Martynas Prascevicius
Freelance Full-Stack Developer in London — iOS, Android & Web
I build production-ready iOS & Android apps, websites, APIs, and internal tools for businesses and startups.
From cross-platform mobile apps (Flutter, Swift, Kotlin) to web platforms and backend APIs — practical, modern, reliable.
// App, Web & Backend Development
iOS & Android Apps
Cross-platform Flutter apps for App Store + Google Play, or native iOS (Swift / SwiftUI) and Android (Kotlin) when the project needs platform-specific depth.
Web Platforms
Business websites, SaaS-style platforms, dashboards, landing pages, and customer-facing web apps.
Backend Systems
Secure APIs, authentication, databases, admin tools, automation, and deployment on Linux cloud infrastructure.
MVPs for Startups
From idea to a live product on the App Store, Google Play, or your own URL — planning, design, development, deployment, and post-launch iteration.
Selected Work
CombiFitTrack
A multi-source heart rate tracking app for iPhone and Apple Watch, built with SwiftUI and HealthKit. Includes Dynamic Island support, wearable integration, workout tracking, and historical session analysis.
App StoreNutriTrack + AI
An AI-powered nutrition tracking app with barcode scanning, food analysis, HealthKit integration, and a modern SwiftUI interface focused on practical daily use.
App StoreUniversal Video Transcriber
A transcription-focused app that converts audio and video into usable text with AI support, designed for fast and practical content processing workflows.
App StoreFairness-First Shift Scheduling
Two apps, one fairness-guaranteed scheduler
A constraint-optimised holiday booking system for shift-based businesses. Staff see a green / amber / red availability hint before they request, and the underlying solver guarantees mathematical fairness across the whole team. Built end-to-end — iOS staff app, iPad manager app, Rust API, Python OR-Tools solver — and validated with a 15-participant user study.
Live & In Development
MPCODE
// Independent Software Practice
MPCODE is the independent software development practice of Martynas Prascevicius, a freelance app and web developer based in London, working with founders and small businesses across the UK and Lithuania. I build production-ready apps, websites, backend APIs, and internal systems for businesses and startups.
My work covers the full product path — planning, interface design, backend development, deployment, and ongoing improvement. The goal is always practical software that is clean, reliable, secure, and easy to use, and that can actually ship.
// Core Stack
Frequently Asked Questions
Do you build apps for both iOS and Android?
Yes. Two routes: cross-platform with Flutter (one codebase, both stores — used recently for gfverified.com), or native iOS in Swift/SwiftUI and native Android in Kotlin when the project needs platform-specific depth. I handle the full pipeline: design, implementation, App Store and Google Play submission, and post-launch updates. Typical MVP timeline is 4–10 weeks.
Can you build a website and backend for my business?
Yes. I deliver full-stack web platforms — Laravel / PHP / Filament admin or Rust / Node APIs, with MySQL or PostgreSQL, deployed on your infrastructure or a managed VPS. Recent live work includes gfverified.com and manogimine.lt.
Do you work with founders directly or only through agencies?
Direct. mpcode.dev is an independent practice — you work with the developer building your product, not an account manager. No agency overhead, no hand-offs.
Where are you based and do you take remote clients?
Based in London, UK. I take clients from anywhere — most work is remote. UK and EU time zones are easiest for live calls; async-first delivery for everyone else.
What stack do you use?
Mobile native: Swift / SwiftUI / SwiftData (iOS), Kotlin / Jetpack Compose (Android). Mobile cross-platform: Flutter / Dart for shared iOS + Android codebases. Web: Laravel 13, PHP 8.5, Filament, MySQL. Backend: Rust (Axum), Node.js. Maps: Mapbox / MapLibre. 3D / AR: model-viewer with GLB / USDZ.
How do I get a quote?
Use the contact form on mpcode.dev or email [email protected] with a short brief — what you want built, who it's for, and any rough timeline. I reply within one working day with a scope estimate.
Start a Project
Need an app, website, backend system, or custom platform? Send a short message and I'll get back to you.