Mobile apps
iOS and Android mobile app development
A successful mobile app is simple, fast and useful every day. We design and build iOS and Android apps with modern cross-platform technology, keeping costs down while delivering a near-native experience.
Mobile app development at a glance
A mobile app lives on your customers' or employees' phones and gives them direct access to your service, with notifications and, when needed, offline use. Vortech-X designs and builds iOS and Android apps, from the first mockup to publication on the App Store and Google Play.
We mainly work with cross-platform technologies, React Native and Flutter: a single codebase produces both apps, which shortens development and simplifies maintenance. Fully native development remains the right call for some very specific needs.
An app almost always relies on an API and an admin back office to manage users, content or orders. We build these components together with the app and hand over all the source code.
What we build
- React Native
- Flutter
- Expo
- TypeScript
- Firebase
- Node.js
- Laravel
iOS and Android apps
A cross-platform app published on the App Store and Google Play, with an interface that follows each platform's conventions.
Business and field apps
Data entry, job tracking, inventories or order taking, with offline mode and synchronization when the network returns.
E-commerce and loyalty apps
Catalog, cart, payment, loyalty cards and personalized offers, connected to your existing tools.
API and back office
Server, database and admin interface to manage users, content, orders and statistics.
Notifications and integrations
Targeted push notifications, Google or Apple sign-in, geolocation, camera, payment or maps, depending on your needs.
Publishing and maintenance
Store listing preparation, review follow-up, then updates for new iOS and Android versions.
The steps of your app project
- 01
Functional scoping
We define the users, the essential flows and the scope of a first version. You receive a detailed quote, free of charge.
- 02
Prototype
A clickable Figma prototype lets you test the screens with real users before development starts.
- 03
Architecture
Technology choice, design of the API, the database and third-party services: payment, notifications, maps.
- 04
Iterative development
Test builds install on your phones (TestFlight, Google Play internal testing) so you can follow progress and react early.
- 05
Publishing
Preparation of store listings, screenshots and copy, then follow-up of the Apple and Google review.
- 06
Improvements
Fixes, compatibility updates and new features, driven by your users' feedback.
Our approach
One codebase
React Native or Flutter: one app for iOS and Android, faster to ship and maintain.
Mobile-first UX
Short flows, comfortable touch targets, accessibility and offline mode when needed.
Guided release
We prepare store listings and screenshots and handle the review process.
Native or cross-platform (Flutter, React Native)?
The technology you choose affects your app's cost, timeline and maintenance.
| Criterion | Native (Swift, Kotlin) | Cross-platform (Flutter, React Native) |
|---|---|---|
| Codebase | One per platform | A single one for iOS and Android |
| Time and cost | Higher: two apps to build | Lower: most of the code is shared |
| Performance | Maximum, direct system access | Close to native for the vast majority of apps |
| Device features | Immediate access, including the latest ones | Broad access through modules, sometimes with native code |
| Maintenance | Two apps to evolve | One codebase to maintain |
| Best for | Games, video processing, hardware-heavy uses | Business apps, e-commerce, services, loyalty |
For most projects, a cross-platform app offers the best balance of cost, time and quality. Native development makes sense when the app depends heavily on graphics performance or very recent hardware features. We decide with you during scoping.
How much does a mobile app cost?
The price of an app depends first on its scope. We quote each project after a conversation, free of charge. These are the main factors.
Screens and flows
The number of screens and the complexity of user flows account for most of the design and development time.
Back office and API
An app connected to a server, with user accounts and administration, requires more development than a standalone app.
Integrations
Payment, maps, notifications, connection to existing software: each third-party service adds setup and testing.
Offline mode
Storing data on the phone and synchronizing it later requires additional logic.
Maintenance
Apple and Google release new operating system versions every year: plan a budget for updates.
Launching a focused first version (MVP), then expanding it based on user feedback, keeps the budget under control.
Get a free quoteFAQ
Frequently asked questions
Do I need separate apps for iOS and Android?
Not necessarily. With React Native or Flutter, one codebase covers both platforms. We only recommend fully native development when the project requires it.
Do you handle App Store and Google Play publishing?
Yes. We prepare the listings and follow the review process until your app is live.
Does my app need an admin back office?
In most cases, yes — to manage content, users or orders. We build it alongside the app.
How long does it take to build an app?
It depends on the number of screens, the back office and the integrations. We draw up a detailed schedule after scoping, included in the quote. We often recommend releasing a focused first version, then expanding it based on user feedback.
Who owns the app?
You do. The source code, the data and the Apple and Google developer accounts belong to you. We recommend creating the store accounts in your company's name, and we help you through the process.
Can you take over an existing app?
Yes, after auditing the code and architecture. Depending on its condition, we suggest evolving it, stabilizing it or, if it pays off in the long run, rebuilding it with current technology.
Can a website be turned into an app?
Yes, in several ways. A progressive web app (PWA) installs from the browser without going through the stores. A cross-platform app can also reuse your website's API. The right choice depends on which phone features you need.
Expertise
Ready to start your project?
A free, no-obligation 30-minute call to clarify your goals and the best approach.
Get a free quote