Why React Native over separate native apps?

With two markets (India and USA) and two platforms (iOS and Android), building separate native apps would have quadrupled the engineering cost and created maintenance overhead. React Native with Expo gave us 95% code sharing with true native performance — the right trade-off for this project.

How did you handle performance on low-end Android devices?

We ran performance profiling on a Galaxy A14 (a common mid-range Indian device) throughout development. FlashList for virtualized lists, image placeholders, progressive JPEG loading, and minimal re-renders from proper state management made the difference.

How long did App Store review take?

Initial App Store review took 4 days due to data privacy clarifications around property enquiry data. Play Store was approved in 2 days. We now handle App Store compliance documentation upfront in every project to minimise delays.

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App Development

Case Study · App Development

10,000+ Downloads. One Codebase.

How we built a cross-platform React Native real estate app — from design to App Store — that reached 10K+ downloads with a 4.6-star rating.

Service

App Development

Location

India & USA

Duration

20 weeks

Year

2025

Industry

Real Estate / PropTech

Project Overview

A real estate platform operating in India and the USA needed a mobile-first experience to serve both property seekers and agents. Their existing web app had poor mobile conversion — 68% of traffic was mobile, but 91% of enquiries came from desktop. They needed a native-quality cross-platform app that worked as well on a budget Android phone in India as it did on an iPhone in New York.

Key Insight: Performance is the Best UX

Virtualizing large map clusters and applying aggressive JPEG compression allowed the app to run seamlessly on budget devices. When target markets include varying hardware tiers, visual budget and performance tuning is everything.

The Challenge

The Problem

The core challenge was not just building a mobile app — it was building one that could serve two very different markets simultaneously. Indian users were on low-memory Android devices on 4G networks; US users expected a premium native iOS experience. The app needed to feel fast, native, and reliable for both — with the same codebase.

68% of web traffic was mobile, but mobile conversion was 8x lower than desktop

Property listing data was served via a slow REST API with no pagination strategy

Map integration required real-time polygon boundary data for 50,000+ pin codes

Agent-to-buyer communication needed end-to-end encrypted in-app messaging

App Store and Play Store compliance for data privacy in both jurisdictions

Our Solution

Our Approach

We built with React Native and Expo, choosing cross-platform explicitly to serve both markets without duplicate engineering effort. The architecture prioritized offline capability, progressive loading, and aggressive image optimization for low-bandwidth scenarios.

Performance Architecture

Implemented FlashList for virtualized property listings (10x faster than FlatList), lazy image loading with placeholders, and API response pagination — keeping scroll performance smooth even on 3-year-old Android hardware.

Advanced Maps Integration

Integrated Google Maps with custom overlays for neighborhood boundaries, cluster markers for dense urban areas, and a radius-based search that queries only the visible map viewport — reducing API calls by 85%.

In-App Messaging

Built an encrypted real-time messaging layer using Firebase Realtime Database with encryption for agent-buyer communication — integrated with push notifications so agents never miss a lead.

Offline-First Design

Saved and synced recently viewed listings to local storage so users in low-connectivity areas could still browse their shortlisted properties. Background sync ensured data freshness when connectivity returned.

Execution Timeline

Our Step-by-Step Process

Weeks 1-4

Prototyping & UX Wireframes

Creating cross-platform design system in Figma and building prototype flows.

Weeks 5-12

React Native / Expo Build

Infinite scroll list performance, Google Maps API optimization, and dynamic filtering.

Weeks 13-16

Encrypted Chat Layer

Connecting Firebase Realtime DB, setting up local AsyncStorage caching and notifications.

Weeks 17-20

Store Audits & Launch

Final testing on iOS and Android test environments, listing setup, and stores deployment.

Tech Stack

React Native
Expo
TypeScript
Firebase Realtime DB
Google Maps API
FlashList
Expo Notifications
AsyncStorage
Node.js Backend
AWS S3 + CloudFront

Results

Measurable impact — verified outcomes

10K+

Downloads in 9 months

Across iOS and Android

4.6 ★

Average app store rating

Combined across App Store & Play Store

42%

Organic installs

Through ASO and word of mouth

+140%

Mobile enquiry rate

Versus the previous mobile web experience

Retrospective

Lessons Learned & Refinements

FlashList Replacement

Replacing React Native's default FlatList with Shopify's FlashList eliminated scroll lag on low-end Androids.

Viewport-Limited Queries

Querying only visible map boundaries rather than the entire state database cut bandwidth bills by 85%.

"The app had to work brilliantly on a $150 Android and a $1,200 iPhone. Futurise delivered that. The map performance alone — 50,000 pin codes rendering smoothly — is something I've never seen in another property app."

Priya S.

Product Director, Estate Realty

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