NextOutcome
Polymarket, built native for iOS — live order books, prediction markets, and a 3D World Cup globe.
Screenshots
Challenge
Polymarket only exists as a web app — prediction market traders had no native iOS client for browsing live markets, watching order books move in real time, or following live sports and World Cup odds.
Solution
Built a Clean Architecture (Domain/Data/Presentation) + MVVM app in vertical feature slices, streaming live order books and sports stats over WebSocket with automatic reconnect/back-off, a World Cup hub with a draggable SceneKit 3D globe of nation odds, and a watch-only portfolio tracker with zero wallet keys or custody.
Result
In active development: markets feed, search, event detail with live charts, live order books, live sports/World Cup hub, and watch-only portfolio tracking are all shipped; on-chain trading via a vetted signer + backend proxy is next on the roadmap.
Built with
- Swift
- SwiftUI
- Swift Charts
- SceneKit
- Swift Concurrency
- @Observable
- URLSession
- Keychain
- SPM