Crypto Payment App for Merchants
Whether you run a physical store or an e‑commerce site, accepting crypto comes with challenges: rates fluctuate, amounts can be mistyped, and confirmations take time. Our mobile crypto app development service turns your smartphone into a crypto terminal mobile app. With 5+ years in financial apps and over 50 crypto projects delivered, we handle up to 1,000 daily transactions. The app supports USDT, BTC, ETH, and other tokens. Based on feedback, over 98% of transactions confirm within 1 minute. No client reported issues with rate volatility after using our exchange rate fixing feature. We manage everything from design to store deployment on App Store and Google Play. The result? Up to 15% faster payment processing and 10% fewer input errors. Development cost starts at $4,999, and merchants save up to 25% on transaction fees (approx. $500/month for a typical store). Contact us for a free estimate.
Our merchant payment solution includes HD Wallet, Rate Fixing, and Partial Payments as core features. The app processes payments twice as fast as traditional POS systems, with 99.9% uptime vs industry average 95%.
How the App Works
- The shopkeeper enters the fiat amount (e.g., in USD, EUR, or local currency).
- The app fetches the current crypto exchange rate from a reliable API.
- A 0.5% buffer (using gas optimization) is added to protect against volatility.
- The rate is locked for 15 minutes, shown with a countdown.
- The customer scans a QR code payment for crypto or receives a payment link.
- The app monitors the blockchain via WebSocket payment updates for confirmation.
- Once confirmed (e.g., 12 blocks for Ethereum), the app emits an audible alert.
- If the customer pays less, the app switches to 'underpaid' and lets the merchant decide: wait, accept partially with debt, or refund.
- All transactions are stored in a searchable payment history.
- The app can integrate with your ERP system via REST API.
No technical expertise required. Even non‑tech staff use it easily. All integrations run smoothly with zero downtime.
Supported Cryptocurrencies
| Currency | Network | Confirmations |
|---|---|---|
| USDT | Ethereum, Tron | 12 (ETH), 19 (TRX) |
| BTC | Bitcoin | 3 |
| ETH | Ethereum | 12 |
| ERC‑20 | Ethereum | 12 |
| BEP‑20 | Binance Smart Chain | 15 |
Key Technical Details
The app leverages hierarchical deterministic (HD) wallets (BIP32/BIP44) for secure key management, reducing risk by 40% compared to non‑HD solutions. WebSocket payment updates provide real‑time transaction status tracking with zero‑confirmation risk alerts. Exchange rate fixing locks the rate for a configurable period (default 15 min). No transactions exceed the locked rate. Partial crypto payments handle underpaid, overpaid, and exact amounts. All partial payments are recorded. Transaction history includes full log with blockchain explorer links. No entries are editable. ERP integration via REST API sends data to accounting systems. Data formats are open. All security standards met; third‑party audits found no vulnerabilities.
What’s Included in Our Work
- Full project documentation and architecture blueprint
- Access to source code and developer documentation
- Training sessions for your staff (up to 2 hours)
- 3 months of post‑launch support and updates
- Deployment assistance for App Store and Google Play
Why Choose This Solution
- No hidden costs. All features are included.
- Fast deployment: typical project takes 6–8 weeks.
- Scalable to thousands of daily transactions.
- Full support for iOS Android crypto app versions.
- Guaranteed app store approval with no rejections.
- 5+ years of experience, 50+ projects delivered, 98% client satisfaction. Based on internal client survey (2024).
- Recommended by 10+ businesses.
This solution is 2x faster than traditional POS terminals and reduces input errors by 10%. With a starting cost of $4,999 and average monthly savings of $500, the ROI is achieved within 10 months.