Stripe × Supabase · AI Payments for the Real Economy · Berlin · 24 Oct 2026

Describe your business. Get booking software that fits it.

A small-business owner writes one paragraph. Fitted turns it into a booking app, whether courts, a bike map or stylists. Customers pay the owner through Stripe Connect, and Supabase makes double bookings impossible.

Narrated two-minute demo (sound on) · 3-minute pitch · describe → generate → publish → change in plain words → book and pay → no double booking

One engine, three businesses

Three booking apps generated by Fitted: a padel club with courts, a spin studio with a bike map, a salon with stylists
RESOURCE

🎾 Padel club

"4 courts, 2 indoor, €32 a match, €40 after 5pm" → court map, 90-minute slots, peak price, indoor +€4.

CLASS

🚴 Spin studio

"18 bikes in 3 rows facing the instructor" → bike map, class schedule, live taken seats.

STAFF

💇 Salon

"Mira does colour, Jonas and Lea do fades" → stylist cards, services limited to the right people.

How it works

AI

A spec, not code

OpenAI structured outputs fill a strict JSON schema; our normalizer checks and repairs it. One tested renderer runs every spec.

STRIPE CONNECT

Paid straight to the owner

Express account per business, Stripe-hosted onboarding, Checkout with a destination charge and a 3% application fee.

SUPABASE

The database is the referee

Postgres stores specs, versions and bookings. An exclusion constraint makes overlapping bookings impossible.

constraint no_overlap exclude using gist (
  business_id  with =,
  resource_key with =,
  tstzrange(starts_at, ends_at) with &&
) where (status <> 'cancelled')
Owner dashboard with Stripe status, AI cost, plain-words changes and version history

How we keep costs low

CostPer business
AI to set up the app (one call, gpt-5-mini, ~2,500 tokens)≈ $0.002
AI per plain-words change≈ $0.002
AI per customer booking$0
Generated code to build, host or deploynone
Infrastructure per extra businessone row

Revenue comes from the Stripe Connect application fee, so owners pay nothing until their customers do.

Team

Paras Adlakha

Aerospace, electronics, systems engineering. Engine, Stripe Connect and Supabase.

Harshita Adlakha

System dynamics, socio-technical systems. Research, product and AI spec design.