Phones. Watches. Desktops. Web.
Less code.
Every screen.
We simplify building premium applications for Android, iOS, watchOS, Wear OS, Web, Windows, MacOS, and Linux by combining our experience, AI, and shared code where it makes sense. Native expertise where it matters.
con·ven·ic /kənˈvenɪk/
From convenient — software built around one principle: it should be effortless to use. The best products don't show their complexity. Today's tools make that standard achievable faster than ever.
Who are we?
Founded in Łódź, operating globally. Piotr built core systems for one of Poland's largest banks — high-throughput APIs, event-driven architecture, and the kind of reliability that can't afford to fail. Michał shipped iOS apps used by millions - social, loyalty, banking, medical, and e-commerce - combining technical precision with attention to detail and user experience.
Design
Passionate about the interface.
We put extraordinary attention into every pixel of the user interface. From micro-interactions to full design systems, we prototype and iterate until the experience feels effortless. Great software deserves a great UI — that's why UI/UX design and product design sit at the core of everything we ship.
Applications
Apps that feel native. Everywhere.
We craft high-performance cross-platform mobile and desktop applications that adapt to each platform's design language — Material for Android, Cupertino for iOS, glanceable for watches. Flutter for leverage, native Swift and Kotlin where it matters. Desktop and web covered. Or a single consistent look across all of them. No compromises either way.
Back-end
Scalable systems for serious business.
From high-throughput APIs to complex event-driven architectures, we design and build enterprise Java back-end systems and cloud services that handle millions of transactions. Battle-tested in banking and fintech. Ready for your scale.
Enterprise
Trusted where it matters most.
We have years of hands-on experience building core systems for one of the largest banks in Poland — where security is non-negotiable, uptime is measured in nines, and every line of code can affect millions of customers.
Years of hands-on experience building core systems for one of the country's largest banks — transaction processing, core banking, and compliance systems.
AI integration
RAG pipelines, document processing, predictive analytics, and LLM-powered features — integrated into your product or back-end, production-ready.
High availability
Fault-tolerant architectures with automated failover and real-time monitoring around the clock.
Systems we've built are trusted by over a million active users. We also build apps used by people around the world, across every time zone — always on, always reliable.
Regulatory compliance
GDPR, PSD2, and financial data handling best practices baked into every layer of the system.
Bank-grade security
End-to-end encryption, penetration-tested infrastructure, and SOC-2 aligned processes as standard.
Portfolio
See our work.
These are selected applications we can share publicly. Most of our work to date remains confidential due to client commitments, NDAs, and long-term delivery agreements.
Featured app
WeatherApp
Android · Wear OSA minimalist weather app that shows what matters — temperature, precipitation, wind and forecast — all on one screen. No ads. No distractions. Just weather.
- Clean hourly & daily forecasts
- Multi-city support with auto-location
- Home screen widgets for at-a-glance weather
- Dark mode optimized UI
- Wear OS companion app
- Built with Flutter
What users say
Who understand that less is more will have a blast with this weather app…
Super clean, smooth, visually stunning. An absolute must.
Featured app
Board Gamer
iOSA social app for board game enthusiasts — check in, build your collection, and discover nearby players who share your gaming interests. Message them and meet for a game.
- Build and manage your game collection
- Check in to be visible on the map for others
- Browse player profiles and their games
- In-app messaging to invite for a game
- Powered by Board Game Geek database
- Built with Swift
What users say
Seems like this is a good initial launch for the app but there's a lot more potential…
This app is simple and effective. I would recommend it to any board gamer.
Platforms
Built for every screen.
Your users are on phones, watches, laptops, and desktops. We meet them on all of them. We use Flutter and Java to share as much code as possible across platforms and systems — and where that's not possible, like watchOS or sometimes Web, we go fully native.
Mobile
Android
3B+ active devices. Flutter makes it practical to build Android and iOS apps from almost one shared codebase, while still feeling right on each platform.
iOS
1B+ iPhones. The same Flutter codebase can stay very close to native quality on iOS, with Cupertino patterns and the polished feel users expect.
Wearables
watchOS
Apple Watch is native-only here. Flutter doesn't officially target watchOS, so complications, workouts, and health-focused UX are built directly with Apple's stack.
NativeWear OS
Android-based watches can share logic and UI with Flutter where it makes sense, while more watch-specific surfaces may still need native Android integrations.
Desktop
Windows
Supported Flutter desktop target for native Windows apps, with MSIX distribution and deeper Win32 or Windows API integration through plugins and FFI where needed.
FluttermacOS
Supported Flutter desktop target for native macOS apps, including notarized distribution, App Store release paths, and Apple-specific capabilities managed through entitlements.
FlutterLinux
Supported Flutter desktop target for Linux apps, with GTK-based desktop tooling, native library access over FFI, and flexible distribution as bundles or Linux packages.
FlutterWeb & Back-end
Web
Modern web apps that can feel remarkably close to a polished native product, with responsive UI, strong performance, and app-like behaviour across desktop and mobile.
Server systems
High-throughput Java services, event-driven architectures with Apache Kafka, distributed processing pipelines. Years of production experience powering Poland's leading banking platform.
AI services
AI-powered features built into real interfaces: smart suggestions, contextual search, in-app copilots, and intelligent automations that users actually interact with — not just backend pipelines.
Ready to ship
Let's build something great.
Have a product to launch, redesign, or scale across platforms? We can shape it, build it, and make it feel sharp on every screen that matters.
One partner. Multiple screens.
From first idea to polished release.
Scope, architecture, and platform strategy before code starts spreading.
Interfaces refined for mobile, desktop, web, and the edge cases in between.
Flutter for leverage, native and Java where performance or platform fit demands it.