ScreenMeld – AI Voicemail & Call Screener

ScreenMeld – AI Voicemail & Call Screener

Stop wasting time on spam, robocalls, and unwanted interruptions. ScreenMeld is a complete, production-ready AI-powered call screening and voicemail platform — built for modern mobile users who want their phone back. Ships with a Flutter mobile app (iOS & Android), NestJS backend API, Laravel + Filament admin panel, and a marketing landing site. Launch your own AI call-screening SaaS from day one.

✨ Key Features

🛡️ AI-Powered Call Screening

• Native Android CallScreeningService (Kotlin) that intercepts unknown callers before they ever reach you

• Real-time spam and robocall identification with community-driven blocklists

• Custom screening rules — block by area code, route VIPs straight through, send strangers to AI

• AI auto-responses that handle callers contextually based on time of day, contact type, and intent

🤖 Smart Voicemail with AI Transcription

• Voicemails transcribed by AI, summarized, and prioritized by intent

• Voicemail audio stored securely via Cloudflare R2 with presigned URLs

• Powered by OpenRouter — use GPT-4o, Claude, Llama, or any LLM in one swap

• Direct OpenAI integration available as a primary or fallback provider

🚫 Spam Detection & Blocklists

• Real-time spam identification with one-tap blocking

• Personal and shared community blocklists

• Do Not Disturb schedules with whitelisting and time-based profiles

📊 Call Analytics & Contact Intelligence

• Beautiful charts (FL Chart) showing screened calls, time saved, top spammers, and trends

• Enriched contact profiles with call history, scoring, and notes

• Protection Score dashboard — at-a-glance view of your call security

🎯 AI Coach & Gamification

• In-app AI advisor that helps users tune their screening preferences

• Answers questions like "Is this number a scam?" or "Best rules for blocking telemarketers"

• Achievements, streaks, and progress tracking to keep users engaged

• Confetti rewards via Lottie animations

🔐 Auth, Notifications & Real-Time

• Email/password, Google Sign-In, Apple Sign-In (with JWKS verification)

• JWT access + refresh tokens, bcrypt hashing, Helmet, CORS, rate limiting

• Firebase Cloud Messaging push notifications for new voicemails, blocked spam, and important calls

• Real-time call events and notifications via Socket.IO WebSocket gateway

• BullMQ + Redis background jobs for transcription, AI processing, and email

• Multi-language support with flutter_localizations + Light & Dark themes

🛠️ Admin Panel (Laravel + Filament)

• Filament 3 admin dashboard — manage users, subscriptions, refunds, feedback, and analytics

• Role-based access control (Spatie permissions)

• Subscription management with Stripe, Apple IAP, and Google Play views

• Web-based installer wizard for non-technical buyers

⚙️ Tech Stack

• Mobile: Flutter 3.2+ (iOS & Android) — Riverpod, GoRouter, Dio, Socket.IO client, native Android Kotlin CallScreeningService

• Backend: NestJS 11 + TypeScript — PostgreSQL (raw pg driver), Redis, BullMQ, Socket.IO, Swagger, Passport JWT

• Admin: PHP 8.2, Laravel 11, Filament 3, Sanctum, Socialite, Spatie Permissions, Kreait Firebase

• AI: OpenRouter (model-agnostic — GPT-4o, Claude, Llama, or self-hosted) + direct OpenAI SDK

• Auth: JWT + Refresh Tokens, Google OAuth, Apple Sign-In (JWKS), OTP via AWS SES

• Payments: Stripe (web) + Apple IAP + Google Play Billing — server-side receipt verification

• Storage: Cloudflare R2 (S3-compatible) for voicemail audio with presigned URLs

• Infra: PM2 + Nginx, Firebase FCM, versioned SQL migrations with rollback support

📦 What's Included

• Flutter Mobile App — iOS & Android, native Android Kotlin call screening module, full source code

• NestJS Backend API — Versioned SQL migrations, Swagger docs at /api/docs

• Laravel + Filament Admin — Full dashboard, web installer wizard

• Marketing Landing Site — Frontend module included

• Environment files — .env.example for every component with all variables documented

• Full README and call screening native setup guide

💎 Subscription Plans (In-App)

• Free: Basic call screening, limited voicemail transcriptions, spam detection

• Pro: Unlimited screening, unlimited AI transcription + summaries, custom rules, analytics, DND schedules, priority AI responses

• Stripe web payments + Apple StoreKit + Google Play Billing — all three wired up with server-side verification

• Free trial logic with automatic conversion, refunds and cancellations via Filament admin

📋 Requirements

• Flutter SDK 3.2+ with Dart; Android Studio for Android builds; Xcode 15+ for iOS

• Node.js 20 LTS+ and npm

• PHP 8.2+ with Composer (for Laravel admin)

• PostgreSQL 14+ and Redis 6+

• Firebase project (Cloud Messaging / FCM)

• OpenRouter or OpenAI API key (AI transcription + screening)

• Cloudflare R2 or AWS S3 (voicemail audio storage)

• AWS SES or SMTP provider (transactional email)

• Stripe account + Apple Developer + Google Play for IAP

• Physical Android device recommended for testing native call screening