Mobile app development
From UX/UI design to store release: we build iOS and Android apps and keep developing them after launch.
Services in: Mobile apps
iOS and Android apps
When an app must be as smooth as possible and use everything the phone offers, we build it natively, separately for each platform.
React Native apps
One codebase for iOS and Android. You reach users on both platforms faster, and maintenance is usually simpler and cheaper.
What we can do for you
UX/UI design
An interface users understand without instructions, in line with both platforms' guidelines.
iOS and Android apps
One or two platforms, native or cross-platform.
Backend and API
Server, push notifications, payments and integrations with your systems.
Release and maintenance
Preparation for the App Store and Google Play, updates and support.
About this service
Mobile app development covers UX/UI design, an iOS and Android app, backend and API, push notifications and publishing in the App Store and Google Play. Depending on the project we choose native apps in Swift and Kotlin or a cross-platform solution in React Native.
We treat a mobile app as part of a larger system: we connect it to the server, admin panel and other company services, and after launch we provide updates and support.
Why Cormo
Store know-how
We know what App Store and Google Play reviewers require and plan time for fixes.
One team for everything
App, server and admin panel from a single contractor.
Transparent process
Prototypes and test builds for review at every stage.
Technologies
- React Native
- Swift
- Kotlin
- TypeScript
- Node.js
- NestJS
- Laravel
- GraphQL
- Firebase
Experience you can rely on
We build mobile apps and prepare them for publication in the App Store and Google Play. We work in React Native and native technologies, and build the app together with its backend and admin panel.
Our work

Let’s go Eat! by Sodexo
Check your favorite Sodexo restaurant’s menu. Enjoy special discounts!

Cormo Mobile Guide
Mobile Guides. Explore with ease!
How we work
- 01
Meeting
We learn the business goal, the users and the project constraints.
- 02
Estimate
We settle the scope, a first estimate and a schedule.
- 03
Delivery
We design, build and test in short iterations.
- 04
Support
We deploy, monitor and evolve the solution after launch.
Estimate calculator
Estimate your project in 2 minutes
Answer a few questions and we will prepare a first estimate and send it to your email. No strings attached.
Frequently asked questions
What does mobile app development with you include?
It covers the full cycle: UX/UI design, an app for one or two platforms, a backend with an API, push notifications and payments, publishing to the App Store and Google Play, and further development. We can build natively in Swift and Kotlin or with React Native, depending on your needs. On the server side we work with Laravel, Node.js, Python and PostgreSQL. You own the code and documentation.
What is the process of building a mobile app and how long does it take?
We start with a workshop to set goals, users and key features. Then come UX/UI design, a first version (MVP), testing on devices and store publication. We work iteratively, so you regularly get working builds to try. Timing depends on the number of features, platforms and integrations, and on store review, which we do not control. We give a schedule after the analysis.
What drives the cost of a mobile app and how do you estimate it?
The biggest factors are the number of screens and features, the technology choice (native or cross-platform), the number of platforms, and the need for a backend, login, payments, offline mode and integrations with your systems. The level of interface polish matters too. We estimate from a feature description split into stages, and we often recommend starting with an MVP of key features and adding the rest once you see what users actually use.
How do you protect user data in the app and what does store publishing involve?
We protect data with encrypted API communication, secure authentication and limited permissions, and our working processes follow practices aligned with ISO/IEC 27001. We also prepare the required privacy descriptions and consents. For App Store and Google Play we guide you through developer accounts, materials and review. Stores can reject an app, so we plan time for fixes.
What happens to the app after release and who develops it?
After release we monitor errors and reviews, and since operating systems change requirements every year, an app needs updates. The code, designs and store accounts belong to you. We can keep developing features, fixing bugs and adapting the app to new iOS and Android versions under ongoing support. If you prefer your own team, we hand over documentation and project knowledge.
Get in touch
Tell us about your idea
Describe what you need. We will reply with a proposal for the next steps.


