Elypsum

Elypsum is a product engineering studio based in Medzev, Slovakia. It builds custom web apps, mobile apps and websites end to end, working in weekly milestones against a fixed-price scope document with acceptance checks agreed before development starts. Bugs in delivered work are fixed free for 12 months, and an optional Care Plan covers hosting, monitoring and maintenance.

The studio targets founders and startups without an in-house engineering team. Revenue comes from scoping fees (EUR 1,000-5,000), fixed-price builds (EUR 5,000-30,000, larger builds quoted individually) and monthly Care Plan subscriptions from EUR 250 per month. The website lists three example projects: Evently, a mobile event platform, a data intelligence platform, and a niche e-commerce marketplace.

The company was founded on 14 February 2025 and is registered as Elypsum s. r. o. with its address in Medzev, Slovakia. The website names Kristián Müller as founder and says the company serves clients worldwide. The website does not list other offices or open roles.

Product: Custom software development on a fixed-price, milestone-based model with a 12-month warranty and an optional Care Plan for hosting and maintenance.