Why choose cross-platform instead of native development?

Cross-platform development allows a single codebase to run on both iOS and Android, reducing development costs, simplifying long-term maintenance, and accelerating delivery. For most startup products, this approach delivers the best balance between performance, scalability, and budget - without the overhead of maintaining two separate codebases.

Do you build hybrid or native apps?

We specialise in hybrid and cross-platform mobile development using React Native and Ionic. This approach delivers native-quality performance on both iOS and Android from a single codebase - reducing cost and accelerating delivery without sacrificing quality.

Do you build mobile games?

Yes. We build mobile games using Unity - including casual games, puzzle games, and educational apps for children.

Can you add AI features to a mobile app?

Yes. We integrate AI into mobile products using Google Gemini, OpenAI, and Anthropic Claude. See AI Integration Services for the full scope of what's possible.

Do you build mobile MVPs?

Yes. Mobile MVP development is a core part of our service. We define the minimum feature set needed to validate your idea, build it to production quality, and deliver an app you can test with real users and present to investors. Timeline depends on scope - we give you a realistic estimate after discovery.

Do you work with startups and agencies?

Yes. We work with startups, SaaS companies, and agencies - including white-label partnerships where we deliver mobile products under your brand.

Can you provide dedicated mobile developers?

Yes. You can add vetted React Native, Ionic, or Unity developers to your team through Staff Augmentation.

Do you support the app after launch?

Yes. Post-launch support includes bug fixes, performance optimisation, feature additions, and scaling as your user base grows.

iOS & Android Engineering

Mobile App Development Services for Startups

Custom mobile applications built for startups and product teams that need reliable, scalable software delivered without unnecessary delays.

Overview & Experience

Cross-Platform Mobile Engineering Built for Scale

Cross-Platform Efficiency

Building a mobile app that works well across iOS and Android, performs reliably at scale, and remains maintainable as your product evolves is harder than it looks. TeamUnibrains helps founders, CTOs, and product teams design, build, and launch production-ready mobile applications using React Native, Ionic, and Unity - without the overhead and delays that slow most development engagements down.

Clean, Tested Architecture

We specialise in hybrid and cross-platform mobile development: a single codebase that runs natively on both iOS and Android. This approach reduces cost, accelerates delivery, and simplifies long-term maintenance compared to building and managing two separate native apps. Every build is grounded in clean architecture, strong engineering practices, and real product thinking - not just code output.

Proven Product Experience

For more than a decade TeamUnibrains has been building mobile and software products that reach real users, working as a focused team for the past five years. In that time we have partnered with more than 15 startups, SaaS companies, and enterprises across the US, EU, UK, Asia, and the Middle East - across industries from healthcare and sports to logistics, automotive, and gaming.

Application Types

What We Build

We specialise in custom mobile app development for startups and product teams building cross-platform applications, mobile MVPs, internal tools, and mobile games. Every product is engineered for native-quality performance, clean offline and sync handling, and scalable backend integration.

Typical projects include:

Cross-platform mobile apps for iOS and Android
Mobile MVPs for idea validation and investor demos
B2B SaaS mobile applications
Marketplace and platform-based apps
Internal business and operations tools
AI-enabled mobile apps with intelligent features
Mobile games (casual, puzzle, and educational)

Solving Execution Bottlenecks

Where Mobile Projects Go Wrong - And How We Help

Slow Development Cycles

Many mobile projects stall between idea and launch. We use two-week sprints with working builds delivered every cycle so you see real progress continuously rather than waiting for a final delivery.

Performance Issues Across Devices

Cross-platform apps built without care perform poorly on one platform or the other. We optimise for both iOS and Android from the beginning - not as an afterthought before launch.

Hiring Bottlenecks

Finding experienced React Native, Ionic, or Unity developers takes time most startups don't have. Many teams bring us in as an extension of their engineering function from week one. (See Staff Augmentation)

Architecture That Can't Scale

Apps built quickly without modular structure become expensive to extend. We use clean architecture, reusable components, and well-defined APIs so new features don't introduce unnecessary technical debt.

Lack of Product Thinking

Most development teams execute what they're told. We help you make the right product decisions first - then build.

Core Frameworks & Capabilities

Mobile App Development Services

React Native app development

React Native is our primary framework for cross-platform mobile development. It delivers a native user experience while allowing a shared codebase across iOS and Android - faster to build, easier to maintain, and more cost-effective than two separate native builds.

We have built React Native applications across a range of industries and product types:

A warehouse management app handling real-time inventory tracking and operational workflows
A sports coaching app connecting coaches and athletes with session management and performance tracking
A mental health app delivering contextual, empathetic support experiences for users through guided conversational journeys

React Native is the right choice for startups that need speed, scalability, and a reliable codebase that a small team can own and extend. If you need to hire mobile app developers without going through a lengthy recruitment cycle, our Staff Augmentation service gives you vetted React Native developers ready to plug into your sprints.

Ionic mobile app development

Ionic is our second core cross-platform framework - well suited for teams with web development backgrounds and an excellent choice for internal business applications, operational tools, and products where rapid iteration and long-term maintainability are more important than device-specific native features.

We have delivered Ionic applications including a car service management system handling booking, job tracking, and customer communication for an automotive services business.

We build production-ready Ionic apps optimised for performance, long-term maintainability, and clean integration with existing backend systems.

Unity mobile game development

We build cross-platform mobile games using Unity - covering casual games, puzzle games, and educational experiences designed for iOS and Android.

Past work includes:

A puzzle game with over 100,000 downloads on the App Store and Google Play - built with smooth gameplay mechanics and optimised for cross-device performance
Two educational games for kids with 5,000+ and 10,000+ downloads respectively, designed to make learning engaging through interactive, game-based mechanics

Unity gives us the flexibility to build visually rich, performant mobile games while keeping the codebase maintainable across platforms and future updates.

AI-enabled mobile app development

We integrate AI capabilities into mobile applications using platforms like Google Gemini, OpenAI, and Anthropic - adding intelligent features that improve user experience and reduce manual work. For the full scope of what we build with AI, see AI Integration Services.

App modernisation and maintenance

Existing mobile apps that still work but have become hard to maintain don't always need a full rebuild. We improve and scale existing apps by refactoring legacy code, improving performance and UX, adding new features and integrations - including social media API integrations (YouTube, Instagram, Facebook, LinkedIn, Pinterest) - and ensuring the codebase remains maintainable as the product grows.

Delivery Methodology

How We Work

Timeline depends on the scope, complexity, and integrations involved. We give you a realistic estimate after the discovery session - not before.

Stage 01 of 05 /Mobile Engineering Phase

Discovery

01 / 05

Detailed Stage Description

Define scope, user flows, technical approach, and success metrics.

For AI-enabled apps, we also map where AI adds real value before development begins.

Key Stage Deliverables & Focus

Scope, user flows & success metrics definition
Technical architecture & approach selection
Cross-platform framework alignment
AI feasibility and value assessment

Core Differentiators

Why Startups Choose TeamUnibrains

Faster delivery

Working builds every two-week sprint - not a single delivery at the end.

Strong engineering process

Clean architecture, CI/CD pipelines, automated testing, and structured code reviews on every project.

Three frameworks, one team

React Native for cross-platform performance, Ionic for web-background teams and operational tools, Unity for mobile games - every technology recommendation is based on your product requirements, expected growth, budget, and long-term roadmap, not on a preferred framework.

Startup-friendly engagement

Flexible pricing, quick onboarding, and no unnecessary long-term lock-ins.

Security and code quality

Secure development practices, access controls, and high code standards from day one - not bolted on before launch.

Flexible team models

Need to scale faster? Staff Augmentation adds vetted mobile developers into your sprints. Agencies can also pair this with White-Label Software Development for client delivery under their own brand.

Technology Stack

Technologies We Use

Cross-platform frameworks

React NativeIonic

Game development

Unity

Backend

Node.jsNest.jsExpress.jsPython (Django)Java

Infrastructure

FirebaseSupabaseAWS

AI integrations

OpenAIGoogle GeminiAnthropic Claude

Engineering

CI/CD pipelinesautomated testingsecure deployments

Technologies used by layer in Mobile App Development
Layer	Technologies
Cross-platform frameworks	React NativeIonic
Game development	Unity
Backend	Node.jsNest.jsExpress.jsPython (Django)Java
Infrastructure	FirebaseSupabaseAWS
AI integrations	OpenAIGoogle GeminiAnthropic Claude
Engineering	CI/CD pipelinesautomated testingsecure deployments

Our engineers also use tools like Claude, Cursor, and GitHub Copilot internally to accelerate development while maintaining strong code review and quality standards.

Vertical Expertise

Industries and Use Cases

We build mobile apps for real, specific business needs - not generic categories.

SaaS and B2B: Mobile companions to web platforms, internal business tools, marketplace apps
Logistics and operations: Warehouse management, inventory tracking, field service tools
Sports and fitness: Coaching platforms, athlete management, session and performance tracking
Healthcare and wellbeing: Mental health support apps, patient engagement, guided user journeys
Automotive: Service management, booking and job tracking, customer communication
Gaming: Casual games, puzzle games, educational experiences for children

Got Questions?

Frequently asked questions - mobile app development

Cost depends on features, complexity, framework choice, and integrations. A focused MVP with core features costs less than a full-featured platform with AI integrations, complex backends, or marketplace functionality. We provide a transparent estimate after a brief discovery session - no obligation required.

Let's Build Together

Ready to build your mobile app?

TeamUnibrains is a mobile app development company focused on startups and product teams that need speed, quality, and reliable execution.

Tell us about your product, users, timeline, and business goals. We will recommend the right framework, define a practical roadmap, and help you launch a mobile application that is ready for real users - not just a demo.

If your roadmap also includes web functionality, AI features, or additional engineering capacity, we can combine this work with Web Development, AI Integration Services, or Staff Augmentation.