Expo x STRV: Hackathon Prague 2026

Build a real app for a real business. In one day. Expo is coming to Prague and joining forces with STRV to host a hackathon focused on one thing: building something real. No throwaway demos. No fake startups. Pick a business you actually care about (your favorite coffee shop, a local brewery, your own company) and build them an app. By the end of the day, you'll ship something to the App Store. Limited to 20 curated teams and whatever you can ship by 5 PM. What You'll Build Every team must: Build a mobile app using the Expo stackSolve a real problem for a real business you care aboutChoose a business that doesn't already have a mobile app (or has something outdated that needs replacing) Examples: Coffee shop ordering and loyalty. Brewery membership or events. An internal tool for your team at work. Goal: Take an idea and make it real in one day. Tools and Workflow This is about showing how modern app development actually works. Recommended flow: Start with Expo Agent to scaffold your appPull the code and iterate using Claude Code and the Expo MCP stackUse Expo for the last mile: build, deploy, update, ship What you'll have access to: Expo and STRV engineers on-site for supportFull Expo toolchainClaude Code creditsHelp getting your app to TestFlight We provide the workspace, the experts and the tools. You bring the idea. Run of the Show (Friday, 1 May) 09:00 Kickoff and team formation10:00 Build17:00 Submit demo video (code freeze)17:00 - 18:00 Judges review submissions18:00 Top 5 teams: live demos19:00 Winners and networking drinks Judging Criteria We're looking for things that should exist in the world. 1. Realness: Is this a real business? Do you clearly understand the problem? 2. Product Quality: Is it intuitive and well-designed? Does it feel like a real product? Did you use native modules? 3. Technical Execution: Good use of the Expo stack. Clean and thoughtful implementation. 4. Shipability: Is it on TestFlight or close? Can you hand this to a business owner and have them use it tomorrow? Constraints and Guardrails Must use ExpoMust build for a real business without an existing appMust build during the hackathon windowMust submit a demo video (3 minutes max) and a working app Advice Keep scope tightFocus on one core workflowBuild something that could actually ship Prizes No cash. Only things that matter. Top Teams: Trophy and certificate$10,000 in Expo credits for the yearTickets to App.js ConfPrivate session with Expo and STRV senior engineersFeatured on Expo's blog and social channels All Participants: Expo swagFree Expo Production account for one year Registration This event is curated. We're selecting 20 teams (1 to 3 people). In your application, include: Project idea: What are you building and for which business?Why this business: Why do you care about it? Why do they need an app?Your team: Who's on it? (LinkedIn profiles required) Expo exists to help people take ideas and make them real. This hackathon is about doing that for something you actually care about. Not a fake startup. Not a demo project. A real business in your world. Start with an idea. Build the app. Make it real. - Expo and STRV ​By taking part in this event, you grant the event organizers full rights to the use of images resulting from the photography/video filming, and any reproductions or adaptations of the images for fundraising, publicity or other purposes. This might include (but is not limited to): the right to use them in printed and online publicity, social media and press releases. ​If you do not wish to be photographed, please inform an event organizer during check-in.