London · United Kingdom
GRINENKOANDCO LTD
A UK-based software development company specializing in the design, engineering and long-term support of mobile applications.
Focused on building mobile products people trust.
GRINENKOANDCO LTD is an independent software studio based in London. We work with founders and established teams to bring native iOS and Android products from an early concept to a shipped, supported release.
Our team covers the full mobile lifecycle — product discovery, interface design, native and cross-platform engineering, release management and ongoing maintenance. We build with a bias toward clarity, performance and long-term ownership of the codebase.
We take on a limited number of engagements each year, including selected projects in the financial technology space, so that every product we ship receives the attention it needs to succeed on the App Store and Google Play.
What we do
Three practices, one team — from the first prototype to the tenth release.
Mobile Development
Native iOS (Swift), Android (Kotlin) and cross-platform apps engineered for performance, offline reliability and long-term maintainability.
Product Design
Interface and interaction design that respects platform conventions — clear typography, honest hierarchy and accessible defaults.
Support & Maintenance
Release engineering, monitoring, SDK upgrades and store compliance so shipped products keep working across new OS versions.