Custom mobile apps, built to grow your business
We craft custom mobile apps that act as a growth engine for your business — native-like across iOS and Android, engineered for real-world stress, not just the simulator.
Industries we serve
Offline-capable driver and warehouse apps with reliable sync for remote areas.
Patient engagement and clinical staff mobile tools built for HIPAA-aware environments.
Shopping apps and in-store staff tools optimised for mobile conversion.
Mobile-first employee self-service, scheduling, and communication tools.
Secure mobile wallets and banking apps with biometric login and in-app payments.
Streaming and content apps built for smooth playback, offline downloads, and engagement.
Booking, itinerary, and check-in apps that stay useful even with patchy connectivity abroad.
Real-time booking, dispatch, and live-tracking apps for delivery and gig-economy platforms.
Why mobile projects miss the mark
Most mobile apps fail before they fail publicly — the codebase grows, performance degrades, and the team starts working around problems instead of through them.
Apps that feel sluggish on mid-range devices, drain battery, or produce ANR errors lose users in the first session — and rarely get a second chance.
Maintaining separate iOS and Android codebases doubles engineering cost, creates inconsistent experiences, and slows every release cycle across both stores.
Missed guidelines, broken permission flows, or accessibility failures cost weeks of rework. Most teams discover these issues only at submission time.
Turning requirements into shipping apps
Mobile engineering services that cover every layer — from architecture and UI to native integrations, app store submission, and post-launch monitoring.
One codebase. Two platforms. Zero compromise.
Highly optimised apps that perform brilliantly across platforms — one React Native or Flutter codebase shipped to both iOS and Android.
- Cross-Platform Architecture — Shared business logic and UI across iOS and Android, with platform-specific adaptations only where they genuinely matter.
- Expo & EAS Build — Managed and bare Expo workflows with EAS Build for cloud compilation, OTA updates, and streamlined app store submissions.
- State Management — Bloc, Riverpod, and Provider patterns matched to your app's complexity — predictable, testable, and easy to debug.
What we solve
Mobile apps across every market and use case
From consumer-facing products to field-force tools, we deliver apps that hold up under real usage — not just demo conditions.
TALK TO AN EXPERTHigh-retention consumer apps with onboarding flows, push engagement, social features, and analytics — shipped to both stores simultaneously.
Internal tools for field teams, warehouse workers, and remote staff — with offline-first architecture and enterprise SSO built in from the start.
Mobile shopping experiences with cart, checkout, payment gateway integration, and loyalty features that convert at the point of intent.
Chat, live tracking, collaboration, and live-data apps built with WebSocket and push architectures that stay in sync without polling.
Collaboration models
Engage us the way that fits your roadmap
Whether you need a complete app delivered to both stores or extra mobile engineers on an in-flight release, we shape the engagement around your timeline and team.
Discovery & Scoping
A short, fixed-fee engagement to define screens, architecture, and a costed release plan before you commit to a build.
Project Outsourcing
Delegate the full app build to us and stay focused on your core operations — we own everything from strategy through store launch.
Dedicated App Developers
A specialised mobile team working exclusively on your project, giving you enhanced control, transparency, and the freedom to scale.
Team Augmentation
Experienced mobile experts who complement your in-house team, scaling your resources without the hiring overhead.
Your users are on mobile. Is your app ready?
We build apps users rate 4.8/5 — because the decisions made in week 1 determine that.
Talk to a mobile engineerHow we deliver
We build the architecture, then the app
Most apps fail before they fail publicly. We get the foundation right first — so yours holds up under real usage, not just the demo.
Architect
We design for real-world stress — unreliable networks, background limits, and scale — before a single screen is built.
Build
High-performance React Native or Flutter on a single codebase, with native bridges where deep hardware access is needed.
Harden
Offline-first storage, intelligent sync, and 60 FPS performance tuning so the app holds up anywhere.
Test
Profiling and QA across a real device matrix — iOS and Android versions — not just the simulator.
Release
Automated CI/CD with App Store and Play Store compliance, so production releases ship risk-free.
How we build
Engineering principles behind every app
Architecting for the extreme: a great app performs under load, works offline, and ships updates without drama — long after launch day.
Offline-First Design
Local storage, sync queues, and conflict resolution built from day one — so the app works without connectivity and reconciles cleanly on reconnect.
Performance Profiling
Frame-rate audits, memory leak detection, and startup-time optimisation on real devices — not just the simulator — before every release.
Release Automation
Fastlane, EAS, and GitHub Actions pipelines for automated builds, signing, and staged rollouts to both stores on every production branch merge.
Our Technology Stack
Powered by industry-leading mobile technologies
We choose the right framework for your product — React Native, Flutter, or native — and back it with proven cloud and backend infrastructure.
React Native
Flutter
Android
Expo
Firebase
Node.js
FastAPI
MongoDB
PostgreSQL
AWS
Google Cloud
Docker
GitHub ActionsCase studies
Mobile apps we have shipped
APPISTOKI
Cross-Platform Mobile Commerce & App Marketplace. ATS developed a React Native application marketplace with cross-platform components, Firebase-powered push notifications, and Spring Boot backend services managing catalogue, transactions, and user accounts.
Read case study
Travel TechnologyBizGlobe Travel Tech
Unified Multi-Service Travel Booking Platform (Web + Mobile). ATS developed a comprehensive travel platform with Spring Boot microservices powering each travel vertical (Flights, Hotels, Trains, Visa, Insurance, Cab, Cruise) via well-defined REST APIs.
Read case study
Emergency Healthcare / Public SafetyResqRoute — Emergency Ambulance Platform
Real-Time Ambulance Dispatch & Route Optimisation Platform (Web + App). ATS designed and built ResqRoute — a real-time emergency response platform built on FastAPI for high-throughput backend services, React.js for the web-based dispatch centre dashboard, and Flutter for the cross-platform paramedic and patient mobile applications.
Read case study
Travel TechnologyBizGlobe Travel Tech
Cross-Platform Travel Super-App — Flights, Hotels, Trains, Buses, Cabs, Visa & Insurance. ATS developed a React Native mobile application covering 9 travel verticals (Flights, Hotels, Trains, Bus, Cab, Cruise, Visa, Insurance, Sightseeing) sharing a common Spring Boot API backend.
Read case study
Emergency Healthcare / Public SafetyResqRoute — Emergency Ambulance Response
Real-Time Ambulance Tracking & Dispatch App — Life-Critical Emergency Response Platform. ATS built ResqRoute — a life-critical emergency response ecosystem consisting of three interconnected applications: a Flutter patient app (SOS, live ambulance tracking, ETA countdown), a Flutter paramedic app (job acceptance, navigation, patient details, status updates), and a React.js web-based dispatch centre dashboard.
Read case study
On-Demand Delivery / Quick CommerceZomee — Hyperlocal Delivery Platform
Hyperlocal On-Demand Delivery Super-App with 10-Minute Delivery Promise. ATS built Zomee using Flutter for cross-platform mobile development, delivering native-smooth animations and interactions on both iOS and Android from a single Dart codebase.
Read case study
From the blog
All articlesFAQs
Common questions about mobile development
Flutter or React Native, which do you recommend?+
Flutter for performance-critical apps with complex animations or custom UI. React Native when code-sharing with a web team matters. We have shipped both in production and recommend based on your specific requirements.
How long does a mobile app take to build?+
An MVP with core flows typically takes 10-16 weeks. A full-featured consumer app runs 20-30 weeks. We scope carefully before committing to any timeline or budget.
How do you handle App Store and Play Store submissions?+
We manage the entire submission process including provisioning profiles, signing certificates, compliance review, and resubmission if Apple or Google requests changes.
Can you build offline-first apps?+
Yes. We use SQLite or Hive for local storage, sync queues for conflict resolution, and optimistic UI updates so the app feels responsive even with no network signal.
What does post-launch support look like?+
We offer maintenance retainers covering OS compatibility updates, bug fixes, and minor feature additions. Critical bugs are patched within 48 hours under our standard SLA.
Let’s work together
Let’s build your mobile app together.
Tell us about your app idea and your target platforms. We respond within one business day and can provide a customised quote for your requirements.