PredictPark

PredictPark turns crypto prediction markets into an engaging, addictive game by combining a swipe-based interface with the financial power of PolyMarket's infrastructure. Instead of complex trading dashboards, users are presented with cryptocurrency price predictions one at a time—swipe up if you think the price will rise, swipe down if you believe it will fall.

Built directly on PolyMarket, PredictPark leverages proven prediction market mechanics where users stake real money on their forecasts. When you swipe, you're taking a position in an actual market. Correct predictions earn you money based on market odds, while incorrect ones cost you your stake. This creates real financial incentives for accurate forecasting.

The innovation lies in the UX: by distilling complex market data into bite-sized, swipeable decisions, PredictPark makes prediction markets accessible to mainstream users who find traditional platforms intimidating. Each card displays essential information—current price, timeframe, market volume—allowing quick, informed decisions without overwhelming charts.

This gamification approach doesn't sacrifice sophistication. Users build prediction streaks, compete on leaderboards, and develop their forecasting skills through immediate feedback. By making prediction markets feel like a mobile game while maintaining real financial stakes, PredictPark opens up decentralized forecasting to millions of new participants who want to profit from their crypto market insights.

Stack:

Mobile: React Native + Expo, Hammer.js swipes, Lottie animations Backend: Node/Express + GraphQL proxying PolyMarket’s subgraph Chain: Polygon, Web3.js + Ethers, WalletConnect v2 Data: CoinGecko prices, The Graph for market indexing, Firebase for live leaderboards

Key hack: PolyMarket doesn’t do tiny bets well, so I deployed an ERC-4626 wrapper vault that aggregates micro-stakes into proper market positions. Saves ~30% gas and lets users swipe with $1.