Probability Sim vs 確率ジェネ
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Probability Sim
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Probability Simulator 1T Trials is a powerful simulation app that lets you test probabilities to the extreme. Run up to 1 trillion trials and calculate probabilities as low as 1 in a trillion. Choose from decimal, percentage, or fraction notation. Simultaneously run multiple probability events for complex calculations. Perfect for statistics enthusiasts, mathematicians, and anyone interested in random trials. Sharpen your probability intuition and gain real insights from large-scale simulations.
確率ジェネ
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"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.
Screenshots
Verdict
The clearest difference is in-app purchases: 確率ジェネ at none against Probability Sim's 2. 確率ジェネ also leads on update cadence (every 3 months vs every 10 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Probability Sim sells 2 in-app purchases, starting at $4.99 per month. 確率ジェネ asks for nothing beyond the download.
Probability Sim ships an update every 10 months, 確率ジェネ every 3 months. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.
| Parameter | Probability Sim | 確率ジェネ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 months | Every 3 months — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 37 MB |
| Age rating | 4+ | +4 |
| Developer | kota tada | ryuichi hayashida |
In-app purchases
Probability Sim
- Ad-free for 1 month7 Days trial$4.991 Month
- Ad-free for 1 year14 Days trial$49.991 Year
確率ジェネ
No in-app purchases
