Custom Mobile App Development
We design innovative, high-performance, and scalable iOS and Android applications, built for your users and aligned with your business goals.
Does your mobile project require custom development ?
As a mobile app agency, we step in when standard solutions are no longer enough and your mobile app must precisely align with your business needs.
You are launching an innovative startup
You want to test your concept quickly on the market. You need a robust mobile MVP, delivered in a few months, to validate your hypotheses without blowing your development budget.
Your field teams lack tools
Your business processes require a custom mobile app capable of working on the go or even offline, to ensure data reliability and improve employee productivity.
You manage a connected object (IoT)
Your hardware needs a mobile app capable of real-time communication via Bluetooth (BLE) or Wi-Fi to configure, monitor, and control your connected equipment.
You want to build customer loyalty
Your customers' habits have become mobile-first. You are looking for a secure mobile platform to manage customer relations, streamline transactions, and maximize user engagement.
Native development costs are slowing down your project
Maintaining two separate codebases for iOS and Android is weighing on your budget. You are looking for a high-performance cross-platform solution to reduce costs without sacrificing quality.
Your existing app is obsolete
Significant technical debt is blocking your mobile app's evolution. You need a modern, long-lasting redesign adapted to current iOS and Android standards.
The mobile apps we design
From iOS/Android app creation to high-traffic products, here are the types of custom mobile apps we develop :
Consumer App (B2C)
Creation of intuitive, aesthetic, and engaging B2C mobile apps (social networks, e-commerce, services, gamification) to win over new users and maximize retention for your consumer apps.
React Native · iOS · Android
Business App (B2B)
Custom business mobile apps for your field teams, with fine-grained role management, robust offline modes, and secure synchronization with your existing information systems (ERP, CRM, API).
Productivity · API · OfflineIoT & Connected Objects App
Mobile apps designed to control your hardware equipment in real time through seamless Bluetooth Low Energy (BLE), Wi-Fi, or MQTT communication.
IoT · Bluetooth · Wi-Fi
Progressive Web App (PWA)
The best of web and mobile : apps accessible directly from a browser without store installation. They are fast, lightweight, and cost-effective to maintain.
Web · PWA · Cost-effectiveTechnologies serving your mobile apps
Every mobile technology has its strengths. We choose the best combination based on your project, your budget, and your functional constraints.
We never choose a mobile technology out of habit. The right choice between cross-platform (React Native, Flutter) or PWA depends on your context: expected performance, hardware access, budget, schedule, and the skills of your internal teams.
Clear, precise, and directly usable deliverables
Structured deliverables for complete control over your mobile app.
You own 100% of your custom mobile app.
We design iOS and Android apps adapted to your uses, with no vendor dependence or technical lock-in.
At each sprint, you receive audited, documented code that is ready to be deployed to the stores.
This guarantees a reliable, maintainable mobile app capable of evolving with your business.
UX/UI Mockups and Interactive Prototypes
Elegant, dynamic interfaces validated by your users before a single line of code is written.
Documented API (Swagger / OpenAPI)
Testable endpoints and clear contracts between the mobile app and the backend.
Automated Tests and Security Matrix
Unit, integration, and end-to-end tests guaranteeing the reliability and security of your app.
App Deployed on the Stores
End-to-end support up to validation and publication on the App Store and Google Play.
100% Proprietary Source Code
Complete delivery of the code, without any technical lock-in or vendor dependence.
Why clients choose us for their mobile apps
No vague promises. Concrete, measurable, and contractual commitments.
From scoping to publishing your mobile app on the stores in 4 steps
An iterative and transparent process so your mobile apps move forward every week, sprint after sprint.
Needs Analysis & UX/UI
Workshops to define your objectives, the technical architecture, and the mockups for your iOS and Android app.
1 - 3 weeksCustom Iterative Development
Sprint-based development in React Native, Flutter, or native, with a demo at the end of each sprint. A high-performance app compatible with iOS and Android.
4 - 12 weeksTesting and Optimization
Rigorous testing on physical devices and emulators to ensure a stable, secure, and highly performant mobile app.
2 - 3 weeksLaunch and Store Deployment
Full support for publication on the App Store and Google Play, post-launch monitoring, and Application Maintenance.
ContinuousReady to plan your mobile app project ?
Don't let technical debt or uncertainty slow down your app. Let's talk about it.
The experts who design your mobile app
Senior profiles, specialized in iOS and Android mobile app development.
Our other areas of expertise
Frequently Asked Questions about Mobile App Development
Which technology should I choose between native, React Native, and Flutter ?
React Native and Flutter (cross-platform) allow you to pool code for iOS and Android, significantly reducing costs and time-to-market while offering near-native performance. Native development (Swift for iOS, Kotlin for Android) remains relevant for needs requiring advanced graphic power or highly specific hardware access.
Do you handle publication on the App Store and Google Play ?
Yes, we manage deployment from end to end: developer account setup, store listing creation, submission, Apple and Google validation back-and-forths, right up to the actual publication of your mobile app.
How much does custom mobile app development cost ?
The budget depends on the project’s complexity: number of screens, features, API integrations, targeted platforms. A mobile MVP usually starts around €30,000, while a complex business app ranges between €80,000 and €150,000. We provide a precise quote after a scoping phase.
Can you develop a mobile app connected to an object (IoT) ?
Absolutely. We have strong expertise in IoT mobile apps and have delivered numerous apps capable of communicating, configuring, and controlling hardware equipment via Bluetooth Low Energy (BLE), Wi-Fi, or MQTT in real time.
How long does it take to develop a mobile app ?
Creating a functional mobile MVP generally takes 2 to 3 months. For a fully developed app, expect 4 to 8 months. Our agile approach allows you to regularly test intermediate versions without waiting for the end of the project.
Do you provide maintenance after launch ?
Yes. A mobile app lives in an ever-changing ecosystem (iOS and Android updates, new devices, store evolutions). We offer Application Maintenance contracts to fix bugs, evolve the product, and guarantee long-term compatibility.
