AI Payment SoundBox | Voice Announcement Merchant Assistant Android App

Payment SoundBox (formerly AI Payment Alert Box) is an advanced, hardware-free smart voice soundbox, interactive countertop POS merchant terminal, and financial intelligence app for Android. It transforms any smartphone or tablet into a real-time payment speaker, listening to incoming payment alerts from UPI, Bank SMS, Stripe, PayPal, Square, Revolut, Zelle, and global digital wallets without requiring costly proprietary hardware soundboxes.

⚠️ IMPORTANT BUYER NOTICES & REQUIREMENTS

• AI Providers & API Keys (NVIDIA NIM, OpenAI, Gemini, Groq, DeepSeek): The app features AI fallback parsing (powered by Meta LLaMA 3.1 8B via NVIDIA NIM API) and AI voice shift summaries across 5 providers. Buyers must supply their own API keys from their chosen provider. Usage of these third-party AI APIs may incur costs depending on your account tier and vendor pricing.
• Google AdMob Monetization: Built-in AdMob Banner Ads are integrated into the source code, but this is not plug-and-play. Buyers must register their own Google AdMob account, create their own Banner Ad Unit IDs, configure them in strings.xml, and complete Google’s account review and app-ads.txt verification process.
• Android Notification Access: The app relies on Android’s NotificationListenerService to detect incoming transaction alerts. Detailed step-by-step guidance for Google Play Console submission and sensitive permission declaration is provided in the documentation.

⭐ KEY HIGHLIGHTS & FEATURES

• Instant Real-Time Voice SoundBox: Announces received payment amounts instantly aloud using native offline Text-to-Speech (TTS) with custom pitch, speed, and phrase template placeholders ({amount}, {app}, {sender}).
• NVIDIA NIM & 5-Engine Multi-AI Hub: Powered by Meta LLaMA 3.1 8B via NVIDIA NIM API for automatic fallback parsing of non-standard notifications, plus built-in support for Google Gemini 1.5 Flash, OpenAI GPT-4o mini, Groq LLaMA 3.3, and DeepSeek V3.
• Countertop Standee POS Mode: Customer-facing kiosk mode with custom Shop Name, live collection tally ticker, dynamic payment QR code, and screen keep-awake display.
• Payment Celebration Animation: Full-screen animated payment verification card displaying transaction amount, payer name, and gateway branding.
• ️ AI Daily Shift Briefing: One-tap audio digest summarizing total daily revenue, transaction counts, peak hours, and largest ticket.
• ️ Fraud & Duplicate Shield: Automatically flags fake test alerts (`test_txn`) and duplicate notifications received within 60 seconds, sounding an immediate audible security alarm.
• CSV Accounting Ledger: Filter and export complete transaction ledgers into CSV format for bookkeeping, tax compliance, and Excel analysis.
• Global Multi-Currency Support: Works with ₹ (INR), $ (USD), € (EUR), £ (GBP), ¥ (JPY), ₱ (PHP), ₩ (KRW), ฿ (THB), ₫ (VND), R$ (BRL), CHF, AED, SAR, AUD, CAD, SGD, and more.
• Multi-Language TTS: Built-in support for English, Hindi (हिंदी), Marathi (मराठी), Spanish (Español), French (Français), and German.
• Google AdMob Ready: Monetize with built-in dashboard banner ads.
• Offline-First Room Database: All payment records and transaction hashes are stored securely on the local device without requiring external cloud databases.

SUPPORTED PAYMENT & BANKING APPS

• Google Pay (GPay), PhonePe, Paytm, BHIM UPI
• Amazon Pay, WhatsApp Pay, BharatPe, Freecharge
• Stripe, PayPal, Square, Revolut, Zelle, Wise, Cash App
• YONO SBI, HDFC Bank, ICICI iMobile, Axis Bank, PayZapp SMS alerts
• Dynamic Gateway Detection: Auto-registers any custom or regional payment application installed on the device!

TECHNICAL SPECIFICATIONS & STACK

• Language: 100% Kotlin 2.0+
• Architecture: Clean MVVM with Android Jetpack, Coroutines & StateFlow
• Database: Room Database (with SHA-256 deduplication hashing)
• Network: OkHttp 4 / Retrofit for ultra-fast AI inference
• Target SDK: Android 15 (Compile & Target SDK 36)
• Minimum SDK: Android 8.0 Oreo (API 26+) — Covers 96%+ of active Android devices
• IDE: Android Studio Ladybug (2024.2.1) or newer