Mobile App Development Company in Ukraine

Mobile app development at Marketing MIX covers the full cycle for iOS and Android: specification, UX/UI design, the app itself, the backend and admin panel, release to the App Store and Google Play, and support after launch.

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In short

We build iOS and Android apps for business: client apps, booking and loyalty apps, internal tools, MVPs for start-ups.
Work starts with a specification and a clickable prototype, so scope and cost are fixed before coding.
An MVP, the first working version of the app, takes up to 15 business days after the specification is approved; a larger product is released in stages.
We publish the app in the stores in your developer accounts, so you own the app and the code.
The studio is in Kyiv and works remotely with clients in Ukraine and abroad.

What is included in mobile app development

Discovery and specification. Goals, user roles, screens and integrations, written down as a specification you can take to any team.
UX/UI design. User flows, a clickable prototype in Figma and the final design following Apple Human Interface Guidelines and Material Design.
App development. Native iOS and Android or a cross-platform framework such as Flutter or React Native, with a Firebase or Laravel/Node.js backend; we recommend the approach after the specification.
Backend and admin panel. Server side, database, API and a web admin panel where your team manages content, users and orders.
Integrations. Payments, maps, push notifications, CRM, analytics (Firebase, GA4), sign-in with Apple or Google.
Testing. Manual testing on real devices of different sizes and OS versions before every release.
Store release. Store listings, screenshots and descriptions, review by Apple and Google, fixes if review asks for them.
Support and updates. Bug fixes, updates for new iOS and Android versions, new features by plan.

Native or cross-platform?

Native development (Swift for iOS, Kotlin for Android) gives full access to device features and is the choice for heavy graphics or complex hardware work. Cross-platform frameworks such as Flutter or React Native let one codebase serve both platforms, which usually saves time on typical business apps. We explain the trade-off for your case after the specification and put the chosen approach into the estimate.

If your audience already uses Telegram daily, a Telegram Mini App can be a faster first step before a full app.

How mobile app development goes

Brief and specification. We clarify goals, users and features and write the specification.
Prototype and design. You click through the prototype, then approve the final design.
Development in sprints. We build the app and backend and show a working build regularly.
Testing. We test on real devices and fix what we find.
Store release. We publish to the App Store and Google Play.
Support and growth. We fix issues, update the app and add features.

Mobile Application Development process: brief and specification, prototype and design, development in sprints, testing, store release, support and growth — How mobile app development goes

How long does it take to develop a mobile app?

A focused MVP with a few key screens takes up to 15 business days after the specification is approved and materials are received. A product with payments, several user roles and integrations takes longer and is better released in stages.

The timeline depends on the number of screens and roles, integrations with your systems, how quickly designs and builds are approved, and on App Store and Google Play review, which is outside our control. We give a timeline by stages after the specification.

What affects the cost of a mobile app

We estimate after the brief and specification, by stages. The main factors:

number of screens, user roles and features;
one platform or both, native or cross-platform;
backend complexity and integrations with CRM, payments and other systems;
design: based on standard components or fully custom;
support and development plan after release.

What we need from you

A description of the idea, the audience and the problem the app solves.
Examples of apps you like and why.
Apple Developer and Google Play Console accounts in your company name, or consent to help you create them.
One person on your side who approves each stage.

What you get

At the end of the project you own everything needed to run and develop the app:

the app in the App Store and Google Play in your developer accounts;
source code in your repository and access to the backend and admin panel;
analytics: installs, active users, key actions in Firebase or GA4;
documentation and a list of next steps for development.

Why an app needs a team under contract

An app is several jobs at once: design, two platforms, backend, testing, store review and updates. Common problems when these are split between freelancers:

the code is written on a personal account and the client cannot get it when the developer leaves;
no specification, so the budget grows with every new request;
the app is rejected by Apple review and nobody knows why;
no updates after launch, and the app breaks on a new OS version.

Working with a Kyiv team remotely

We work remotely with companies in the UK, the EU and North America: video calls, email, Telegram or WhatsApp, and shared documents for plans and reports. Kyiv is on UTC+2 (UTC+3 in summer), so our working day covers most of the UK and EU business day and the morning on the US East Coast. You get one project manager who is responsible for the timeline.

Why clients trust us

More than 10 years in digital. Marketing MIX has been building websites and running marketing for over a decade, with the portfolio to show for it.
Clients outside Ukraine. Our portfolio includes projects for KidSup and Cookiddoo in Canada and MBSoy, an architectural studio in Finland.
One team for the whole chain. Strategy, website, SEO, ads and analytics sit with one team, so nothing gets lost between contractors.
A registered, verifiable company. Our DUNS number is 68-606-2061 and our NCAGE code is A3G3J; both can be checked in the Dun & Bradstreet and NATO NCAGE databases.
A real office in Kyiv. The studio is at 77 Velyka Vasylkivska St., Kyiv, and works remotely with clients in Ukraine and abroad.

FAQ

How much does mobile app development cost?

The cost depends on features, number of screens, integrations and platforms. After a brief we prepare an estimate by stages.

How long does development take?

An MVP takes up to 15 business days after the specification is approved. For a complex product with integrations we set the timeline after the specification and release it in stages.