Native iOS & Android Development
Swift and Kotlin apps engineered for each platform's design language, hardware features, and performance profile. Native is our recommendation when you need ARKit, advanced camera work, or 60fps animation-heavy UX.
Mobile App
Mobile App Development
Native-quality mobile apps for iOS and Android.
We build mobile applications with intuitive UX, offline support, push notifications, and seamless backend integration — from concept to App Store launch.
Our Offerings
Mobile App Development Services We Provide
Cross-Platform Development
Flutter and React Native apps that ship to both stores from one codebase, cutting cost and time-to-market by 30-40%. We share up to 90% of code while keeping platform-specific polish where users notice it.
UI/UX Design for Mobile
Research-driven design following Apple Human Interface Guidelines and Material Design 3, validated with clickable Figma prototypes before a line of code is written. Prototype-first design cuts mid-project rework by roughly a third.
Mobile Backend & APIs
Scalable backends on Node.js, Firebase, and AWS with authentication, push notifications, offline sync, and real-time data. Built to scale from your first 100 users to your first million without re-architecture.
App Modernization & Rescue
We take over stalled or legacy apps, audit the codebase, fix crash rates, and migrate outdated SDKs to current OS versions. Typical rescues bring crash-free sessions above 99.5% within two release cycles.
App Store Optimization & Launch
Store listing copy, screenshots, review-guideline compliance checks, and phased rollouts for both Apple App Store and Google Play. We have shipped 20+ apps through review with a first-pass approval rate above 90%.
What We Deliver
End-to-End Mobile App Development
- iOS & Android builds
- Cross-platform options
- Push notifications
- Offline mode
- In-app payments
- App Store submission
Why Choose Devlex
Business Outcomes That Matter
✓Reach customers on mobile
✓Higher engagement
✓Brand presence on home screen
✓Real-time user insights
Technologies
Tools & Stack We Use
We pick the right technology for your goals — not the trendiest framework.
- Flutter
- React Native
- Swift
- Kotlin
- Firebase
- AWS
Our Approach
- Discover — Understand goals & constraints
- Design — Architecture & UX blueprint
- Build — Agile sprints with weekly demos
- Launch — Deploy, test & support
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“Our e-commerce replatform to a headless architecture was delivered GDPR-ready and PCI DSS compliant on the first audit pass. Page load times dropped 60% and conversion rose 18% in the first quarter after launch.”
“Devlex migrated our entire fintech backend to AWS with zero downtime over a single weekend. Infrastructure costs came down 35% and their DevOps team now runs our 24/7 monitoring under a clean SLA.”
“They took over a half-finished React Native app another agency had abandoned, stabilized it in six weeks, and shipped the features our investors were waiting on. The code audit they delivered in week one was worth the engagement on its own.”
FAQ
Mobile App Development — FAQs
Everything you need to know before starting your project. Still have questions? Talk to our team.
Consumer apps, on-demand and delivery platforms, fintech and healthcare apps, IoT companion apps, and enterprise field tools — both native (Swift/Kotlin) and cross-platform (Flutter/React Native). Over 5+ years we have delivered apps in 5+ countries across regulated and consumer markets.
An MVP takes 3-4 months; a full-featured app with backend, payments, and admin panel takes 4-6 months. Complex platforms like on-demand marketplaces with multiple user roles run 6-9 months.
Most apps fall between $10,000 and $50,000 — a simple MVP starts around $10,000-$20,000, mid-complexity apps run $25,000-$50,000, and enterprise-grade platforms exceed $75,000. Cross-platform builds save 30-40% versus building two native apps.
Yes — complete source code, design files, and IP transfer to you at final payment, and the apps are published under your own developer accounts. You are never dependent on us to maintain or extend your product.
90 days of free bug fixes, then maintenance plans from $800/month covering OS updates (Apple and Google ship major versions yearly), crash monitoring, and minor enhancements. Our 24/7 support desk handles critical incidents with a 4-hour response SLA.
Yes, end to end — developer account setup, store listings, privacy labels, and review responses. Google Play approval typically takes 1-3 days and Apple review 1-2 days; we manage rejections and resubmissions at no extra cost.
Related Services
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