I'm Oleksandr Filyuk, designing mobile apps for Khmelnytskyi businesses for 15+ years. 130+ projects — from B2B catalogs for «7th kilometer» wholesalers to agritech solutions for Podillia farmers. Material Design 3, Apple HIG.
Fill out the form or give me a call
We'll discuss your project and find the best solution
Receive your finished app design with UI Kit and prototype
I design mobile apps for any platform and industry
Mobile app design following Apple Human Interface Guidelines with native iOS components.
Design following Google Material Design 3 guidelines adapted for the Android ecosystem.
Unified design for iOS and Android considering differences between both platforms.
UX/UI design for cloud services and business tools with complex interfaces.
Mobile store design with catalog, cart, payment and order tracking.
App design for messaging, communities or content platforms focused on engagement.
I study your audience, competitors, and business goals. I conduct UX research and create user personas.
I build the app structure, user flows, and navigation model. I define key usage scenarios.
I create schematic layouts for all screens. I test interaction logic before visual design begins.
I develop the visual style, design system, and detailed mockups for every app screen.
I create an interactive prototype for testing. I prepare specifications and assets for the development team.
Choose the optimal package for your project
10 screens
$1000$1200What's included:
30 screens
$3000$3600What's included:
50 screens
$5000$6000What's included:
50+ screens
$5000+$6000+What's included:
Cost will be calculated individually depending on your request.
Answers to the most popular questions
Cost depends on scope: number of screens, logic complexity, research needs. A simple business-card app with 8-12 screens — lower segment of my pricing. A medium app (e-commerce, ordering service, fitness tracker) with 25-40 screens and a design system — middle segment. A complex B2B product or SaaS with 60+ screens, custom features, integrations — custom quote. Free 30-minute consultation at the start — exact pricing after the brief.
Simple app — 3-4 weeks. Medium — 6-8 weeks. Complex B2B product — 2-4 months. Schedule: week 1 — UX research and CJM, weeks 2-3 — wireframes and information architecture, weeks 4-6 — UI design and design system, week 7+ — interactive prototype, testing, finals. I work in 1-week sprints, Figma demos weekly. This allows early course corrections without late rework.
I'm a UI/UX designer, I don't do development myself. But I work with vetted developers from the Khmelnytskyi IT Cluster who build apps on native platforms (Swift for iOS, Kotlin for Android) and cross-platform (Flutter, React Native). I can take the full cycle as a project manager — from design to publishing on App Store and Google Play. Or hand off the design to your team — Figma Dev Mode with tokens for Swift/Kotlin/Flutter makes this painless.
Depends on business goals. If audience is B2C in Ukraine, where Android dominates (~70%), and budget is limited — Flutter or React Native. If audience is premium B2C or export to US/EU, where iOS share is higher — native iOS+Android. If it's a B2B app for internal team (e.g., warehouse at the «7th kilometer» market) — cross-platform is enough, saves 30-40% budget. At the consultation I'll help you decide considering your audience and resources.
Yes, a design system is a mandatory artifact for any app with 15+ screens. It includes: tokens (colors, typography, spacing, shadows, corner radii), component library (buttons, fields, cards, modals, nav bars), typical patterns (lists, forms, onboarding), dark theme. I build on Material Design 3 principles for Android and Apple HIG for iOS, with a custom brand layer on top. Learn more on the mobile app design page.
Yes, every app of mine supports dark mode by default — not as «added later» but as part of the design system from the start. I define colors via tokens (e.g., surface-primary, text-primary) with two versions: light and dark. Dynamic Type on iOS and font scale on Android are also standard: text scales from 80% to 200% without breaking layout. This is part of WCAG 2.2 AA and Apple/Google platform requirements.
Yes, onboarding is critical for retention. The standard — 3-5 screens explaining key benefits (not features!), non-blocking, with skip option. I design push notifications by «less is more» principle: only valuable ones (new orders, reminders, behavior triggers), segmented by user behavior, with thoughtful tone and CTA. I integrate with systems like OneSignal, Firebase, Braze. This is part of a complete UX flow, not a separate service.
Yes, redesigns are 30% of my mobile projects. I start with an audit: analytics (Firebase Analytics, Amplitude), heatmaps, user interviews, competitor review. I identify weak UX points (where users get stuck, where churn happens), strong points (what to keep), new opportunities (features that add value). Often a redesign delivers 20-40% retention and conversion growth without ad spend. Best ROI — for apps with 1+ year in market and an active user base.
Yes, this is one of my niches. The «7th kilometer» wholesale market is hundreds of B2B operators working with dealers from across Ukraine and CIS. Specific apps are needed: catalogs with wholesale prices, ordering with size-grid selection (clothing, footwear), CRM and warehouse integration, manager chat, push notifications for new arrivals. I've designed 4 such apps. If you also need a web catalog — see web design in Khmelnytskyi.
Yes, the Podillia agrarian sector is a large and under-digitized niche. I've designed apps for farmers and agro-holdings: field tracking, equipment GPS monitoring, treatment journals, weather forecasts, exchange prices. The specifics — users aren't «digital», they work in the field (need large fonts, mistap protection, offline mode, simple onboarding). I often integrate with IoT devices and sensors via Bluetooth.
Yes, after final payment I hand over all files: Figma project with design system, prototype, specifications. I add developers to Figma Dev Mode — they see tokens, spacing, asset export in needed formats and sizes (1x, 2x, 3x for iOS; mdpi/hdpi/xhdpi/xxhdpi for Android). Economic rights to the design transfer to you per contract. If you also need branding — see logo design in Khmelnytskyi.
I live in Khmelnytskyi, so we can meet in person — at my office or yours. For remote clients — Zoom and Google Meet. Ongoing communication — Telegram or Slack. All edits and comments — directly in Figma on specific screens and components. Weekly — status update with video demo of interactive prototype. I'm available during Kyiv +2 work hours, responding within 2-4 hours on weekdays. Details on the service page.
Comparison with other options
| Me | Other agencies | |
|---|---|---|
| Platform guidelines | Material Design 3 + Apple HIG | Universal template |
| UX research | Interviews, CJM, IA map | Sloppy scenarios |
| Prototype | Interactive in Figma with animations | Static screens |
| Design system | Tokens, components, documentation | Separate screens |
| Accessibility | WCAG 2.2 AA + VoiceOver/TalkBack | Not considered |
| Developer handoff | Dev Mode, specs, video | PNG only |
I'm Oleksandr Filyuk — a UI/UX designer from Khmelnytskyi with 15+ years of practice and 130+ projects. During this time I've designed over 30 mobile applications — for businesses in the Khmelnytskyi region, other regions of Ukraine, and diaspora clients. A mobile app isn't a «website in a phone» but a separate product with its own logic: gestures, push, geo, camera, biometrics, offline mode. Each of these elements requires distinct thinking.
Khmelnytskyi is a city with an active IT community (Khmelnytskyi IT Cluster), a powerful B2B sector (the «7th kilometer» wholesale market), a developed Podillia agrarian segment, and significant consumer business («Epicenter», «Atrium» malls, networks of cafes, fitness, beauty). Each niche has its specifics for mobile design: a B2B wholesaler needs a catalog with wholesale prices and fast ordering; a farmer needs a simple field tool with offline mode; a cafe on Proskurivska needs a loyalty app with push and Apple Wallet/Google Wallet cards.
I design for three main variants: native iOS (Swift, SwiftUI), native Android (Kotlin, Jetpack Compose), cross-platform (Flutter or React Native). I follow Apple Human Interface Guidelines for iOS and Material Design 3 for Android. For cross-platform I create a hybrid design system: 80% shared components and 20% platform-specific (e.g., nav bars and modals differ between iOS and Android because users expect «their own»). For design I use Figma with plugins for mobile specifics: Mobile Mockups, Figma to Code, Stark for Accessibility.
The standard package includes 5 stages. Research: interviews with real users (5-8 respondents), Customer Journey Map, analysis of 5+ competitors in the Khmelnytskyi region and Ukraine, technical constraints. Architecture: screen map, navigation model (tab bar, drawer, bottom sheet), user flows for key scenarios. Wireframes: low-fi prototype in Figma, validation with you and users. UI design: design system with tokens, component library, final screens in light and dark themes, for all breakpoints (iPhone SE to Pro Max, Android compact to expanded). Handoff: interactive prototype, Figma Dev Mode, specifications, video walkthrough.
All my apps comply with WCAG 2.2 AA + Apple and Google platform standards. This means: 4.5:1+ contrast for text, touch targets minimum 44×44pt (iOS) / 48×48dp (Android), Dynamic Type support (font scaling 80-200%), VoiceOver (iOS) and TalkBack (Android), dark mode, UK/EN/PL localization with RTL support for future markets. Responsiveness — from iPhone SE (375pt) to Pro Max (430pt), from Android compact to expanded (Material You). All this is not «added later» but built into the design system from day one.
A separate layer of my work — B2B apps for «7th kilometer» market wholesalers. This is a specific audience: dealers, resellers, small entrepreneurs who buy clothing, footwear, textiles for thousands of UAH per visit. For them an app must be practical: catalog with wholesale prices and volume discounts, ordering with size-grid selection (S/M/L × quantities), CRM and warehouse integration, manager chat, push for new arrivals, order history. I often integrate with 1C or BAS, with mobile barcode scanners via camera. If you also need a web cabinet — see web design in Khmelnytskyi.
The Podillia agrarian sector is a large but under-digitized niche. I've designed apps for farms and agro-holdings: field tracking, GPS-based equipment monitoring, treatment journals, weather forecasts, exchange prices (Chicago, Kyiv), integration with weight scales and IoT sensors via Bluetooth. Key specifics — the user often isn't «digital» and works in the field: large fonts (minimum 16pt), mistap protection (confirmation for critical actions), offline mode (sync on reconnect), simple onboarding (without 10 tutorial screens). It's often a hybrid of mobile app and tablet version for the office. If you also need a logo — see logo design in Khmelnytskyi.
First step — free 30-minute consultation. We meet online or at my office in central Khmelnytskyi (near Soborna Square). I ask diagnostic questions, you tell about the product, audience, budget, timeline. At this consultation I give an honest assessment: whether you actually need a mobile app (sometimes a PWA is enough), which platform to choose, what the scope of work looks like. After — a detailed brief (1-2 hours), contract with fixed price and timeline, 50% prepayment, start. Learn more on the mobile app design page.