Do you build mobile apps?

Yes, we build high-performance mobile applications using Kotlin and Swift for native development, and Flutter or React Native for cross-platform builds. We recommend the right approach based on budget, timeline, and performance goals.

What platforms do you develop for?

We build apps for both iOS and Android platforms using native development (Swift, Kotlin) and cross-platform frameworks (Flutter, React Native).

What is the process for building a mobile app with MarsDevs?

The process starts with understanding the client's requirements, designing the UI/UX, developing the app using agile sprints, and testing across various devices. We handle deployment to app stores, and provide post-launch support and maintenance.

What is the difference between native and hybrid mobile app development?

Native apps are built specifically for iOS or Android using platform-specific languages (Swift, Kotlin). Hybrid apps are developed using frameworks like React Native or Flutter, allowing one codebase to be deployed on both iOS and Android with near-native performance.

How long does it take to develop a mobile app?

Development time depends on the complexity of the app. Simple apps may take 4-6 weeks, while more complex apps with advanced features can take 12-16 weeks or longer.

Can MarsDevs help with app store submissions and updates?

Yes, we assist with the entire app submission process to both the Apple App Store and Google Play Store, including preparing all the necessary assets, handling approvals, and deploying updates.

Do you support IoT integrations with mobile apps?

Yes, we work with IoT integrations, allowing mobile apps to connect and interact with IoT devices, sensors, and hardware, enhancing the app’s functionality.

What technology stack do you use for mobile app development?

We use a variety of technologies including Swift and Kotlin for native apps, and Flutter, React Native for cross-platform apps. We also integrate with cloud services, APIs, and other backend systems for full-stack mobile app solutions.

Mobile App Development for iOS and Android Services

What mobile app development services does MarsDevs provide?

MarsDevs builds production mobile apps on iOS, Android, and cross-platform frameworks for companies from startups to enterprises across HealthTech, FinTech, E-commerce, Logistics, and EdTech. We have shipped 60+ mobile apps across 15 countries, with an average time to App Store of 10 weeks.

We build mobile apps that users keep installed, not just download once.

MarsDevs has shipped production mobile apps for companies from startups to enterprises across HealthTech, FinTech, E-commerce, Logistics, and EdTech since 2019. We build on iOS, Android, React Native, and Flutter, choosing the right platform for your product, your timeline, and your users. Not for our convenience.

Most mobile agencies optimise for the demo video. Production mobile apps are a different problem entirely. They need to handle real users on real networks, pass App Store review without last-minute rejections, perform across every OS version your users are running, and keep working when the backend is slow.

Our senior mobile engineers have built apps serving hundreds of thousands of active users without emergency patches. We work directly with founders and product leads, no account managers, no outsourced execution. The people you brief are the people who build your app.

60+Mobile apps shipped

15Countries where we have shipped

10 weeksAvg. time to App Store

What we build

Native iOS Development

Swift-built iOS apps designed to App Store guidelines and optimised for performance on every iPhone and iPad. We do not port web views into a native wrapper and call it an app. We build real native products your users are proud to open.

Native Android Development

Kotlin-built Android apps that handle the full fragmentation of the Android ecosystem without compromising on performance or experience. Production-ready across devices, OS versions, and screen sizes.

Cross-Platform Development

React Native and Flutter apps that share a single codebase across iOS and Android without sacrificing native performance. We pick the right framework for your product, not the one we are most comfortable with.

Hybrid App Development

Web-based mobile apps that install, behave, and perform like native. For products where a single web codebase needs to reach mobile users without the cost of two native builds.

Mobile Backend and API

The API layer that makes your mobile app reliable at scale. Authentication, push notifications, real-time sync, offline support, and the backend infrastructure that keeps the app working when networks do not.

App Modernisation and Migration

Legacy apps rebuilt for current OS versions, modern UX patterns, and the performance users now expect. We migrate without losing data, without starting from scratch on design, and without shipping a regression.

Mobile App Development for iOS and Android

Deliver powerful mobile solutions across platforms with custom native and hybrid app development services that ensure scalability and a smooth user experience.

Mobile App Development for iOS and Android

The Mobile App Development for iOS and Android That Ships Products, Not Promises.

01 / 09

Native iOS Development

Swift-built iOS apps designed to App Store guidelines and optimised for performance on every iPhone and iPad. We build real native products your users are proud to open, not web views wrapped in a native shell.

Swift and SwiftUI with full App Store guideline compliance
Optimised for every active iPhone and iPad screen size
First submission App Store approval, no last-minute rejections

Native Android Development

Kotlin with Jetpack Compose for modern UI development
Tested across the full Android device and OS fragmentation matrix
Google Play policy compliant on first submission

Cross-Platform Development

Single codebase, simultaneous iOS and Android launch
Native performance through platform-specific optimisations
Framework selected based on product needs, not team preference

Mobile Backend and API

Authentication, push notifications, and real-time sync built in
Offline-first architecture with background sync
Built for 50,000 concurrent mobile users from day one

Mobile UX Design

Screens designed to platform conventions that users recognise instantly. iOS and Android design languages applied correctly so your app feels native, not like a web page resized for mobile.

Platform-native navigation patterns for iOS and Android
Accessibility-first screens that pass WCAG 2.1 AA
Gesture-first interactions designed for thumb reach zones

App Store Launch Strategy

App Store and Google Play submissions handled end to end: metadata, screenshots, review preparation, and the submission process managed so your app ships without the back-and-forth that delays most launches.

App Store and Google Play metadata fully optimised for search
Review board preparation that prevents last-minute rejections
ASO setup to drive organic discovery from launch day

Mobile QA and Testing

Systematic testing across real devices, OS versions, and network conditions. We do not test on emulators and call it done. We test on the actual devices your users are running today.

Real device testing matrix across iOS and Android versions
Network condition simulation: 3G, 4G, offline and reconnect
Automated regression testing on every build

App Modernisation and Migration

Legacy codebase audit before a single line is rewritten
Phased migration with zero data loss and no downtime
Performance benchmarks defined before and after migration

Offline-First Architecture

Apps that work when the network does not. Local data persistence, background sync, conflict resolution, and the cache invalidation logic that keeps users productive regardless of connectivity.

Local-first data with deterministic sync on reconnect
Conflict resolution strategy designed before data model is set
Works fully on zero connectivity, syncs silently in background

01 / 09

Our Mobile Toolset

Technologies We Build Mobile Apps With

Swift

Kotlin

Flutter

Dart

React

TypeScript

Firebase

Android

GraphQL

Redux

Node.js

PostgreSQL

AWS

Docker

Swift

Kotlin

Flutter

Dart

React

TypeScript

Firebase

Android

GraphQL

Redux

Node.js

PostgreSQL

AWS

Docker

Client Outcomes

Mobile apps that ship results, not just screens.

16 case studies

← Click to explore

More below

HealthTechReact NativeiOS and AndroidUAE

Patient Engagement App

From paper appointment slips to 40,000 monthly active patients on mobile.

Overview

A UAE-based hospital group was losing patients to competitors with better digital experiences. Their existing app had a 2.1-star rating, crashed on appointment booking, and had no Arabic language support despite 60 percent of their patient base being Arabic-speaking. MarsDevs rebuilt the patient app from scratch on React Native, designing a bilingual experience with full right-to-left support, real-time appointment availability, telemedicine integration, and digital health records access. The new app launched across iOS and Android simultaneously. Within three months it had 40,000 active monthly users, a 4.8-star rating, and had reduced call centre volume by 35 percent as patients self-served through the app.

Challenges

Existing app crashed on appointment booking and had a 2.1-star rating across both stores.
No Arabic language or right-to-left layout support despite the majority of patients being Arabic-speaking.
Call centre overwhelmed with appointment queries that a functional app should have resolved.
No telemedicine capability, costing the hospital group patients who switched to digital-first competitors.

Solutions

Rebuilt the app on React Native with a shared codebase across iOS and Android, shipping both stores simultaneously.
Designed a full bilingual experience with Arabic right-to-left layout and English left-to-right, switchable in-session.
Integrated real-time appointment availability, telemedicine via WebRTC, and digital health record access.
Implemented push notification system for appointment reminders that reduced no-show rates by 28 percent.

Outcomes

40KMonthly active users in 3 months

4.8★App store rating (was 2.1)

35%Call centre volume reduction

28%No-show rate reduction

2 storesiOS and Android launched simultaneously

Explore All Case Studies

Client Testimonials

Founders Across Industries Trust MarsDevs

C★★★★★4.9 / 5 on ClutchRead our reviews

Brand Strategist

“Marsdevs, these guys are awesome team. They helped us with very complicated technology problems, and the problem was we didn’t even know where to begin uncovering those problems. We knew they existed, but we needed a sound partner to figure them out and fix them for us.”

CEO

Outstanding service that combines efficiency, excellence, and affordability. It's a challenge to come across a provider that excels in these three areas simultaneously. Taking a chance on them was a gamble, but the results exceeded our expectations. Extremely satisfied, I would recommend them without hesitation.

Founder

Absolutely blown away by the level of skill, the speed of their work, and how they didn't break the bank. They made themselves available to Suit my UK timezone and schedule. We are surely one happy customer!

Co-Founder

MarsDevs team is a great to work with. They are quick, responsive and work hard to understand your needs. The team is knowledgeable on the technical aspects of my projects - and are always willing to share their expertise in this Area.

Project Lead

We had a vague idea of what we wanted to build for our target audience. Our market is very communal and new players are expected to play by the rules of the market, more than the established ones. MarsDevs team was the perfect fit for this kind of a job. They were detail- oriented; both while assessing the needs and while developing the solution. We are very thankful for their role.

What results has MarsDevs delivered for its clients?

Since 2019, MarsDevs has shipped 60+ products with an 80% repeat client rate and a 98% client success rate. Our portfolio founders have raised over $50M, and our engineering teams have shipped 290,000 lines of production code while handling 5.4 billion transactions annually.

Numbers That Prove We Deliver

Since 2019, we have shipped 80+ products with founders who needed a real engineering partner, not just a vendor. Senior engineers, product thinking, and speed built in from day one.

80%

Repeat client rate

25+

MVPs launched in under 90 days

$50M+

Raised by our portfolio founders

3x

Faster time to market

290,000

Lines of production code shipped

40%

Faster delivery vs industry average

60+

Products shipped for teams

98%

Client success rate

5.4 Billion

Transactions handled annually

Why do founders choose MarsDevs as their engineering partner?

Founders across the Middle-East, Singapore, and Europe choose MarsDevs because we embed senior engineers with product instinct directly into their team, deliver predictably without a single missed launch across 100+ products, and architect every product for scale from day one.

The Mobile App Development for iOS and Android Partner That Ships Products, Not Presentations

Most founders waste 6 to 12 months working with vendors who over-promise and under-deliver. MarsDevs is the engineering partner founders across the Middle-East, Singapore, and Europe rely on to go from idea to production in weeks. We bring deep domain expertise, senior engineers, and a product mindset so your roadmap actually moves.

Senior Engineers With Product Instinct

Our engineers do not just write code. They think in outcomes. Every sprint is focused on shipping features that move the needle, not just closing tickets.

A Partner, Not a Vendor

We embed into your product process from day one. Stand-ups, reviews, architecture decisions, we are in the room, not waiting for a spec document to appear in our inbox.

Predictable Delivery, Every Time

We have delivered over 100 products across industries without a single missed launch. Our structured engineering process means fewer surprises and more momentum for your business.

Built for Scale From Day One

Every product we build is architected to grow with you. No shortcuts, no technical debt landmines. When your user base 10x, your product handles it without breaking a sweat.

Mobile App Delivery Process

How We Ship Mobile Apps That Survive Production

Discover

Requirements workshop, user research, and platform selection. We choose native or cross-platform based on your product needs, not our convenience.

Design

iOS and Android screen designs built to platform guidelines. Every interaction, gesture, and screen state designed before development begins.

Develop

Sprint-based native or cross-platform development with working builds delivered every two weeks for your review and feedback.

Test

Real device testing across iOS and Android versions, network conditions, and edge cases. No emulator-only sign-off.

Launch

App Store and Google Play submission managed end to end. Metadata, screenshots, review prep, and first-submission approval.

Grow

Post-launch monitoring, OS update compatibility, performance tuning, and new feature development as your user base scales.

Mobile App Delivery Process

How We Ship Mobile Apps That Survive Production

Discover

Requirements workshop, user research, and platform selection. We choose native or cross-platform based on your product needs, not our convenience.

Design

iOS and Android screen designs built to platform guidelines. Every interaction, gesture, and screen state designed before development begins.

Develop

Sprint-based native or cross-platform development with working builds delivered every two weeks for your review and feedback.

Test

Real device testing across iOS and Android versions, network conditions, and edge cases. No emulator-only sign-off.

Launch

App Store and Google Play submission managed end to end. Metadata, screenshots, review prep, and first-submission approval.

Grow

Post-launch monitoring, OS update compatibility, performance tuning, and new feature development as your user base scales.

Frequently Asked Questions

Questions, meet answers.

Most of our mobile app engagements go from kickoff to App Store live in 10 to 16 weeks depending on scope and complexity. A focused MVP with core flows ships in 10 weeks. A full-featured consumer app with backend, admin tools, and integrations typically takes 14 to 16 weeks. We have shipped emergency builds in 6 weeks for founders who needed to validate before a funding deadline. The schedule is set at kickoff based on feature scope, not padded for agency comfort.

Both, always. We build native iOS with Swift, native Android with Kotlin, and cross-platform with React Native and Flutter. For most founders, we recommend launching iOS and Android simultaneously from a single cross-platform codebase to maximise market coverage while keeping the build cost manageable. For products where platform-specific performance is a differentiator — real-time video, AR, financial-grade biometrics — we recommend native builds on each platform. We make this recommendation based on your product requirements, not our team composition.

Native development means building a separate app for each platform — Swift for iOS, Kotlin for Android — using the full native API surface and toolchain. Cross-platform development means writing a single codebase in React Native or Flutter that compiles to both platforms. Native gives you the deepest access to platform capabilities and the most predictable performance for computationally intensive features. Cross-platform gives you faster time to market, lower initial build cost, and a single codebase to maintain long-term. The right choice depends on your product requirements, timeline, and budget — not a blanket rule.

Yes. App Store and Google Play rejection is almost always avoidable with the right preparation. We have never had a client app permanently rejected. We design every app to App Store and Google Play guidelines from the first sprint, not as a final check before submission. We prepare the full submission package — metadata, screenshots, privacy policy, data handling declarations, and review notes — and we manage the back-and-forth with Apple and Google review teams directly. If a review board raises questions, we respond within 24 hours.

Offline-first architecture is a core capability, not an afterthought. We design the local data model before writing a line of backend code, implement background sync that queues operations locally and pushes them when connectivity is restored, and build conflict resolution logic for cases where the same data is modified in multiple places. Apps we have shipped for logistics, field sales, and healthcare all work fully on zero connectivity and sync silently when network is available. The test for offline-first is simple: turn off the phone's internet connection and try to use the app normally.

The backend is the infrastructure that makes your app reliable at scale: authentication with biometric and social login support, push notification infrastructure across iOS and Android, real-time data sync using WebSockets or server-sent events where the product requires it, file storage and media handling, API versioning so the backend evolves without breaking older app versions in the wild, and monitoring that alerts before users notice a problem. We build the backend and the app as a single system, not two separate projects handed off between teams.

Internationalisation is built into the app from the first sprint, not retrofitted before launch. We implement locale-aware string management, right-to-left layout support for Arabic, Hebrew, and Urdu where required, date, currency, and number formatting by locale, and in-session language switching without requiring the user to restart the app. We have shipped bilingual apps with full Arabic right-to-left support for markets in the UAE and Saudi Arabia where this is not optional.

Create Seamless Mobile Experiences with Expert Native & Hybrid App Development

What mobile app development services does MarsDevs provide?

Native iOS Development

Native Android Development

Cross-Platform Development

Hybrid App Development

Mobile Backend and API

App Modernisation and Migration

Mobile App Development for iOS and Android

Mobile App Development for iOS and Android

The Mobile App Development for iOS and Android That Ships Products, Not Promises.

Native iOS Development

Native Android Development

Cross-Platform Development

Mobile Backend and API

Mobile UX Design

App Store Launch Strategy

Mobile QA and Testing

App Modernisation and Migration

Offline-First Architecture

Technologies We Build Mobile Apps With

Mobile apps that ship results, not just screens.

Patient Engagement App

Founders Across Industries Trust MarsDevs

What results has MarsDevs delivered for its clients?

Numbers That Prove We Deliver

80%

25+

$50M+

3x

290,000

40%

60+

98%

5.4 Billion

Why do founders choose MarsDevs as their engineering partner?

The Mobile App Development for iOS and Android Partner That Ships Products, Not Presentations

Senior Engineers With Product Instinct

A Partner, Not a Vendor

Predictable Delivery, Every Time

Built for Scale From Day One

2019

60 +

80 +

75000 +

Mobile App Delivery Process

How We Ship Mobile Apps That Survive Production

Mobile App Delivery Process

How We Ship Mobile Apps That Survive Production

Which industries does MarsDevs build products for?

Built Products Across Industries That Matter

Health Care

Fintech

Travel

E-Commerce

Restaurant

ED Tech

Social Media

Social Impact

Food & Beverages

Sports

Questions, meet answers.

Insights for Teams Building with AI and Software

Scaling Your Engineering Team Beyond MVP: The Post-MVP Org Playbook by ARR Stage

SOC 2 & HIPAA-Ready Engineering: Building Compliance Into the Delivery Pipeline

Vendor Consolidation in 2026: Replacing Multiple Dev Shops With One Engineering Partner

Don’t Take Our Word For It

Let’s Build Something That Lasts