Mobile App Development in Chernihiv — iOS, Android, Flutter
I'm Oleksandr Filyuk — 15+ years and 130+ products. I build mobile apps in Chernihiv: B2C retail, B2B for the agricultural sector, and enterprise apps for manufacturers in Desnianskyi and Novozavodskyi districts.
25+Mobile apps launched
15+Years of experience
4.8Average App Store rating
100+Satisfied clients worldwide
Leave a request
Tell me about your app idea, target audience, and platforms (iOS, Android, or both).
Free consultation
We'll discuss features, tech stack, timeline, and App Store / Google Play launch strategy.
Get your app
A ready mobile app published in stores with analytics and push notifications configured.
Types of Mobile Apps
I develop mobile apps for any platform and business need
🍎
iOS App (Swift)
I build native iOS applications in Swift with flawless UX and full Apple ecosystem integration.
🤖
Android App (Kotlin)
I create native Android applications in Kotlin with Material Design optimized for diverse devices.
🔄
Cross-platform App (React Native)
I develop cross-platform apps with React Native — one codebase for iOS and Android with native performance.
🌐
PWA App
I build Progressive Web Apps that work offline, install like native apps, and load instantly.
🏢
Enterprise App
I design and develop complex enterprise mobile solutions to automate business processes.
🚀
MVP App
I rapidly build minimum viable products to validate business ideas and attract investment.
Work Process
1
Analysis & Discovery
I research the target audience, competitors, and business requirements. I form a technical specification and define key app features.
2
UX Design
I create wireframes, user flows, and interactive prototypes. I test usability with real users.
3
UI Design
I develop visual design following platform guidelines. I create a design system and all app screens.
4
Development
I code the app with clean architecture, write tests, and integrate with backend and APIs.
5
Testing & QA
I conduct comprehensive testing on various devices, fix bugs, and optimize performance.
6
Publishing & Support
I publish the app to stores, set up analytics, and provide ongoing support and updates.
Pricing
Choose the optimal package for your project
Starter
MVP App
10 screens
$1000$1200What's included:
- Design and development of 10 screens
- iOS or Android
- UI Kit components
- Interactive prototype
App ready in 7 days
Basic
Standard App
30 screens
$3000$3600What's included:
- Design and development of 30 screens
- iOS or Android
- UI Kit components
- Interactive prototype
- UX research
App ready in 3 weeks
Business
Pro App
50 screens
$5000$6000What's included:
- Design and development of 50 screens
- iOS or Android
- Design system
- Interactive prototype
- UX research
- Animations and micro-interactions
App ready in 1 month
Premium
Premium App
50+ screens
$5000+$6000+What's included:
- Design and development of 50+ screens
- iOS or Android
- Full design system
- In-depth UX research
- UX strategy and User Flow
- Interactive prototype
- Animations and micro-interactions
- Usability testing
- Personal project manager
- Priority support after delivery
Individual timelines
Cost will be calculated individually depending on your request.
Frequently Asked Questions
Answers to the most popular questions
It depends on the product and the team. For a B2C app for regional retail with simple screens that needs fast iOS and Android delivery — Flutter or React Native + Expo save 30-40% of the budget. For games, AR, complex 3D, or deep camera/sensor integration — native only (Swift + Kotlin). If you already have a React web team — React Native lowers the threshold logically. In our meeting I ask 5-7 control questions and give an honest recommendation rather than "selling" what I'm used to.
A standard B2C MVP on Flutter (5-8 key screens, auth, core scenario, baseline analytics) — 8-12 weeks from brief to store release. A corporate B2B app integrated with your CRM/ERP — 12-18 weeks. A complex product with custom backend, chat, payments, and push — 16-24 weeks. I always recommend launching the MVP on one platform first (e.g. Android dominates in Ukraine), gathering real feedback, and only then completing iOS.
Yes — this is a critical scenario for us. I implement an offline-first architecture: local database (SQLite, Realm, Hive) and sync with the backend when network is available. All key actions — creating a document, taking a photo, capturing a GPS point — work offline. For agricultural apps this is mandatory: an agronomist 50 km from Chernihiv shouldn't depend on 3G/LTE. For B2C we cache the catalog, order history, profile. The user sees data instantly and doesn't get frustrated.
Ballpark figures: a simple MVP on Flutter — 8,000 to 15,000 USD. A serious B2C app with custom backend, auth, payments, and chat — 18,000 to 45,000 USD. A corporate B2B app with deep ERP integration, offline mode, and roles — 25,000 to 60,000 USD. Complex native solutions with AR/ML — from 50,000 USD. Exact pricing comes after a free scoping in 2-3 business days. I split projects into 4-6 week phases — you pay for results.
I take this process end-to-end. I register Apple Developer (99 USD/year) and Google Play Console (25 USD one-off) accounts in your company name. I prepare all assets: icons, screenshots in all sizes, EN/UK descriptions, ASO keywords, privacy policy, age rating. I pass the first Apple and Google reviews — which can be picky. I set up CI/CD (Fastlane, Codemagic) for automatic releases of new versions. After launch, I monitor crashes through Firebase Crashlytics and ship fixes.
Via API. If your CRM/ERP already exposes REST or GraphQL — I connect directly. If not — I build a Node.js or Go middleware that acts as a gateway between the mobile app and your systems (1C, BAS, Bitrix24, RetailCRM, Salesforce). The middleware handles caching, error handling, auth, and audit logging. This gives two benefits: the app doesn't "crash" when your ERP is in maintenance, and you can replace the backend system without rewriting the mobile client.
Day-one stack I install: Firebase Cloud Messaging for push, Firebase Analytics + GA4 for events, Firebase Remote Config for A/B tests and feature flags, Crashlytics for crashes, Performance Monitoring for speed. All key events (registration, first payment, key screen open) are logged from the start — not "later". This gives you real data from the app's first week, not guesses. When deeper product analytics is needed, I add Mixpanel or Amplitude.
TLS 1.3 for all network traffic, certificate pinning to prevent man-in-the-middle, encrypted local DB (SQLCipher, Realm encryption). Payments — only via PCI DSS-certified gateways: Stripe, LiqPay, Fondy, WayForPay, Apple Pay, Google Pay. I never store card numbers in your backend — tokens only. For biometrics — Face ID / Touch ID (iOS) and BiometricPrompt (Android). For GDPR — consents, data export, one-click account deletion. Everything documented in a security policy.
Yes — this is one of my key regional verticals. For retail chains and restaurants I build B2C apps with catalog, cart, delivery, loyalty program, and push notifications about promotions. For HoReCa around Heroes' Alley and Krasna Square — apps with table booking, pre-orders, payments, and digital menus (including QR-menus that speed up service). I integrate with your POS, warehouse, and suppliers. After launch I help with ASO and the first 10,000 users.
Yes — a strong fit for the region. For agronomists: field walks with GPS markers, photos of crop conditions, NDVI maps from satellite data, notes per crop, sync with the farm's accounting system. All offline. For logisticians: fuel-card tracking, combine and truck routing, fuel-drainage control via GPS-tracker integration, electronic waybills. For the farm director — a dashboard with all this data in real time. Backend — Node.js + PostgreSQL with PostGIS for geo-data.
Yes. For woodworking, food, textile, and machine-building plants I build enterprise apps for shift supervisors, QC, warehouse, and forklift drivers. Scenarios: shift handover, defect logging with photo, quality checks, material issuance, inter-shop movements, label printing via Bluetooth printer. All offline with sync to ERP. This eliminates paper logs, speeds up shifts by 15-25%, and gives the director an instant production picture. More on system orchestration in CRM, ERP, SaaS in Chernihiv.
A mobile app almost never lives alone — it's reinforced by: branding (icon, splash, consistent visual style across screens), serious UX/UI (no templates — real prototypes and user testing), a landing page for App Store / Google Play, App Store marketing (ASO), and Google Play marketing. If your app works with CRM or ERP data — sync must be two-way and reliable; this requires a thoughtful backend: mobile development. An app without backend is just a pretty screen.
Why choose me?
Comparison with other options
| Filyuk — Mobile Development in Chernihiv | Typical Mobile Studio | |
|---|---|---|
Mobile App Development in Chernihiv — Oleksandr Filyuk
Why Mobile Development in Chernihiv Is a Discipline of Its Own
Chernihiv is neither Kyiv nor Lviv. A regional capital on the Desna with around 285,000 residents, where two parallel worlds coexist. The first — traditional business: woodworking plants in Novozavodskyi district, food industry, textile and machine-building factories, musical instrument makers, historical-tourism hotels around the Chernihiv Citadel, Boldyna Hora and Kotsiubynskyi Park, agricultural farms across the region. The second — a young IT scene around Chernihiv IT Cluster, ChNTU and ChNPU named after Shevchenko. I'm Oleksandr Filyuk, 15+ years in mobile development, 130+ products launched, and the most interesting mobile solutions emerge precisely at the intersection of these two worlds.
What sets work in Chernihiv apart from the capital — speed and honesty. Budgets are weighed more carefully here, mistakes are not forgiven, but once a client trusts you, they'll mention it at ChNTU, at Chernihiv IT Cluster, and to every industry partner. So I build every app as if it were a business card for my work in the region. No template solutions, no "savings" on testing, no "we'll fix it later".
Tech Stack: Flutter, React Native, Native iOS/Android
I don't stick to one technology for ideological reasons. Every project is a separate decision. Flutter (Dart) — my main tool for B2C apps and MVPs that need one codebase for iOS and Android, fast start, and a smooth UI with custom components. Budget savings versus native — 30-40%; time-to-market — 25-35% shorter. Flutter has proven its maturity and is used by Google, Alibaba, BMW, Toyota.
React Native + Expo — when you already have a React web team. The mobile app becomes a natural extension of existing skills; you can hire developers from ChNTU and ChNPU named after Shevchenko who already know React and onboard them quickly. Expo additionally simplifies releases via EAS Build and EAS Submit.
Native development — Swift for iOS, Kotlin for Android — where cross-platform falls short. This is AR (ARKit, ARCore), complex 3D, heavy camera work (computer vision, on-device ML via Core ML / ML Kit), deep BLE, NFC, HealthKit integrations. In such cases I build two codebases, but the outcome justifies it.
B2C Apps for Regional Retail and HoReCa
One of the strongest demand segments in Chernihiv — mobile apps for retail chains, e-commerce, restaurants, and delivery. Typical functionality: product catalog with fast search and filters, cart and checkout, profile, order history, loyalty program with bonuses and QR code, push notifications for promotions and new arrivals, support chat, real-time delivery tracking via Nova Poshta or your own fleet.
Payments — Apple Pay, Google Pay, LiqPay, Fondy, WayForPay, Stripe for foreign cards. Analytics — Firebase + GA4 + Mixpanel or Amplitude for product cohorts. ASO — App Store and Google Play page optimization, keywords in Ukrainian and English, screenshots, video previews. I test the app on real devices in different network conditions: 4G, slow 3G in villages around Chernihiv, Wi-Fi in cafes on Heroes' Alley.
B2B Solutions for Agriculture and Manufacturing
Mobile apps for agricultural farms in Chernihiv region are a world of their own. An agronomist spends the day in fields 30-70 km from the regional capital where LTE can be unstable. All actions — photo documentation of crop condition, GPS markers for problem plots, notes per crop, NDVI satellite map integration — must work offline and sync later. I build such apps on Flutter or React Native with local DB (SQLite, Realm) and a custom conflict-aware sync protocol.
For Novozavodskyi district manufacturers — enterprise apps for shift supervisors, QC, warehouse, forklift drivers. Shift handover, defect logging with photo, material issuance with barcode scan, label printing via Bluetooth printer, quality checks against checklists. Deep ERP integration (1C, BAS, custom system) via API and a custom middleware. The result — paper logs disappear, the director sees production in real time, shifts speed up by 15-25%.
SaaS Apps and Products for the Global Market
Young teams from Chernihiv IT Cluster increasingly build global SaaS where the mobile client is a critical channel. I help technically: technology selection, multi-tenant architecture design, backend integration on Node.js + PostgreSQL or Firebase, Stripe for global billing, GDPR compliance (user data export, one-click account deletion, clear consent flows), SSO via Google and Microsoft.
At the product level — onboarding, analytics event model, A/B tests via Firebase Remote Config, localization (at minimum EN, UK, PL, DE for EU entry), store marketing. We often launch beta via TestFlight (iOS) and Internal Testing (Android), gather feedback from 50-200 early users, iterate, and only then go public.
How I Work With Chernihiv Teams — From MVP to v2.0
Step one — free scoping. I meet you in person in your office on Mahistratska, near Krasna Square, or online, listen to the idea, ask control questions, and prepare a scope document within 2-3 business days. The document includes recommended technology, weeks per phase, risks, what to ship in MVP and what to defer to v1.1.
Then 4-6 week phases. Each phase has clear goals, an end-of-phase demo, and milestone-based payment. You never pay for "process" — only for working code in the repository. I run the project in git, infrastructure in Terraform or Firebase Console with documentation, design in shared Figma. Your team (including developer-graduates from ChNTU or ChNPU named after Shevchenko) gets full access from day one.
After App Store and Google Play release — 12 months of SLA support: fast critical bug fixes (4-24 hours), updates for new iOS and Android versions, crash monitoring via Firebase Crashlytics, monthly metric reports. If you want to discuss your mobile idea — message me, and I'll prepare a preliminary estimate for free.