Software & AI · From strategy to production

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Mobile App Development: iOS and Android, All the Way to the App Stores

Etixio handles iOS and Android mobile app development, native or cross-platform, connected to your information system and your users’ journeys. We build the app, its backend and its AI features, publish it on the app stores and maintain it afterwards.

For

Companies launching a consumer, field or internal app, or taking over an existing one

What you get

iOS and Android app, backend, integrations and AI features, published on the stores and maintained

Technologies

Flutter, React Native, Swift, Kotlin; Node.js, Python and TypeScript backend

Timeline

A mobile MVP can usually be delivered in 6 to 10 weeks, depending on scope

What we build

A scope tied to your business.

A mobile app supports a use case under specific conditions: on the move, small screens, variable network coverage and interruptions. We examine these situations before choosing the technologies and features. The product can serve your customers or your field teams, connected to your data and services.

Mobile experience

Define the useful user journeys and features, taking into account the constraints of phone use.

App & API

Build the interfaces and the exchanges with your services, then manage access and data.

Testing & evolution

Check user journeys on the targeted devices and prepare distribution, monitoring and maintenance.

Backend & administration

APIs, databases, authentication and role management, admin interfaces and integrations with your ERP or CRM.

A hand holding a smartphone above a desk

The right mobile project

Mobile app development: what is it for?

Launch a mobile MVP

Validate a market or product with a first usable scope, then iterate based on real usage. See MVP development.

A consumer app

Booking, payment, tracking, messaging or notifications, with particular attention to adoption and stability on iOS and Android.

An app for field teams

Field service, logistics, after-sales service, sales force or inspections, often with offline operation.

An internal app

HR tools, communication and business apps for employees, connected to single sign-on (SSO).

Take over an existing app

Performance, user experience or technical debt, with an initial audit before deciding between fixes, gradual rework or a rebuild.

From work to deliverables

How the engagement unfolds.

User journeys are designed with their loading states, errors and any offline needs. We develop the app and its API exchanges, then check permissions and native features on the targeted devices. Preparing distribution includes configuration, the required accounts and pre-release checks.

What your team receives

  • User journeys and interfaces
  • App and integrations
  • Tests and deployment preparation

Product scoping

Objectives, users, user journeys, feature prioritization and technical constraints.

UX/UI design

Mockups, interactive prototype and design system suited to small-screen constraints.

App and backend development

Short sprints, regular demos, iOS, Android or cross-platform depending on the chosen strategy.

Quality and security

Tests, code reviews, build automation, authentication, role management and data encryption.

Release and maintenance

Publishing on the App Store and Google Play, MDM management if needed, crash monitoring, performance and roadmap updates.

The choices that matter

The points to decide with your team.

The choice between native development and a shared codebase depends on device features, the existing system and maintenance. A cross-platform app always requires testing on each operating system. Locally stored data and sync recovery must be planned from the design stage if work cannot stop when the network drops.

Native or cross-platform

Mobile app development technologies.

Cross-platform

Flutter and React Native for a shared iOS and Android codebase; React to share components with the web when relevant.

Native

Swift for iOS and Kotlin for Android, when performance or access to device features requires it.

Backend and APIs

Node.js, Python and TypeScript for services dedicated to mobile use.

Delivery and operations

Docker, GitHub and GitLab, mobile continuous integration all the way to the app stores, AWS or private cloud hosting.

See our Flutter, React Native, Swift and Kotlin expertise.

Hand-drawn interface sketches in a notebook

Mobile apps and AI

Useful AI features in your mobile app.

On mobile, AI often takes the form of a conversational assistant, natural language search, reading a photographed document or drafting a field service report. Model calls go through the backend, which applies the user’s access rights, logs exchanges and keeps costs under control. See our enterprise AI solutions and our AI agents connected to your tools.

How we work together

Preparing the first conversation.

You can walk us through how things work today, the users involved and the difficulties you face. The documents, examples and access required are specified afterwards, depending on the agreed scope. The first goal is to understand the work to be done and the dependencies that may affect how it unfolds.

A first version with a defined scope can be delivered as a fixed-price project; an app that evolves release after release is entrusted to a dedicated team led by a tech lead.

Frequently asked questions

Mobile apps: your questions.

Should you choose native or cross-platform development?

Cross-platform (Flutter, React Native) often suits an MVP or a simultaneous launch on iOS and Android with a controlled budget. Native is recommended when requirements for performance, experience or access to device features are high. The choice is made after analyzing the business and technical context.

How long does it take to develop a mobile app?

A mobile app MVP can usually be delivered in 6 to 10 weeks. A more complete app requires a structured schedule, iteration phases and thorough testing; the timeline depends on the scope and integrations.

How much does a custom mobile app cost?

It depends on the features, the targeted platforms, integrations with the information system and performance and security requirements. A reliable estimate requires scoping that specifies the scope, architecture and priorities.

Do you handle publishing on the App Store and Google Play?

Yes. We prepare the app, check its compliance with Apple’s and Google’s guidelines, manage versions and store listing assets, then follow the release and updates.

Can the app work offline?

Yes, depending on the use case. Data is stored locally and then synchronized when the connection returns, with conflict handling to preserve its integrity. This mode must be planned from the design stage.

Do you handle the backend?

Yes. APIs, databases, authentication and role management, back office and integrations with your ERP, CRM or business tools are built along with the app.

How does it differ from a no-code app?

No-code makes it possible to quickly test a simple idea using existing templates, but it remains limited in customization, performance and integrations. Custom development suits a strategic product or advanced technical constraints.

Can AI be integrated into a mobile app?

Yes. An assistant, search, document reading or summarization is served by the backend, which applies access rights, logs exchanges and tracks usage. We can also take over an AI prototype and put it into production.

Let’s talk about your project.

Tell us what you want to build, who the users are and what your technical environment looks like. Together, we will define the first scope to explore.

Book a 30-min call with a tech lead

What are you looking for?