Knodor

Society & Estate Management App — Web, iOS & Android

Knodor is a community management platform for residential societies and gated estates, live at knodor.com — the modern way to run your residential society, knock on door. It replaces the scattered WhatsApp groups, paper visitor registers and spreadsheet billing that most societies still rely on with a single premium dashboard where residents, guards, managers and admins all work from the same source of truth. Harsh Kadyan built the backend, the web frontend, and the native iOS and Android apps — one connected system across Web, iOS and Android rather than a web app that pretends to be mobile.

The platform is organised into feature modules that societies switch on as they need them. Visitor & gate security covers QR visitor passes, pre-approvals, delivery logging, vehicle entry and guard photo capture at the gate. Billing & payments handles maintenance bills, invoices, card and mobile-money payments and offline cheque tracking. Notices & community powers a notice board, forum, polls, events, lost & found, documents and house rules. Marketplace & services adds resident buy & sell, amenity booking, service requests and rated daily helpers. Safety & emergency gives residents a one-tap safety ping to on-duty guards with instant alerts, and the society directory ties everything together with a unit directory, messaging and family access. Societies enable only the modules they need — nothing is forced.

Under the hood, Knodor is built around four user roles — Resident, Guard, Manager and Admin — each with role-specific tools on both web and mobile, so a guard at the gate, a resident in their flat and a manager in the office each see the workflow built for them. Multi-society support lets an administrator run several estates from one account with admin analytics, subscriptions and global settings, while a single backend serves all three platforms (Web, iOS, Android). Getting a society live is intentionally simple — the onboarding runs in three steps: onboard the society, enable the features you want, then residents and guards connect — so a community can move off WhatsApp groups and paper registers in an afternoon.

Key features

• Visitor & gate security — QR visitor passes, pre-approvals, delivery logging, vehicle entry and guard photo capture at the gate, so every entry is logged and verifiable.
• Billing & payments — maintenance bills, invoices, card and mobile-money payments and offline cheque tracking, with transparent records residents can audit.
• Notices & community — notice board, forum, polls, events, lost & found, documents and house rules in one place instead of scattered across chat groups.
• Marketplace & services — resident buy & sell, amenity booking, service requests and rated daily helpers, turning the society into a small local network.
• Safety & emergency — one-tap safety ping to on-duty guards, emergency contacts and instant alerts, so help is a single tap away.
• Society directory — unit directory, messaging, family access and a single place for all estate communication across the whole community.

User roles

• Resident — pre-approve visitors, pay bills, use the marketplace, send a safety ping and take part in community life.
• Guard — handle gate check-ins, deliveries, the vehicle log and safety response from a focused mobile workflow.
• Manager — manage residents, billing, notices, complaints and reports, and run day-to-day society operations.
• Admin — run a multi-society platform with analytics, subscriptions and global settings across every estate.

Technology stack

My role

I built Knodor end to end — the backend, the web frontend, and the native iOS and Android apps — as one connected system running off a single backend. That covers the API and data model, the Next.js dashboard, the SwiftUI and Kotlin mobile clients, and the integrations around payments, QR passes and push notifications. More on my background on the about page and the experience page.

About the developer

Knodor is built by Harsh Kadyan — known online as BrutalHarsh — a 22-year-old full stack developer and AI engineer based in Rohtak, Haryana, India. He ships across the whole stack, from Node.js and PostgreSQL backends to React web frontends and native iOS and Android apps, and has delivered 100+ projects alongside products of his own. Read the full story on the about page.