# 確率ジェネ

> ガチャ・くじの当選確率を瞬時に計算

Canonical page: [https://chrome-stats.com/d/id6746195144](https://chrome-stats.com/d/id6746195144)

## Overview

- **ID:** `id6746195144`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** ryuichi hayashida
- **Category:** Utilities
- **Version:** 1.2
- **Last updated:** 2025-12-09
- **First published:** 2025-12-08
- **Size:** 37 MB
- **Data as of:** 2026-09-21
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/%E7%A2%BA%E7%8E%87%E3%82%B8%E3%82%A7%E3%83%8D/id6746195144)
- **Website:** [https://pro-cal.miryu-kamiya.com](https://pro-cal.miryu-kamiya.com/)
- **Privacy policy:** [https://pro-cal.miryu-kamiya.com/?lang=en#privacy-policy](https://pro-cal.miryu-kamiya.com/?lang=en#privacy-policy)

## Description

Confused about probabilities? “Probability Calc” quickly computes gacha and lottery odds using statistical models. Simple, fast, and ideal for game design and study.

"Probability Calc" is a tool that calculates chances in lotteries, gacha pulls, and draws using statistical models.
Main features
• Hypergeometric distribution: chance of drawing hits
• Cumulative binomial distribution: chance of k hits in n trials
• Simple input with instant results
Recommended uses
• Estimate gacha pulls needed
• Pack-opening hit simulation
• Campaign win-rate check
• Game design and learning
Privacy
No login needed. All data stays on your device. Ads are minimal.

## Rankings

- #2,290,081 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6746195144)