Sisters In Sweat — Platform rebuild · Booking & payments

Platform rebuild · Booking & payments Live

Rebuilt India's all-women sport community from legacy code to a booking platform people love to use.

Client: Sisters In Sweat
Region: India · 2026
Services: Legacy modernisation, Product engineering, CMS & admin, Payments
Live: www.sistersinsweat.com

www.sistersinsweat.com

The challenge

The old platform worked, but it was leaking trust: phone login with no OTP, cart totals the browser could edit, bookings that could oversell a session, and an 8,500-line admin nobody wanted to touch.

A District-style discovery and booking platform for football, run clubs, yoga, padel, workshops and tournaments — moved off a fragile ASP.NET + DynamoDB stack onto a modern core with its own CRM, a single operations dashboard, WhatsApp built into every step and Razorpay payments.

13,164

members on one platform — 12,520 migrated, 644 new

1,375

bookings confirmed since go-live

1,398

Razorpay payments captured

1,977

WhatsApp OTP logins — no passwords

Integrations

Everything connected. One place to run it.

Payload CMS

A custom CRM and one operations dashboard — members, bookings, payments, attendance and content in a single place.

WhatsApp (WATI)

OTP login, booking confirmations, rescheduling and attendance — on the channel members actually read.

Razorpay

UPI and card payments with verified webhooks and idempotent capture.

Zoho CRM & Zoho Books

Synced automatically in the background, so the team never has to open them to see or manage data.

What we did

Read the legacy before replacing it

An eleven-phase discovery traced every business rule back to the original code, profiled production data, and kept the one great asset — the slot reservation logic — as the spec for the new engine.

No login wall before intent

Browsing is anonymous and instant. Phone-OTP only appears at the moment someone books or buys, so curiosity is never punished with a form.

Bookings that cannot oversell

Atomic, idempotent slot reservation with server-computed pricing, membership discounts and team bookings, settled through Razorpay with verified webhooks.

One dashboard instead of five tools

A custom CRM built on Payload CMS became the team's single operations dashboard — members, bookings, payments, attendance, coupons and content. Invoices and CRM records flow to Zoho Books and Zoho CRM on their own, so nobody has to log in anywhere else.

WhatsApp at every step

Members log in with a WhatsApp OTP, get booking confirmations and reschedule on WhatsApp, and attendance is confirmed there too — 1,500+ automated messages since launch.

www.sistersinsweat.com