaS + the open-source repo to clone each one, before everyone else does.

Join builders copying what already works. Unsubscribe anytime.