Mobile app development
Services

Mobile app development

We build mobile apps with React Native and Expo — one codebase for iPhone and Android. Our FIX, Heal Fit, Avanta and ZapaziChas apps are published on the App Store. Alongside the app, we build the server and admin panel it runs on.

What you get

  • One codebase, two platforms

    React Native and Expo: one app for iOS and Android instead of two separate apps.

  • Backend and admin panel

    API, database and an admin panel for managing your content and users.

  • In-app payments

    Payments through Stripe, as in FIX, Avanta and ZapaziChas.

  • Notifications and reminders

    Push notifications and, when needed, SMS and email reminders, as in ZapaziChas.

  • Publishing to the app stores

    We prepare the listing and submit the app for review on the App Store and Google Play.

Clients we have worked with

  • Akbari Perfume House
  • Ministry of Innovation and Growth
  • Crypto.bg
  • Pelikan DTM
  • FIX Bulgaria
  • Vakarel
  • MysteryBet
  • Omega Light
  • National Elevator Company
  • Christian Center Sofia
  • ZapaziChas
  • UnitGold
  • AGA Transfer
  • KMP Build
  • modernoBG
  • Vida Luxe
  • Avanta
  • Baytown Machinery
  • Labimex
  • Unit.Estate
  • Elite Call Center
  • Camélia Désir
  • Videoto
  • Pro Structura
View projects
Portfolio

Mobile Apps

The whole portfolio
Fitness and health · 2026

KinetiX AI: fitness app with an AI coach

A mobile app that watches through the phone’s camera, counts reps and corrects your form by voice, in real time, without the video ever leaving the device. App, backend, admin panel and website built from scratch.

React NativeExpoTypeScript
Case study Live
Offroad Buddies - GPS app
Off-road and GPS · 2024

Offroad Buddies - GPS app

A social GPS platform for off-road enthusiasts — route recording, real-time tracking of group trips and offline maps.

React NativeExpoMapBox
Case study
Price

Mobile app development: how much does it cost?

€200-€15,000

Based on 98 of our quotes as of 14 August 2026

Our apps on the App Store

FIX connects customers with tradespeople: search, chat, payment and invoicing. Avanta is a live game with cash prizes, ZapaziChas offers online salon bookings, and Heal Fit provides video workouts in Bulgarian.

How we work

01

You describe the app

Who will use it and what should it be able to do.

02

Questions and price range

We ask about users, payments and data, then give you a price range.

03

Screen demo

We show the main screens with your content.

04

Written proposal

Exact price, screens, features and timeline.

05

Development and publishing

We test on real phones through TestFlight and publish to the app stores.

Frequently asked questions

Mobile app development: €200-€15,000. The exact price is included in the written proposal.

It depends on the scope, which we set out in the proposal. For comparison, here are examples from our portfolio: KinetiX AI: in progress, since 08.2026, FIX Bulgaria: 6 months, Avanta: 4 months.

Yours. The code and data are handed over with the project, and the app can be published from your App Store and Google Play accounts.

If you wish, we can maintain the project for €100-€350 per month. We specify what maintenance includes in the quote.

Yes. FIX, Avanta and ZapaziChas accept payments through Stripe, ZapaziChas sends SMS reminders, and Offroad Buddies records routes on MapBox maps.

Almost always — that is where the users, data and payments are. We build it together with the app or connect the app to your existing system.

Yes. With React Native, the code is shared, so the Android app does not have to be built from scratch.

More on this topic

How much does a mobile app cost

What determines the price of an app.

Related Services

Custom software development

Web systems, platforms and mobile apps built around your process, with code that belongs to you.

Custom ERP development

An ERP system built around your processes: inventory, sales, invoices, reports, and roles in one web-based system.

Website development

A company website built around your services: mobile version, enquiry form, SEO foundation and admin panel.

API integrations and software connectivity

We connect your website, store, ERP and CRM system with payment providers, couriers, telephony and notifications, so you don’t have to re-enter data.

What do you want us to build?

You describe the project, we come back with questions and a price range, then a demo and a written proposal.