OddsBoy

Pass-and-play prediction game

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Friends, one phone, one prediction game. Results stay secret until everyone has picked. All agree? A contrarian CHANCE appears. Points are record-only — no real money. OddsBoy is a local score-calculation app for prediction games among friends. Pass a single iPhone around the group and enter your prediction privately, without others seeing. Score estimates and results stay hidden until everyone has finished. Points are a record-only score inside the app. They cannot be purchased, redeemed, or transferred. The app does not handle cash, redeemable points, prizes, or online wagering. Like a Mahjong score-keeping app, it is simply a tool for tracking points in friendly play. ■ Great for - "Who's going to win?" at parties and get-togethers - Predicting winners while watching sports or game tournaments - Light, friendly contests with family and friends ■ Features - Private predictions: pass one phone around and everyone picks secretly. Nothing shows until all are done - 2–4 options: not just "Team A / Team B" but draws or multiple choices too - Contrarian CHANCE: if everyone predicts the same, the round doesn't count. Next time the options no one picked get "CHANCE 10% DOWN," making contrarian picks easier - Split pool: a calculation style where larger entries don't lose out, settling only within matched amounts - Score updates and history: apply results to points and keep a record of each game and its breakdown - Fully local: no servers, no account, no internet needed. Data stays on your device - No ads / no tracking / no in-app purchases ■ Before you use The points and scores in this app are record-only numbers on your device. They have no monetary value and cannot be redeemed. They cannot be exchanged for cash, redeemable points, or prizes.

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The developer, Nobunori Kinami, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

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    Accessibility

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    Information

    Seller
    • Nobunori Kinami
    Size
    • 28.4 MB
    Category
    • Entertainment
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 4 more
    • English, French, Japanese, Korean, Spanish
    Age Rating
    4+
    Copyright
    • © 2026 Nobunori Kinami
  • Privacy Policy

    • More by Nobunori Kinami