Software Mansion

Software Mansion is a Poland-based software consultancy founded in 2011 with 375+ engineers. The company has positioned itself as a significant force in open-source React Native development—it's a founding member of the React Foundation and maintains several widely-used libraries including Reanimated and Fishjam. Beyond React Native, Software Mansion builds full-stack web applications, works with Elixir on the backend and browser, handles real-time multimedia systems, and develops on-device AI solutions. The firm has shipped 30+ open-source products and libraries since its founding.

Services and capabilities

Software Mansion offers custom software development across six primary domains. Its React Native work spans mobile app development, performance optimization, and cross-platform feature parity—demonstrated in projects where it cut Android app launch time by 60% and reduced audio preload from 10 seconds to 1.5 seconds. The firm also maintains close ties to the Expo ecosystem, contributing over 2,500 pull requests since 2017.

On the web side, the company builds full-stack applications using React and TypeScript. Its Elixir practice focuses on backend systems and browser-based Elixir via its open-source Popcorn tool. The multimedia and real-time communication work includes video streaming with sub-frame latency (via Smelter, its React-based video composition tool) and WebRTC integrations. For AI, the company works with PyTorch models in React Native through React Native ExecuTorch and builds agent frameworks. Platform engineering services cover infrastructure, DevOps, and system scaling.

Notable work

Partiful, an event-planning app, won Google Play's Best App of 2024 and App of the Day on the App Store. Software Mansion upgraded the Android version, added Live Activity notifications for iOS, created App Clips, rebuilt blur effects and transparent video playback natively for Android, and refactored the app's data architecture to reduce re-renders. The app now has a 4.9 rating on Google Play and 5.0 on App Store; it was named one of 26 apps for 2026 by Apple.

Moxie, a medspa management platform, saw 10x client growth after Software Mansion built the full-stack application using Python, React, and TypeScript. The platform has achieved 99.85% stability and the firm continues maintaining it and adding features. SeaPeople, a boating community app, had its Android performance optimized and achieved a 99% crash-free rate in three months. Turn.io, a public benefit corporation messaging platform, received real-time audio, live transcriptions, and AI assistant features built with Elixir and WebRTC. Dscout, a user research platform, had its admin panel migrated from Ruby to Elixir and its video research tool refined. Filament, an invite-only networking app, saw its Android launch time cut by around 60% and received a custom rich text editor for React Native.