App Development

Professional App Development Services
Built for Business Growth

We develop custom mobile applications for Android, iOS, and cross-platform environments that are fast, secure, and scalable. From business apps and eCommerce solutions to enterprise software and on-demand applications, our app development services deliver exceptional user experiences, seamless performance, and long-term business value.

iOS & AndroidCross-platform appsApp Store optimizationWeb & companion apps
130+
Apps Shipped
4.7
Avg. Store Rating
2.1×
Avg. Install Growth
6+ Yrs
App Development Experience
Our Process

How we build step by step

A structured process ensures nothing gets missed, from initial discovery to a fully optimized app launch.

  1. 01 Discover

    Discovery & Requirements Mapping

    User journeys, platform choice (iOS, Android, or cross-platform), integrations, and technical requirements mapped out before a single screen is built.

  2. 02 Architect

    App Architecture & Store Strategy

    Data models, API design, offline handling, and an App Store / Play Store optimization plan decided up front, so the app is fast, discoverable, and easy to extend.

  3. 03 Build

    App Development & QA

    Native and cross-platform screens built with modern patterns, tested across real devices, OS versions, and network conditions before it ever reaches the store.

  4. 04 Launch

    Launch & Optimization

    App size audits, crash-free rate checks, analytics setup, store listing optimization, and submission. Plus 30-day post-launch support for refinements.

What's Included

Every app development service we offer

Mobile apps, web apps, or component libraries, we cover the entire app ecosystem, not just the parts that are easy to template.

Custom Mobile App Development

Native iOS and Android apps, or a single cross-platform codebase, built for speed, offline reliability, and the polish users expect from a top-rated app.

  • iOS
  • Android
  • Cross-Platform

Web App Development

Full-stack web applications with authentication, real-time data, and complex state management, built for dashboards, portals, and SaaS products.

  • Web Apps
  • Dashboards
  • Real-Time Data

Cross-Platform App Development

iOS and Android apps sharing a single codebase with your web app, cutting development time and maintenance cost without sacrificing native feel.

  • React Native
  • Flutter
  • Shared Codebase

E-Commerce App Development

Shopping apps connected to Shopify, commercetools, or a custom backend, with fast checkout flows built for conversion, not just for the store review.

  • E-Commerce
  • Checkout Flows
  • APIs

App UI Component Libraries & Design Systems

Reusable, documented component libraries so your product team ships consistent screens faster across every new feature and platform.

  • Design Systems
  • Component Libraries
  • UI Kits

Legacy App Modernization

Migrating outdated native or hybrid apps to a modern stack incrementally or as a full rebuild, without disrupting the business that depends on them.

  • Migration
  • Refactoring
  • Modernization

App Performance & Store Optimization

Startup time tuning, crash monitoring, and App Store / Play Store listing optimization (ASO) that fix the sluggish, low-ranking apps template agencies leave behind.

  • ASO
  • Performance
  • Crash Monitoring

Ongoing App Development & Support

Continuous feature development, OS compatibility updates, and bug fixes, so your app keeps evolving long after v1 hits the store.

  • Monitoring
  • Feature Builds
  • Support
What You Get

Every deliverable included

  1. Production-Ready Codebase

    Clean, typed, documented app code handed off through your Git provider of choice, ready for your team to extend.

  2. Fully Tested Build

    Every screen tested and refined across real iOS and Android devices, screen sizes, and OS versions, not just a simulator preview.

  3. Store-Ready Submission

    App Store and Play Store listings prepared and optimized (ASO) so your app is discoverable the moment it goes live.

  4. Performance & Stability Report

    A before-and-after report covering load speed, crash-free sessions, and battery impact, benchmarked against store standards.

  5. Component Documentation

    A documented UI component library so your team can reuse and extend screens without guesswork.

  6. 30-Day Support Window

    Post-launch support for bug fixes, screen tweaks, and technical questions at no extra cost.

Selected Work

Apps we've shipped

A cross-section of app work, from mobile shopping apps to web dashboards and field-ops tools.

SaaS Companion App

Custom Cross-Platform Companion App

Full iOS and Android rebuild for a B2B SaaS company. App Store rating went from 3.1 to 4.8 and monthly active users grew 2.3× in six months.

  • iOS
  • Android
  • App Store Optimization
LeadPro

Lead Management Web App

Custom-built web app dashboard replacing a spreadsheet workflow for a sales team of 40. Cut report generation time from hours to minutes.

  • Web App
  • Dashboards
  • APIs
E-Commerce Fashion & Lifestyle

Meridian Boutique Shopping App

Native shopping app for a DTC fashion brand. App load time dropped from 4.8s to 1.2s and checkout completion rose 19%.

  • E-Commerce
  • Checkout Flow
  • CRO
Logistics & Fleet Management

RouteWise Fleet Tracker App

Real-time fleet tracking app with live map updates and driver check-ins. Cut dispatch response time by 45%.

  • Real-Time Data
  • APIs
  • Cross-Platform
Legacy Modernization

Harbor Freight Ops App Rebuild

Rebuilt a decade-old hybrid operations app on a modern stack with zero downtime during the transition. App load time dropped 78%.

  • Migration
  • Modernization
  • Field Ops
Consumer Mobile

Roastworks Coffee App

Cross-platform app sharing a codebase with the existing web storefront, subscription reordering, and local delivery zones. Repeat purchase rate rose 27%.

  • Subscriptions
  • Cross-Platform
  • Loyalty
Client Voices

What it's like to work with us

We measure success in load times and store ratings, not just how a screen looks. Here's what a few clients had to say.

Our old app took nine seconds to launch on mobile because nobody had touched performance in years. The rebuild came in under two, and our App Store rating climbed within weeks.
Ananya Kapoor
Head of Product, WooCommerce
They handed off a codebase our own engineers actually enjoyed working in, with screens that made every new feature faster to ship on both platforms.
Rohan Mehta
Founder, Meridian Boutique
Migrating our legacy operations app felt daunting, but the transition was seamless and crash reports dropped almost overnight.
Daniel Cruz
Operations Lead, Harbor Freight
Transparent Pricing

Simple, honest pricing

No hidden fees, no surprises. Choose a package that fits your scope or talk to us for a custom quote.

Starter

₹ 2Lonwards

Perfect for a focused MVP app or single-platform launch that needs speed and store visibility out of the gate.

  • Up to 6 screens
  • Single platform (iOS or Android)
  • Basic App Store optimization
  • Unlimited revisions
  • Basic backend integration
  • Store submission handled for you
  • 1 year free support
  • Cross-platform build
  • Component library
  • Real-time data features
Get Started

Enterprise

Custom

For mobile + web app pairs, legacy migrations, design systems, or teams needing an embedded development team on retainer.

  • Unlimited screens
  • Mobile + companion web app
  • Legacy application migration
  • Unlimited revisions
  • API & third-party integrations
  • Advanced performance tuning
  • Full App Store & Play Store optimization
  • 1 year free priority support
  • Dedicated development lead
  • Monthly retainer available
Talk to Us
FAQ

Common questions

Anything else on your mind? Drop us a message at info@sitefiy.com

Native (Swift/Kotlin) gives you the deepest access to platform features and the best possible performance, which matters for camera-heavy, AR, or hardware-intensive apps. Cross-platform (React Native, Flutter) shares one codebase across iOS and Android, which cuts cost and time-to-market for most consumer and business apps. We'll recommend the right approach during discovery based on your feature list and budget.

A web app works everywhere with no download and is easier to update, which suits internal tools, dashboards, and content-heavy products. A native or cross-platform app suits products that need push notifications, offline access, camera/GPS integration, or a presence in the App Store and Play Store for discoverability. We can also build both from a shared backend.

A focused MVP app typically takes 8–12 weeks; a full-featured consumer or business app usually takes 14–24 weeks depending on scope and platform count. We share a detailed timeline in our proposal before development begins.

We treat store listings as part of the build, not an afterthought: keyword-optimized titles and descriptions, screenshots and preview videos designed for conversion, and a review-prompt strategy to build ratings early. This App Store Optimization (ASO) work is included in every launch.

Yes. We migrate legacy native or hybrid apps to a modern cross-platform or native stack, either incrementally alongside the existing app or as a full rebuild, with a plan designed to avoid downtime for the business relying on it.

Yes. Sharing business logic and, often, UI components between your web app and iOS/Android apps cuts development time and keeps every platform in sync as features ship.

Yes. Upon receipt of final payment, full IP and the complete codebase transfer to you through your own Git repository, and the app is published under your own Apple Developer and Google Play accounts, no vendor lock-in.

We offer optional retainers for continued feature development, OS compatibility updates, and bug fixes after launch. It's entirely opt-in, not bundled by default.
Ready to Begin

Let's build an app
that actually performs

Tell us about your project and we'll get back within 24 hours with a tailored app development proposal, no commitment required.