Mobile App Development Company

iOS, Android and Flutter apps for US businesses, from a free clickable design to App Store launch. Starter MVP from $3,000, rates from $35 per hour.

Customized Mobile App Development

Bring your ideas to life with our customized mobile app development services. At Three Circle, we build innovative, user-friendly, and high-performance mobile applications tailored to your business goals. Using the latest technologies, we create secure, scalable, and responsive apps that deliver seamless experiences across every device.

Android App Development

We develop fast, secure, and feature-rich Android applications tailored to your business and user needs.

iOS App Development

Our team creates high-quality iPhone and iPad applications with smooth performance and intuitive user experiences.

Cross-Platform Solutions

Build powerful cross-platform applications with a single codebase, ensuring consistent performance across Android and iOS devices.

Start With a Free App Design

Tell us your idea on a free call and we will design 5-6 key screens of your app for free, with no obligation. Then build your starter MVP from $3,000, or $1,500 when you claim the free design.

Why Businesses Choose Three Circle for Mobile Apps

iOS & Android

Free App Design

From $35/Hour

Real Apps Launched

Flutter & Native

Tested Every Sprint

User-Centered Design

Support After Launch

Real Results From Our Apps

We build apps that people use every day. A few results from apps we have built:

5,000+ Employees

Our HR platform and mobile app is used by more than 5,000 employees for attendance and leave.

1,000+ Downloads

Optimized Strength, our AI-powered fitness app built with Flutter, has more than 1,000 downloads.

Native iOS and Android

Smart Eats and CareeRails are native apps backed by Laravel and Node.js APIs.

Why choose Three Circle for your Mobile app development project?

We have built and launched real mobile apps, including an HR app used by more than 5,000 employees, the Optimized Strength fitness app with 1,000+ downloads, and apps for US clients such as LuvInvite and MomoMi. We stay with you after launch to support and grow your app.

Real Apps in Use:

HR app with 5,000+ users, Optimized Strength with 1,000+ downloads.

iOS, Android and Flutter:

Native Swift and Kotlin, or one Flutter app for both.

Full Product Team:

Design, mobile, back end, APIs and admin panels in one team.

US-Registered Company:

Registered in Sachse, Texas, working with clients across the US.

Clear Pricing:

Written estimate before work starts; starter MVP from $3,000.

Mobile App Development Services We Offer

Three Circle is a mobile app development company that designs, builds and launches high-performing apps for iOS and Android. From the first idea to the App Store and Google Play, our mobile app developers handle strategy, UI/UX design, front-end and back-end development, testing, launch and long-term support for startups and established businesses in the US and UK.

Native iOS and Android App Development

We build native apps with Swift for iPhone and iPad and Kotlin for Android when you need maximum performance, deep device integration and the best platform-specific experience. See our iOS and Android services.

Cross-Platform App Development

With Flutter and React Native we build one codebase for both platforms, so you launch faster and spend less on development and maintenance.

Mobile UI/UX Design

Intuitive, on-brand interfaces designed around your users, from wireframes and interactive prototypes to polished screens that follow Apple and Google design guidelines.

App Back End, APIs and Cloud

Secure, scalable back ends with ASP.NET Core, Node.js or Laravel, hosted on Azure, AWS or Google Cloud, with user accounts, payments, push notifications and admin dashboards.

AI-Powered Mobile Apps

We add AI features such as personalised recommendations, chat assistants and large language model (LLM) integrations that make your app smarter and more engaging.

App Store Launch, Maintenance and Support

We publish your app on the App Store and Google Play, monitor performance and crashes, and keep it updated for every new iOS and Android release.

Our Mobile App Development Process

A proven, transparent mobile app development process that keeps your project on time and on budget:

Discovery and strategy: goals, target users, core features, platform choice and a realistic roadmap.
UI/UX design: wireframes and clickable prototypes you can test on your own phone.
Agile development: two-week sprints with a working build after every sprint.
Testing and QA: automated tests plus manual testing on real iOS and Android devices.
Launch: store listings, compliance and submission to the App Store and Google Play.
Support and growth: analytics, updates and new features based on user feedback.

Mobile App Development Case Studies

Optimized Strength: AI-Powered Fitness App with 1,000+ Downloads

Optimized Strength is a cross-platform fitness app built with Flutter for iOS and Android and a secure ASP.NET Core back end. It gives users more than 1,300 exercises, personalised AI coaching and progress tracking with visual charts. Result: 1,000+ downloads.

HRM Platform and Mobile App Used by 5,000+ Employees

For a growing organisation we built a complete HR management platform: a web admin dashboard (React and Angular) for employee records, attendance and office operations, a Flutter mobile app for attendance and leave requests, and an ASP.NET Core API behind both. Result: more than 5,000 active users.

Smart Eats: Native Android and iOS Food Deals App

Smart Eats helps people discover the best local dining deals. Users browse restaurant menus, unlock exclusive offers and order their favourite meals. We built native Android and iOS apps powered by a Laravel (PHP) back end.

Want results like these? Tell us about your mobile app project and get a free consultation.

Our Mobile App Technology Stack

Native: Swift and SwiftUI for iOS, Kotlin and Jetpack Compose for Android
Cross-platform: Flutter, React Native
Back end: ASP.NET Core, Node.js, Laravel (PHP), Firebase
Cloud: Microsoft Azure, AWS, Google Cloud
AI: LLM integrations, recommendation engines, chatbots
Quality: automated testing, CI/CD with GitHub Actions, Codemagic and Fastlane, crash reporting with Crashlytics

Mobile App Development Engagement Models and Pricing

Choose the way of working that fits your budget and timeline:

Fixed-Price Projects

Best for MVPs and projects with a clear scope. You agree on price, timeline and features before development starts.

Time and Materials

Flexible for products that will evolve. You pay for actual development time and can change priorities after every sprint.

Hire Dedicated Mobile App Developers

Add experienced mobile app developers, designers and QA engineers to your team on a monthly basis for long-term development.

Want a quick budget? Use our app development cost calculator or request a free estimate.

Related guide: How to choose your mobile app tech stack.

Mobile App Development Services for US Businesses

Three Circle is a mobile app development company for startups and businesses across the US. We design, build and launch iPhone, Android and cross-platform apps, together with the back end, admin panel and APIs behind them, and we keep improving the app after launch. Our rates start from $35 per hour, a starter MVP starts from $3,000, and we can design 5-6 key screens of your app for free before you decide.

iOS App Development

Native iPhone and iPad apps built with Swift and SwiftUI and published on the App Store. See our iOS app development services.

Android App Development

Native Android apps built with Kotlin and Jetpack Compose and launched on Google Play. See our Android app development services.

Cross-Platform App Development

One Flutter app for iPhone, Android and the web, which usually lowers cost and time to launch. See our Flutter app development services.

Enterprise Mobile Apps

Secure apps for employees, partners and field teams, with single sign-on, user roles and integrations. See enterprise app development.

MVPs for Startups

A first version of your product to test with real users and show investors. See our MVP development offer.

App Design (UI/UX)

Wireframes, clickable prototypes and polished screens for iOS and Android. See UI/UX design services.

Back End, APIs and Integrations

Secure back ends with ASP.NET Core, Node.js or Laravel, plus payments with Stripe, PayPal and Plaid, maps and AI features. See payment integration and AI integration.

Mobile Apps We Have Built

HRM Platform and Mobile App Used by 5,000+ Employees

Smart Eats: Native Android and iOS Food Deals App

Careerails: AI Recruitment Platform with an iOS App and Node.js Back End

Careerails modernises hiring with AI candidate matching, job distribution and visual hiring pipelines. We built the platform on a scalable Node.js back end and delivered a native iOS app for the platform.

LuvInvite: Party Sharing and Event Management App

LuvInvite is a party sharing and party management app for a US client. It manages a party end to end, from planning and inviting guests to sharing the event, all in one place.

MomoMi: Crypto Wallet for Africa and the MENA Region

MomoMi is a crypto wallet app built for users in Africa and the Middle East and North Africa (MENA), with cryptography-based security to protect users’ keys and transactions.

See more in our portfolio.

Get a Free App Design, Then Build Your MVP

Not sure yet? Start with no risk:

Free clickable design: we design 5-6 key screens of your app for free, with no obligation.
Starter MVP: from $3,000, or $1,500 (50% off) when you claim the free design.
Grow in phases: add features after you test the app with real users.

Read how to build an MVP or see the MVP offer.

How Much Does Mobile App Development Cost?

The cost of a mobile app depends on the platforms (iOS, Android or both), the number of screens and user roles, the back end, and integrations such as payments, maps or AI. As a guide:

Starter MVP: from $3,000 ($1,500 with the free design).
Full mobile app (iOS and Android, admin panel, integrations): priced by scope after a free call.
Hourly work and dedicated developers: from $35 per hour.

Every project starts with a written estimate. Try the app development cost calculator or read how much it costs to build an app.

Native or Cross-Platform: Which Should You Choose?

Native apps (Swift for iOS, Kotlin for Android) give the best performance and the deepest access to device features. Cross-platform apps (Flutter) share one codebase across iPhone and Android, so they usually cost less and launch faster. We help you choose on the free call. Read Flutter vs native app development and Flutter vs React Native.

We build apps for fintech, healthcare, restaurants, logistics and education, and we work with clients across the US, including Dallas.

Want results like these? Tell us about your mobile app project and get a free consultation.

Frequently Asked Questions

1. What mobile app development services do you offer?

We design and build iOS (Swift), Android (Kotlin) and cross-platform Flutter apps, plus UI/UX design, back ends and APIs, admin panels, App Store and Google Play launch, and maintenance after launch.

2. How much does it cost to build a mobile app?

A starter MVP starts from $3,000, or $1,500 when you claim our free design of 5-6 key screens. Larger apps are priced by scope after a free call, and our rates start from $35 per hour.

3. How long does it take to build an app?

It depends on the features and platforms. You get a timeline with your written estimate, and we share test builds you can install every two weeks.

4. Should I build a native app or a Flutter app?

Native (Swift, Kotlin) is best for maximum performance and device features. Flutter gives you one app for iPhone and Android, which usually lowers cost. We recommend the right option on a free call.

5. Do you publish the app on the App Store and Google Play?

Yes. We prepare the store listings, handle App Store and Google Play review, and release updates after launch.

6. Can you design the app before we commit?

Yes. We design 5-6 key screens of your app as a free clickable design, with no obligation.

7. Do you support the app after launch?

Yes. You get 30 days of free bug fixing after go-live, then optional maintenance, updates and new features.

8. Can you add payments, maps or AI to my app?

Yes. We have built Stripe, PayPal and Plaid integrations, maps and location features, and AI features such as AI coaching and AI matching.

9. Have you built apps for US clients?

Yes. Our US work includes LuvInvite, a party sharing and event management app, and MomoMi, a crypto wallet for Africa and the MENA region, as well as web platforms such as CannAvance and Grant Intel.

10. Do you work with startups?

Yes. Startups can begin with a free clickable design and a starter MVP from $3,000 ($1,500 with the free design), then grow the app in phases.

Ready to Develop Your Mobile App?

Request a quote for our mobile app development services. As an experienced mobile app development agency, we are ready to bring your ideas to life with our expert mobile application development solutions.