Sheet D-02 · Develop
Mobile App Development
An app is a commitment, not a launch event. We design, build, and ship iOS and Android apps from a single React Native codebase — appointment booking apps for hospitals and clinics, patient-facing apps, and delivery and commerce apps for growing businesses across Hyderabad. We handle the full path: product scoping, development, App Store and Play Store submission, and the ongoing release cycle that keeps an app alive and improving after launch.
Sheet D-02 · Contents
1.1 · The Problem
Most Business Apps Die Within a Year of Launch
The graveyard of abandoned business apps is not a design problem — it is an engineering and ownership problem. Apps get built as one-off projects, shipped once, and left to decay as OS updates, store policy changes, and unfixed crashes erode them until users delete what is left.
- 01Native iOS and Android built as two separate codebases, doubling the cost of every feature and guaranteeing the two apps drift out of sync within months
- 02Hospital front desks still handling hundreds of appointment calls a day because the 'booking app' was never integrated with the schedule doctors actually run on
- 03Apps built and tested on flagship phones over office Wi-Fi, then shipped to users on budget Android devices and patchy 4G — where they stutter, time out, and get uninstalled
- 04Play Store and App Store rejections — health data declarations, permission justifications, account-deletion requirements — discovered at submission time instead of being engineered in from the start
- 05No release pipeline after launch: crashes go unmonitored, OS updates silently break features, and the app that cost lakhs to build stops working on new devices with nobody accountable
1.2 · Our Framework
Single-Codebase Product Engineering Framework
We build with React Native because it is the highest-leverage architecture for business apps: one codebase, two platforms, native performance where it matters, and a release velocity that dual native teams cannot match at SMB budgets. Every layer of the framework is designed around how Indian users actually run apps — budget Android devices, variable networks, UPI payments, and WhatsApp-first communication.
Product Scoping & Platform Strategy
We define the core loop the app must win — booking, ordering, tracking, repeat engagement — and make the honest call on whether you need an app at all versus a mobile web experience. The MVP is scoped around the single job that earns installs and retention, not a feature wishlist.
Backend & Integration Architecture
API design, authentication via SMS or WhatsApp OTP, Razorpay and UPI payment flows, and integrations with the systems the app depends on — hospital schedules, inventory, delivery logistics, CRM. Data sync is designed to tolerate connection drops rather than assume perfect networks.
Interface Engineering for Real-World Devices
Performance budgets set against budget Android hardware, not flagship phones: startup time, list scrolling, image loading, and offline states are all tested on the device tier your patients and customers actually own, over the networks they actually use.
Store Compliance & Submission Engineering
App Store review guidelines and Play Store policies — data-safety declarations, health-app requirements, permission rationale, mandatory account deletion — are engineered into the build from the start, so submission is a checklist pass rather than a rejection cycle.
Release & Reliability Pipeline
CI-built binaries, staged rollouts, over-the-air updates for JavaScript-layer fixes, crash and performance monitoring, and a defined OS-version support policy. The pipeline is built so shipping version 2.0 is routine, not a second project.
2.1 · Our Process
From Specification to Store Listing to Version 2.0
| Stage | Phase | Detail |
|---|---|---|
| 01 | Discovery & Product Specification | Deep-dive into the workflow the app serves — patient journeys, order flows, field operations — plus user roles and every integration point. Deliverable: a functional specification with wireframes, data models, and a scoped MVP definition. |
| 02 | UX Design & Interactive Prototype | High-fidelity Figma prototypes you can tap through on a real phone before development begins. Booking flows, payment steps, and empty and error states are all designed and approved up front — the screens you sign off are the screens that ship. |
| 03 | Sprint Development | Two-week sprint cycles with an installable build delivered every sprint via TestFlight and Play internal testing. Your team uses the actual app on actual devices throughout development, not screenshots in a slide deck. |
| 04 | Backend, Integrations & Payments | Parallel build-out of APIs, push notifications, Razorpay and UPI payment flows, WhatsApp notifications, and integrations with your scheduling, inventory, or hospital systems — each with retry logic and failure handling, not happy-path-only wiring. |
| 05 | QA, Device Testing & Store Submission | Testing across a device matrix that includes low-end Android hardware, performance profiling, and security review. We prepare store listings, screenshots, privacy declarations, and compliance documentation, then manage both submissions through review to approval. |
| 06 | Launch, Monitoring & Release Cadence | Staged rollout with crash and performance monitoring from day one. Post-launch, we run a monthly release cadence: fixes shipped over-the-air where possible, features prioritized from real usage analytics, and OS updates absorbed before they break anything. |
3.1 · Technology Stack
Built With Industry-Leading Tools
We leverage proven, scalable technologies to deliver enterprise-grade results.
- React Native
- Expo
- TypeScript
- Node.js
- PostgreSQL
- Firebase
- Supabase
- Razorpay
- OneSignal
- Sentry
- App Store Connect
- Google Play Console
- WhatsApp Business API
4.1 · Expected Outcomes
Measurable Results, Not Promises
Real metrics from real client engagements, demonstrating the impact of our engineering approach.
One Codebase, Both Platforms
Every feature ships to iOS and Android simultaneously from a single React Native codebase — engineered to roughly halve the build and maintenance cost of running two native teams, with no platform ever lagging behind the other.
Engineered for Budget Android and Patchy Networks
Performance budgets, offline handling, and device-matrix testing are set against the phones and networks your users actually have — because an app that only performs on a flagship over Wi-Fi is an app that gets uninstalled in the real world.
Store-Compliant Before First Submission
Data-safety declarations, health-app policy requirements, permission rationale, and account-deletion flows are built during development, not discovered at review — engineered to clear App Store and Play Store review without rejection cycles.
A Release Pipeline, Not a Handover
CI builds, over-the-air updates, crash monitoring, and a monthly release cadence are part of the delivery — designed so the app improves continuously after launch instead of decaying the way most business apps do.
5.1 · FAQ
Mobile App Development Questions
Answers to the questions we hear most from prospective clients.
React Native or native iOS and Android — how should we decide?
For the overwhelming majority of business apps — appointment booking, patient engagement, delivery, commerce, field operations — React Native is the right call: one codebase, both platforms, native-grade UI, and roughly half the ongoing maintenance cost. Fully native development is justified when an app depends on heavy 3D graphics, AR, or deep hardware integration, which almost no business app does. We will tell you plainly in discovery if your requirements genuinely need native; for everything else, paying twice for the same features is the wrong engineering decision.
What does a mobile app cost to build?
Appointment booking and service apps typically range from ₹6,00,000 to ₹15,00,000 depending on integrations — payment gateways, hospital scheduling systems, notification infrastructure. Delivery and commerce apps with logistics, real-time tracking, and multi-role interfaces (customer, rider, admin) sit higher. The single codebase is what makes these numbers viable: the same scope built as separate native apps would cost 70 to 90% more. Budget should also account for the post-launch release retainer, because an app without a maintenance plan is a depreciating asset.
How long does App Store and Play Store approval take — and is it harder for health apps?
With a compliant build, initial review typically takes one to three days on the App Store and a similar window on Play, though first submissions from new developer accounts can take longer. Health-related apps carry extra requirements: data-safety and health declarations, a published privacy policy, clear justification for sensitive permissions, and in-app account deletion. These are exactly the requirements that cause rejection loops when handled at submission time, which is why we engineer them in from the first sprint. We manage both store accounts, submissions, and any reviewer correspondence end to end.
Does our hospital actually need an app, or is a mobile website enough?
For discovery — patients finding you, reading about doctors, making a first booking — a fast mobile website wins, because nobody installs an app for a hospital they have never visited. An app earns its place when there is repeat usage to serve: follow-up appointments, lab reports and prescriptions, chronic-care reminders, or loyalty and repeat ordering for commerce businesses. Our honest recommendation for most hospitals is website-first, app-second — and if your patient volume and repeat-visit patterns do not justify an app yet, we will tell you that in discovery rather than sell you one.
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