---
title: SURD - Verified Communities, Neighborhood Circles & Real-Time Discovery
description: SURD (formerly Viby) brings everyday community life and discovery into one unified network. Connect via verified circles, scoped real-time backchannels, self-expiring consensus notice boards, and exclusive perks from favorite nearby businesses.
image: https://surd.me/images/splash-icon.png
canonical: https://surd.me/
app_id: com.harshmalviya7415.viby
play_store: https://play.google.com/store/apps/details?id=com.harshmalviya7415.viby
content-signal: ai-train=yes, search=yes, ai-input=yes
---

# SURD — Where Communities Connect & Businesses Grow

SURD (Android package `com.harshmalviya7415.viby`) is a real-time social networking, community pulse, and local commerce discovery platform tailored for verified academic campuses, corporate communities, and neighborhood circles.

## Quick Download Links
- **Google Play Store**: [Get SURD on Google Play](https://play.google.com/store/apps/details?id=com.harshmalviya7415.viby) (Package: `com.harshmalviya7415.viby`)
- **Direct Android APK**: [Download Android APK](https://surd.me/#download)
- **Apple iOS App Store**: [SURD on Apple App Store (TestFlight & Release)](https://surd.me/#download)
- **Business Portal**: [Partner Business Registration & Deals Dashboard](https://surd.me/business)

---

## Core Capabilities & Features

### 1. Verified Community Circles & AI-Assisted Onboarding
- **Domain-Restricted Trust**: Campus members register with verified institutional emails (e.g. `student@nitk.edu.in`), instantly placing them into their verified campus network.
- **AI Credentials Verification**: Google Gemini AI verifies academic and organization credentials against institutional email patterns to eliminate impersonation and fraud.
- **Safe, Audience-Restricted Playground**: Safe digital environment exclusively for authenticated community members.

### 2. Live Scoped Backchannels
- **Dynamic Real-Time Rooms**: Spontaneous chat channels scoped by audience (e.g. Everyone, Students Only, Employees Only, or specific branches/years).
- **Socket.io + Redis Real-Time State**: Real-time presence counting and message streaming with zero latency.
- **Sub-Community Topics**: Topic-based threads for study groups, campus events, housing, and tech discussions.

### 3. Campus Consensus Notice Board (Alerts Board)
- **Self-Expiring Notices**: Important updates and alerts automatically expire after 12 hours via TTL indexes, keeping feeds clean and timely.
- **Community Consensus Verification**:
  - Community upvotes verify legitimate notices (achieving a verified green badge when Verifications - Reports ≥ 3).
  - Malicious or false alerts reaching 3 reports are immediately removed from feeds, with abusive posting privileges temporarily locked.

### 4. Local Business Deals & Member Perks Engine
- **Exclusive Merchant Discounts**: Neighborhood cafes, bookstores, gyms, and services partner with SURD to offer coupon codes and exclusive discounts.
- **Audience-Targeted Offers**: Merchants can target specific campuses, student batches, or broad local audiences.
- **Redemption & Analytics**: Live tracking of deal claims, coupon redemptions, and customer reach.

---

## Technical Stack & Architecture

- **Mobile Client**: React Native with Expo SDK, Expo Router, SecureStore JWT credential management, and responsive native design.
- **Web Portal**: React 19, Vite, TypeScript, and responsive modern CSS.
- **Backend Infrastructure**: Node.js, Express REST API, Socket.io event engine with Redis Pub/Sub adapter.
- **Databases**: MongoDB (Mongoose) for persistent profiles, posts, backchannels, and notices; Redis for real-time presence, rate-limiting, and vibe aggregates.
- **Edge & Content Delivery**: Markdown for Agents content negotiation (`Accept: text/markdown`), Content Signals (`ai-train=yes, search=yes, ai-input=yes`), and HTTP caching.

---

## Safety, Privacy & Compliance

- **Privacy Policy**: [Read Privacy Policy](https://surd.me/privacy)
- **Terms of Service**: [Read Terms of Service](https://surd.me/terms)
- **Community Guidelines**: [Read Community Guidelines](https://surd.me/community-guidelines)
- **Child Safety Standards**: [Read Child Safety Standards](https://surd.me/child-safety.html)
- **Support & Moderation Contact**: `support@surd.me` or `noreply@surd.me`

---

## Machine-Readable Resources for AI Agents
- Agent Documentation Index: [/llms.txt](https://surd.me/llms.txt)
- Full Documentation Bundle: [/llms-full.txt](https://surd.me/llms-full.txt)
- XML Sitemap: [/sitemap.xml](https://surd.me/sitemap.xml)

```json
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "SoftwareApplication",
      "@id": "https://surd.me/#app",
      "name": "SURD",
      "alternateName": ["Viby", "SURD Social"],
      "operatingSystem": "Android, iOS",
      "applicationCategory": "SocialNetworkingApplication",
      "installUrl": "https://play.google.com/store/apps/details?id=com.harshmalviya7415.viby",
      "downloadUrl": "https://play.google.com/store/apps/details?id=com.harshmalviya7415.viby",
      "offers": {
        "@type": "Offer",
        "price": "0",
        "priceCurrency": "USD"
      },
      "description": "Real-time social networking and notice board application tailored for academic and corporate campus communities with exclusive local deals.",
      "url": "https://surd.me",
      "sameAs": [
        "https://play.google.com/store/apps/details?id=com.harshmalviya7415.viby"
      ]
    },
    {
      "@type": "Organization",
      "@id": "https://surd.me/#organization",
      "name": "SURD",
      "url": "https://surd.me",
      "logo": "https://surd.me/images/splash-icon.png",
      "contactPoint": {
        "@type": "ContactPoint",
        "contactType": "Customer Support",
        "email": "support@surd.me"
      }
    }
  ]
}
```