2 reviews
External Reviews
Technologies
Services
Notable Clients
KosmosKod is a two-person development studio based in Warsaw, Poland, founded by Marcin and Lukasz. The pair have over 10 years of combined experience building mobile, web, and desktop applications for small to medium-sized businesses. They work on fixed-price contracts and partner with external UX/UI designers when needed. The studio claims a 5/5 average rating across completed projects.
Services and capabilities
KosmosKod builds three categories of software. On mobile, they develop single-codebase apps for both Android and iOS. Their web applications are described as responsive and fast. Desktop work spans Windows, Linux, and macOS in a multi-platform setup. The studio lists four specialist areas: booking systems, content management, fintech, and audio streaming.
They expect projects to start with high-resolution interactive prototypes and a functionality list. If a client lacks these, KosmosKod will collaborate with design partners to build the UI/UX first.
The firm operates on a fixed total project cost model. Small projects (12k–50k EUR) run 1–3 months. Medium projects (50k–100k EUR) take 4–6 months. Large projects (100k–200k EUR) take 6–12 months. These prices are net; VAT is added per local law. The quoted costs exclude separate UX/UI and design services.
Notable work
Their recent projects include a REST API for The National Lottery's mobile app, a complete custom booking system for Rosa Venti (with Google Workspace integration and online payments), a high-frequency data collection and comparison module for Oddschecker, and a REST API with backoffice for MuchBetter. They also built Wolne Dźwięki, a multiplatform iOS and Android audiobooks app with online payments and Apple In-App Purchase support.
How they work
Engagement is fixed-price with biweekly demo presentations to keep clients informed. Marcin and Lukasz handle core development and bring in external UX/UI designers as needed. Communication and transparency are stressed; they say they don't hide difficulties.
Team and credentials
The studio is run by Marcin and Lukasz, two developers described as complementary. No formal certifications, partnerships, or awards are mentioned on the site. They speak Polish and English (implied by their client work).
Interested in working with KosmosKod?
Tell them about your project. No commitment, no fees.
The buyer’s weekly brief
Compare offshore teams before you request quotes
Get the free buyer guide PDF with pricing context, vendor questions, a printable scorecard, and a pilot checklist. Then get one practical hiring brief every Thursday.
Free. Confirm your email to join. One confirmation reminder, then no newsletter unless you opt in.
See what’s in the buyer guideCase Studies
KosmosKod hasn't published any case studies on Offshore.dev yet.
When they do, their project portfolio will appear here.
Client Reviews
Reviews from verified clients
2 third-party reviews
KosmosKod hasn't received any verified reviews on Offshore.dev yet.
Client reviews will appear here once they are submitted and verified.