Moment

Inspiration

We wanted to build something that opens because something just happened - and closes the moment it plays out. A safety car comes out; a market opens. It goes back in; the market snaps shut. That window - the one no traditional platform can touch - is where it happens.

We believe your instinct - honed from years of watching, following, and obsessing - deserves a real outlet. Not a 48-hour parlay. A 60-second call.

Moment exists because every platform built before this one was designed to avoid that window. Too fast, too unpredictable, too hard to price. We leaned straight into it.

What It Does

Moment is a real-time micro-prediction platform where markets open and close around live events as they happen.

A live event occurs - a safety car in F1, a sudden price move in a stock. A market opens instantly with a clear yes/no question and a short submission window.

The pricing engine quotes a live probability at the moment you submit - earlier in = better odds
Market closes, event resolves, settles automatically
Real money in and out via Stripe

Sports: Markets are event-triggered - they only open when something happens. Each has a defined resolution condition and fixed time window.

Stocks: Markets open on a rolling basis - "Will AAPL be higher in 5 minutes?" - priced live at submission, settled against the real price at expiry.

How We Built It

React Native + Expo SDK 54 for cross-platform mobile development on iOS via Expo Go
TypeScript throughout for end-to-end type safety
Node.js + Fastify for a fast, lightweight backend -Socket.IO for real-time WebSocket communication
Stripe for seamless payments and payouts
pnpm workspaces for clean monorepo organization

Challenges We Ran Into

Literally everything...

Accomplishments That We're Proud Of

Built a real-time micro-prediction engine that opens, prices, and settles markets in seconds - triggered by live events as they unfold, not scheduled in advance.
Engineered a live probability pricing system that rewards speed: the earlier you submit your pick, the better the odds you lock in.
Integrated real money flow via Stripe with a frictionless under-10-second submission experience - from event trigger to confirmed pick.
Designed an event-detection layer that listens to live sports and market data feeds and instantly spawns contextually relevant prediction markets (safety car deploy → market open in milliseconds).

What We Learned

Learned to build with live data feeds and keep the UI in sync with events as they actually happen in real time.
Pricing logic was one of our biggest technical challenges - mapping time-of-entry to odds in a way that felt fair and actually worked required multiple approaches and a lot of testing before it clicked.
Grew a lot in how we collaborate under pressure - fast-moving, ambiguous builds revealed a lot about us as a team over the last 24-hours.

What's Next for Moment

Expand to more markets - more sports, live broadcasts, breaking news events (think live police chases, election nights, weather events)
Deploy the iOS app for a native, low-latency mobile experience
Integrate WebSockets with live broadcast feeds so markets trigger automatically from real events in real time
Develop prediction booster mechanics with dynamic pricing models that reward streaks and early conviction
Build a leaderboard and reputation system so the best predictors earn recognition over time
Scale the settlement engine to handle high volumes of concurrent markets without lag