React Native iOS & Android apps with voice AI, image recognition and real-time intelligence — one codebase, two platforms, shipped in 4 weeks. Fixed price from ₹75,000.
Fixed-price packages. iOS + Android from one React Native codebase. No hourly billing.
All prices exclude GST. App Store fees separate: Apple ₹8,500/year · Google Play ₹2,100 one-time.
For 95% of apps, React Native delivers identical performance to native Swift or Kotlin — at half the cost and in half the time. Here is the full comparison:
| Factor | React Native — PS Digitise ✓ | Native Swift + Kotlin |
|---|---|---|
| Platforms covered | ✓ iOS + Android both | One platform per codebase |
| MVP delivery time | 4–6 weeks | 12–20 weeks |
| Cost (India) | ₹75,000–₹10,00,000 | ₹5,00,000–₹20,00,000+ |
| OTA updates | ✓ Instant — no store review | ✗ Full store submission |
| Shared codebase | ✓ 85–90% shared | ✗ Two separate codebases |
| AI integration | ✓ Native + TensorFlow Lite | Native only |
| Camera / GPS / Bluetooth | ✓ Full native modules | ✓ Full native |
| Performance (typical apps) | ✓ Identical to native | ✓ Native |
| Maintenance cost | One codebase to maintain | Two codebases — 2× cost |
| Best for | 95% of all business apps | Games, AR, heavy graphics |
We have shipped 50+ apps across consumer, B2B and enterprise. Every app has AI embedded at its core — not bolted on as an afterthought.
B2C shopping apps with AI recommendations, visual search, loyalty programmes and one-tap Razorpay checkout.
iOS + AndroidOffline-capable field apps with GPS tracking, digital forms and real-time sync. Delivery, inspection and maintenance use cases.
Offline-firstHealthKit / Google Fit integration, wearable sync, AI coaching, teleconsultation flows and patient record apps.
HealthKit / FitCourse players with video streaming, adaptive quizzes, certificates and AI-powered personalised learning paths.
Video + AITwo-sided marketplace apps — customer app, driver/provider app, admin dashboard and live GPS tracking.
Two-sidedSales apps, CRM clients, approval workflows and ERPNext companion apps with biometric login and MDM support.
ERPNext / CRMEvery PS Digitise mobile app has AI capabilities built in — not as add-ons but as core features that make your product genuinely superior to competitors.
Every PS Digitise mobile app is built on a production-grade architecture designed for scale, security and maintainability. Here is the exact technical stack we use across all layers.
| Layer | Technology | Why We Use It |
|---|---|---|
| UI Framework | React Native 0.73 + Expo SDK 50 | One codebase → iOS + Android. JSI bridge for near-native performance. Expo managed workflow for faster builds. |
| Language | TypeScript (strict mode) | Type safety catches bugs at compile time. Every component, API call and state slice is fully typed — no runtime surprises. |
| Navigation | React Navigation 6 + Expo Router | File-based routing for maintainable navigation structure. Deep linking configured out of the box for push notification routing. |
| State Management | Zustand + React Query (TanStack) | Zustand for global app state. React Query for server state — handles caching, background refresh and optimistic updates automatically. |
| API Layer | REST API + Axios + Zod validation | Zod validates every API response at runtime — type errors in the backend surface immediately rather than causing silent failures in the UI. |
| Backend (Option A) | Python + FastAPI + PostgreSQL | FastAPI for high-performance async REST endpoints. PostgreSQL for relational data. SQLAlchemy ORM with Alembic migrations. |
| Backend (Option B) | Node.js + Express + MongoDB | Used for real-time apps (chat, live tracking). WebSocket support via Socket.io. MongoDB for flexible document structures. |
| BaaS Option | Firebase (Auth + Firestore + FCM) | For MVPs and simpler apps. Firebase Auth for social login, Firestore for real-time data, FCM for push notifications — zero backend code. |
| Authentication | JWT + Refresh Tokens + Biometric | Access token (15 min expiry) + refresh token (30 days) stored in Keychain (iOS) / Keystore (Android). Biometric unlock via Expo LocalAuthentication. |
| Offline Support | WatermelonDB + NetInfo + Queue | WatermelonDB for local SQLite storage. NetInfo detects connectivity changes. Offline-created records queue automatically and sync when back online. |
| Push Notifications | Expo Notifications + FCM + APNs | Unified API for both platforms. Deep link routing on tap. AI send-time optimisation layer via backend job scheduler. |
| Payments | Razorpay SDK + UPI + Stripe | Razorpay for Indian payments (UPI, cards, netbanking, EMI). Stripe for international. PCI-DSS compliant — no card data stored on device or server. |
| On-Device AI | TensorFlow Lite + ONNX Runtime | ML inference runs directly on device — no internet needed for predictions. Models quantised for mobile (< 5MB). Used for OCR, object detection, voice commands. |
| OTA Updates | Expo EAS Update | JS bundle updates push instantly to all users without App Store review. Rollback support — bad update reverts automatically if crash rate spikes. |
| Monitoring | Sentry + Firebase Crashlytics | Sentry for JavaScript errors with full stack traces and user session replay. Crashlytics for native crashes. Alerts fire to WhatsApp within 60 seconds of a crash. |
| Analytics | Firebase Analytics + Mixpanel | Event tracking from day one. Funnel analysis, retention cohorts and A/B testing configured before launch — not added as an afterthought. |
| CI/CD | Expo EAS Build + GitHub Actions | Every push to main branch triggers a build. TestFlight and Play Store internal testing updated automatically. Production builds require manual approval gate. |
| Testing | Jest + React Native Testing Library + Detox | Unit tests for business logic. Component tests for UI. Detox for end-to-end flows (login → checkout → confirmation) on real device simulators. |
| Hosting | AWS EC2 / GCP Cloud Run / Render | Backend APIs on containerised Docker deployments. Auto-scaling configured. Indian region (Mumbai ap-south-1) for low latency to Indian users. |
Security is implemented at every layer — not added as a checkbox before launch. Here is what we configure as standard on every app.
All data in transit encrypted with TLS 1.3. Sensitive data at rest encrypted using AES-256. Keychain (iOS) and Keystore (Android) for token storage — never AsyncStorage for secrets.
Rate limiting on all endpoints. JWT expiry + refresh token rotation. Certificate pinning for production apps to prevent MITM attacks. OWASP Mobile Top 10 checklist run before every release.
Jailbreak and root detection via react-native-device-info. Screenshot prevention for sensitive screens (banking, medical). Biometric authentication via platform Secure Enclave / TEE.
PCI-DSS compliant via Razorpay and Stripe — no card data ever touches our servers. Payment flows use native SDK tokenisation. 3DS2 authentication enforced for Indian cards per RBI mandate.
iOS Privacy Manifest (required from May 2024) — all API usage declared. App Tracking Transparency (ATT) prompt where applicable. DPDP Act 2023 compliant data handling for Indian user data.
ESLint + Prettier enforced on every commit. TypeScript strict mode — no any types. Pre-commit hooks via Husky. Code review required for all PRs. No dead code or console.log in production builds.
Most agencies list integrations. We show you how they actually work.
| Integration | Method | Technical Implementation |
|---|---|---|
| ERPNext | Frappe REST API | Frappe's built-in REST API with API key/secret auth. Doctype-level CRUD. Real-time sync via Frappe websocket events. Field-level permission mapping from ERPNext roles to mobile app screens. |
| Razorpay | Native SDK | Order created server-side (never client-side). Razorpay Checkout SDK handles payment UI. Webhook on backend verifies signature before order fulfilment. Supports UPI, cards, netbanking, EMI, Pay Later. |
| WhatsApp Business | Meta Cloud API | Backend triggers WhatsApp messages via Meta Cloud API. Template messages for transactional (OTP, order confirmation). Session messages for conversational flows. Webhook receives incoming replies for chatbot processing. |
| Google Maps | Maps SDK + Places API | react-native-maps for map rendering. Places Autocomplete for address input. Distance Matrix API for delivery fee calculation. Directions API for route display. API key restricted to bundle ID to prevent misuse. |
| Biometric / Camera | Native Module | Expo Camera for QR/barcode scanning and photo capture. Expo LocalAuthentication for Face ID / fingerprint. Vision Camera for advanced ML use cases requiring frame processors (live OCR, object detection). |
| Zoho / Salesforce | OAuth 2.0 REST | OAuth 2.0 flow with PKCE for mobile. Token stored in Keychain. Backend proxy for all CRM calls — mobile never calls CRM directly. Field mapping layer translates between app data model and CRM schema. |
"They specialise in highly scalable, secure mobile applications. The AI features they built into our logistics app — offline sync, route optimisation and real-time tracking — are better than what enterprise vendors charge 10× more for. On time, every time."
Free scoping call. Figma prototype in 5 days. Fixed-price quote — no commitment required.
Fixed price · React Native iOS & Android · MVP in 4 weeks · 50+ apps shipped