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Personal · Mobile app · 2025

Ti Pari

A mobile app for friendly bets between friends — virtual tokens, no real money. You launch a bet, invite your friends, everyone stakes their tokens, loser pays winner. Simple, silly, pointable and shareable.

Flutter Dart Firebase Firestore Cloud Messaging
Challenge

Bet between friends without ever handling real money — and avoid the post-bet awkwardness of "who lost, who pays".

Approach

Flutter + Firebase + FCM for notifications. Virtual tokens, a designated judge settles the bet at the end, bet history and leaderboard between friends.

Outcome

Private beta within a friend group.

01Context

The bet, without the money

Among friends, we bet all the time — who arrives first, who finishes their plate, who guesses the score. No app covered this without drifting into sports betting or lotteries. Ti Pari holds the line: virtual tokens, no real money, no algorithmic odds, no designed addiction.

02What I built

A group, a bet, a judge

  • Bet creation — free-form title, two options (Yes/No or A/B), per-player stake, deadline, and a designated judge who rules at the end.
  • Friend invites — via Firestore, your contacts get a push, see the bet, pick their side, stake is locked until the deadline.
  • Token system — virtual tokens bought in-app or won from winning bets. Zero real-money conversion — it's just a pride counter.
  • Judge resolution — at the deadline, the judge picks the outcome, tokens get redistributed automatically via a Cloud Function.
  • History — past bets, winners, per-friend stats (how often you beat them, by how much).
03Design choices

Dark UI, light tone

Deep blue background, emerald green accent, gold for tokens — the "pocket casino" aesthetic, fully owned, but with copy that's deliberately silly ("Will Maxime finish his XXL burger?"). The goal is for every bet to make you laugh, not to make you win.

04Stack
FlutteriOS + Android
DartMain language
Firebase AuthEmail, Google Sign-In
FirestoreReal-time database
Cloud FunctionsBet resolution logic
FCMPush notifications