Gacha Calc: Probability Sim

Gacha Calc: Probability Sim

Calculate Gacha Odds & Costs

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Free
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Details

  • Released
  • Updated
  • December 8, 2025
  • March 17, 2026

Features

Gacha Calc: Probability Sim screenshot #1 for iPhone
Gacha Calc: Probability Sim screenshot #2 for iPhone
Gacha Calc: Probability Sim screenshot #3 for iPhone
Gacha Calc: Probability Sim screenshot #4 for iPhone
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About

Are you a fan of in-game gacha draws, opening your wallet based solely on the hope of "This time, it has to drop"? The [Gacha Calc: Probability Sim] is your essential tool, helping you predict spending and make smarter drawing plans based on mathematical probability, not just intuition. Key Features - Accurate Probability Calculation (Independent Trials): Simply enter the item's drop rate (%) and your desired number of attempts. The app instantly calculates the "Probability of acquiring at least one item." - Predictive Table: We provide an easy-to-read table showing the minimum number of attempts and the estimated cost required to reach your target probability milestones (e.g., 50%, 90% success rate). - History Tracking: Conveniently save your calculation results and check your simulation data anytime in the history log, allowing you to track your past strategies. - Clean UI/UX: The app offers a simple, intuitive design that anyone can use—no complex formulas, just instant input and immediate results. Stop Overspending Now! Instead of relying on vague expectations, use the [Gacha Calc: Probability Sim] to predict your goal achievement rate and optimize your spending.
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What's New in Gacha Calc

1.1.7

March 17, 2026

Improved input removal

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