Click Here to Download Live Demo APK

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

WHAT YOU WILL GET

✔ Full Android Studio Kotlin Source Code (Clean MVVM Architecture)
✔ Complete Step-by-Step Responsive HTML Documentation Package
✔ Ready-to-Test Demo APK (Download Demo APK)
✔ 5-Engine AI Provider Setup Guide (NVIDIA NIM, OpenAI, Gemini, Groq, DeepSeek)
✔ Google AdMob Configuration & Approval Walkthrough
✔ Google Play Sensitive Permission Declaration Guide
✔ Complete Graphics & Screenshot Assets

AI Payment SoundBox | Voice Announcement & Merchant Assistant Android App