We build high-performance, beautifully crafted mobile applications for iOS and Android — engineered to your exact business requirements and designed to delight every user.
Nothing beats mobile phones as the primary technology touchpoint in today's world. Casterly Crown engineers mobile applications from the ground up — we don't use templates, we don't cut corners, and we don't stop at delivery.
Whether you need a consumer-facing app, an enterprise tool, or an IoT companion, we build for real-world performance, App Store compliance, and long-term maintainability.
Swift and SwiftUI-native apps engineered to pass App Store review first time — with full support for iPhone, iPad, and Apple Watch.
Modern Jetpack Compose apps optimised across the full range of Android devices, screen sizes, and OS versions in Sri Lanka and globally.
From pixel-perfect UI to backend integration and store submission
Platform-native interfaces designed to Apple HIG and Material Design standards — wireframes to polished prototypes before a line of code is written.
Every app is built from scratch to your specification — no boilerplate shortcuts. Clean, documented, scalable code delivered with full source ownership transferred to you.
Seamless connection to your existing systems — REST, GraphQL, Firebase, AWS, or any custom backend. Your app talks to everything it needs to.
Biometric login, OAuth 2.0, JWT, encryption at rest and in transit — enterprise-grade security built in from the architecture phase, not bolted on afterwards.
FCM and APNs integration for real-time alerts, marketing campaigns, and transactional messages — with full analytics on open rates and delivery.
Apps that keep working without a signal — local data sync, conflict resolution, and seamless reconnection when connectivity returns.
One codebase, two stores. Flutter lets us deliver a pixel-perfect, high-performance app on both iOS and Android simultaneously — ideal for faster time-to-market.
We handle the entire submission process for both Apple App Store and Google Play — including compliance, metadata, screenshots, and review follow-up.
We don't just build apps — we solve business problems through mobile. These are the categories where our team delivers the most impact.
Secure mobile banking, digital wallets, loan calculators, and payment gateways built to Central Bank guidelines.
Patient portals, appointment booking, medication reminders, and teleconsultation platforms with HL7 compliance where required.
Delivery tracking, route optimisation, proof of delivery capture, and real-time fleet visibility for on-the-ground teams.
Product catalogues, cart and checkout flows, loyalty programmes, and integrated payment gateways for seamless mobile shopping.
Executive and operational dashboards that bring live business data to decision-makers — anywhere, any device.
Mobile controllers and monitors for IoT hardware — Bluetooth pairing, sensor dashboards, and remote device management.
Offline-capable field survey apps with dynamic forms, GPS tagging, photo capture, and cloud sync — like our own Customer Satisfaction Survey product.
Course delivery, progress tracking, assessments, video streaming, and offline content for learners across Sri Lanka and beyond.
Every project comes with knowledge transfer. We walk your team through architecture decisions, coding standards, and maintenance best practices — so you're never held hostage to a vendor.
Deep dive into your business goals, target users, and technical constraints. We produce a detailed spec document before any design begins.
Clickable prototypes reviewed with your stakeholders — test the user flow before committing to full development. Changes are cheap at this stage.
Two-week agile sprints with working builds delivered after each. You see progress, give feedback, and stay in control throughout.
Tested on real devices across iOS and Android versions — functional, performance, and security testing before any app store submission.
Managed submission to both stores, post-launch monitoring, and a dedicated hypercare window to catch and fix any live issues fast.
You have access to our project board throughout. No black boxes — you see what's done, what's in progress, and what's next at all times.
We architect for speed from day one — lazy loading, optimised state management, and minimal API round trips baked into the foundation.
SOLID principles, clean architecture, automated testing, and CI/CD pipelines — the same standards used by the world's top mobile studios.
We offer retainer maintenance packages — OS updates, feature enhancements, crash monitoring, and a dedicated point of contact long after go-live.
Tools and frameworks we use every day
Tell us what you need. We'll scope it, design it, build it, and launch it — and we'll share every best practice along the way so your team grows with the project.
Discuss your app Explore Automation →