About Knöa — Booking SaaS with client reliability score
Booking app that cuts no-shows via WhatsApp + a client reliability score
Knöa is a complete, production-ready booking SaaS for appointment-based service businesses (salons, beauty clinics, physios, practices). Not "just another calendar": it scores each client's reliability, sends WhatsApp reminders, and charges for no-shows.a The differentiator. Most booking tools only remind clients. Knöa calculates a weighted per-client reliability score (a 90-day risk-points system) and flags each person as Reliable / Watch / Risk. The business sees at a glance who's safe to book and who to require a deposit from. No booking app in the Spanish market does this. Status: 100% functional and in production. Ready to connect credentials and operate from day one. What's built: multi-view calendar with drag & drop · client reliability score · WhatsApp reminders (Meta Cloud API, approved templates, confirm/cancel buttons, delivered/read receipts) · public online booking per business · deposit collection via Stripe · multi-tenant with roles and permissions · offline mode (installable PWA) · full GDPR (anonymization, export, audit log) · accountant CSV exports · admin and superadmin panels · transactional and onboarding emails · statistics · per-business branding. Tech stack: Next.js 14, React, TypeScript, Supabase (PostgreSQL + Auth + Storage), Stripe, Resend, Meta WhatsApp Cloud API. Installable PWA with offline mode. Deployed on Vercel. Business model: subscription — Solo €29.99/mo, Team €59.99/mo, 14-day free trial (no card). Full cycle implemented. Current revenue: €0. Pre-revenue, not yet commercialized. Sold as an asset: you're paying for a finished, differentiated product. Included: full documented source code, domains (helloknoa.com + app + sending subdomain), the "Knöa" brand and identity, and all integrations already built (buyer connects their own credentials). Handover: activations, not development. The buyer connects their Stripe live and Meta credentials, fills in the legal details and support email. Orderly handover and transition support included. Why selling: built it to a complete, production-ready state but don't have the time/commercial focus to acquire customers. Looking for someone with reach in this market.
Next step: <p>The hard part — building a complete, working product — is done. The buyer's upside is pure go-to-market: </p><p>- Onboard the first paying businesses (warm outreach to local barbershops, salons, physios in Spain).</p><p>- Activate Stripe live and start charging the existing 14-day trial flow.</p><p>- Scale via Instagram/TikTok content and local SEO.</p><p>- Expand to other Spanish-speaking markets (LatAm) — the product is Spanish-first and ready.</p><p>- Add premium tiers (API access already designed for a custom plan).</p><p>A large, underserved niche with a quantified pain (no-shows cost these businesses ~10-20% of revenue) and almost no Spanish-first competitor doing client reliability scoring.</p>
For sale
Asking price: $6,300 USD
What's included
Domain name, All related design work, Source code, All related data, Email account
Instagram account (@helloknoa), the full WhatsApp Business integration (Meta-approved templates, working), the Stripe integration (subscriptions + deposits), and complete documentation: technical master doc, bug/debt audit, and a launch & handoff guide for a smooth transition.
Reason for selling
I built Knöa to a complete, production-ready state, but I'm focused on other things and don't have the time to give it the commercial push it needs. I'd rather it goes to someone with reach in this market.
Project metrics
Average Monthly Visitors: Pre-launch
Average Monthly Revenue: Pre-revenue
Average Monthly Downloads: Pre-launch / New project
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