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Mobile App development

Build Apps That
Stay on the Home Screen

The average user deletes an app within 3 days. We build high-performance iOS and Android experiences designed for long-term engagement and seamless utility.

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The Mobile Struggle

Is Your App Just
Another Icon in the Folder?

Most apps fail because they prioritize features over performance and user psychology. We fix that.

Slow Load Times

Users abandon apps that take more than 3 seconds to load. Performance is the silent feature that matters most.

Battery Drain

Poorly optimized code drains the device battery, leading to quick uninstalls and negative reviews.

Complex UX

If a user can't finish their main task in three taps, they'll find another app that lets them.

Crashes & Bugs

One crash in production is enough to lose a customer forever. QA isn't an option; it's a necessity.

No Offline Support

Apps that stop working the moment the signal drops feel unreliable and frustrating to users on the go.

Rejected App Submissions

Failing to meet Apple or Google's strict guidelines can set your launch back by months. We know the rules.

Our Development Prowess

Mobile Solutions

From high-frequency trading apps to lifestyle social platforms, we build for the device in their pocket.

iOS Native Development

Swift and SwiftUI experts building butter-smooth applications for iPhone, iPad, and Apple Watch.

Android Native Experts

Kotlin-first development that follows Material Design principles for a native Android feel across all device sizes.

React Native Cross-Platform

One codebase for both platforms with native UI performance. Ideal for startups looking for fast market entry.

Flutter App Development

Google's UI toolkit for building beautiful, natively compiled applications for mobile, web, and desktop.

Progressive Web Apps (PWA)

Bridging the gap between web and mobile. Fast, reliable, and installable without an app store.

Mobile Backend (MBaaS)

Robust server-side logic, real-time sync, and push notification systems that power your app's core.

Mobile Technology Stack

Cutting-edge tools that power our mobile solutions.

Native iOS

  • Swift
  • SwiftUI
  • Objective-C (Maintenance)
  • Cocoa Touch

Native Android

  • Kotlin
  • Java
  • Jetpack Compose
  • Android Studio

Hybrid Frameworks

  • React Native
  • Flutter / Dart
  • Ionic / Capacitor
  • Expo

Backend & Sync

  • Firebase / Firestore
  • Node.js (custom)
  • AWS Amplify
  • Realm Database

Testing & Analytics

  • App Center / TestFlight
  • Crashlytics
  • Mixpanel / Amplitude
  • Google Analytics

Design Tools

  • Figma / Sketch
  • Adobe XD
  • Zeplin
  • Lottie Animations

User Engagement

  • OneSignal
  • Intercom / Sendbird
  • Branch.io (Deep Links)
  • Braze / Clevertap

Deployment

  • App Store Connect
  • Google Play Console
  • Fastlane / Bitrise
  • TestFlight

Why Trust Constelly for
Mobile Engineering?

We don't just "make apps." We build mobile ecosystems. Our team of senior developers and UX researchers ensure that your app isn't just functional, but addictive.

Pixel-Perfect UI/UX

We obsess over every micro-interaction and animation to ensure a premium feel that matches your brand.

Optimized Core Performance

Our apps are benchmarked for CPU usage, memory consumption, and startup time to ensure zero lag.

Full-Cycle Support

From initial wireframes to navigating the app store approval process, we handle everything.

50+

Apps Launched Successfully

4.8?

Average Store Rating

1M+

User Installs Powered

100%

App Store Approval Rate

Frequently Asked Questions

This depends on your target audience. iOS users generally spend more on apps, while Android has a larger global market share. Often, we recommend a cross-platform approach (React Native or Flutter) to launch on both simultaneously.
An MVP (Minimum Viable Product) can cost anywhere from $15k to $50k. Complexity, features (like AI, payment gateways, or real-time tracking), and design requirements all influence the final price.
A standard app takes roughly 3 to 6 months from discovery to launch. We use an agile methodology, providing you with a testable build every 2 weeks so you can see the progress in real-time.
Cross-platform development allows us to write one codebase that runs on both iOS and Android. This reduces development time and cost while ensuring feature parity between both versions.
Yes, we can implement local data storage and synchronization. This allows users to perform certain tasks offline, which then sync with the server once an internet connection is restored.
Absolutely. Launching the app is just the beginning. We help optimize your metadata, keywords, and screenshots to ensure your app ranks high and converts viewers into installers.
Yes. We offer long-term maintenance packages to ensure your app stays compatible with the latest OS versions, fix any emerging bugs, and add new features based on user feedback.
Yes. We have deep experience integrating payment gateways (Stripe, PayPal), social logins, mapping services (Google Maps), and proprietary business tools via custom APIs.
We start with user personas and wireframes to map out the journey. Only once the flow is perfect do we move to high-fidelity UI design, focusing on accessibility and modern aesthetics.
Simple! Reach out via our contact form for a free consultation. We'll sign an NDA, review your requirements, and provide a tailored proposal to bring your vision to life.

Captivate Users on Mobile

Develop native and cross-platform mobile apps that users love. Deliver seamless performance and intuitive UX on iOS and Android.

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