UPI Box - Payment Alert Sound

Turn your phone into a powerful, zero-rental UPI Soundbox.

UPI Box is an ultra-reliable, privacy-first mobile soundbox application built specifically for shopkeepers, retail merchants, street vendors, and small businesses in India. Get loud, instant voice confirmations every time a customer pays via UPI with zero hardware cost and zero monthly rental fees.

Save money every year by replacing expensive physical hardware soundboxes with the smartphone already in your pocket.

Why Indian Merchants Choose UPI Box:

Instant Voice Alerts (~1s Latency)
Hear payment confirmations the exact second money arrives. Our pre-assembled voice engine produces crisp, studio-grade speech alerts instantly.

100% Offline — No Internet Required for Alerts
No SIM card, no active mobile data, and no Wi-Fi required to announce payments. UPI Box processes notifications and announces payments completely offline.

Never Miss a Sale: Silent Mode Bypass
Keep your phone on Silent or Vibrate without worry. When a payment arrives, UPI Box automatically overrides silent mode and announces the amount at clear volume via the alarm stream.

One Soundbox for All UPI Apps
Stop managing multiple QR speakers. UPI Box provides unified voice announcements for all major payment apps:
- Google Pay (GPay and Google Pay for Business)
- PhonePe and PhonePe Business
- Paytm and Paytm for Business
- BHIM UPI
- Amazon Pay
- Navi UPI
- super.money and other UPI apps

100% Credit vs. Debit Protection

100% Private and Secure
Your privacy is our priority. No transaction data, customer names, or phone numbers ever leave your device. All payment ledgers remain stored locally on your phone.

Smart Call-State Handling
Speaking with a customer or vendor on a phone call? UPI Box queues payment alerts during active calls and announces them smoothly 1.5 seconds after your call finishes.

Background Reliability Wizard
Built-in setup wizard guides you step-by-step through battery optimization exemptions and autostart permissions on Xiaomi (MIUI/HyperOS), Vivo, Oppo, Realme, and Samsung devices to prevent background termination.

Daily Ledger and Instant History Export
Track today's total collections at a glance and export your transaction records anytime as a formatted CSV or summary text report.

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Perfect For:
- Auto Rider, Drivers, Hawkers and
- Kirana and Grocery Stores
- Tea Stalls, Cafes and Food Trucks
- Clothing, Footwear and Retail Outlets
- Pan Shops and Street Vendors
- Salons, Service Centers and Freelancers

Permissions and Privacy Compliance:

UPI Box complies strictly with Google Play Developer Program Policies. We only request essential permissions necessary to provide real-time payment voice announcements:

- Notification Access (BIND_NOTIFICATION_LISTENER_SERVICE):
Used exclusively to read incoming payment confirmation notifications from supported UPI apps (PhonePe, Google Pay, Paytm, BHIM, etc.) to speak the amount aloud. Notification data is processed 100% locally on your phone and is never uploaded to external servers or shared with third parties.

- Foreground Service and Media Playback (FOREGROUND_SERVICE_MEDIA_PLAYBACK):
Ensures the soundbox continues to announce payments reliably without interruption even when your phone screen is locked or you are using other apps.

- Battery Optimization Exemption (REQUEST_IGNORE_BATTERY_OPTIMIZATIONS):
Prevents aggressive OEM battery managers from silently stopping payment alerts during business hours.


No financial credentials, banking passwords, OTPs, or private personal messages are ever read, or transmitted.


FAQs
Q: Do I have to pay any monthly rental?
A: No. UPI Box voice alerts are free. There are zero hardware costs and zero monthly subscriptions.

Q: Does it work without an internet connection?
A: Yes.

Q: Will it announce payments when my phone is muted?
A: Yes. UPI Box uses alarm stream routing with volume boosting so you always hear your alerts even in noisy markets or when your phone is on silent.