Lottery Probability Calculator vs Probability Sim
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Lottery Probability Calculator
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It is an application that calculates the probability of winning by lottery or gacha. Enter the probability of winning and how many times you will draw, and you can calculate the probability of winning more than once. Probabilities can also be entered as percentages and fractions. γ»Probability of winning the lottery Calculate the probability of winning from the appearance rate and the number of trials. You can calculate the probability of winning more than once when you draw 100 times. Since the probability of obtaining 0 to 4 times and 5 times or more is also displayed, you can also check the probability of obtaining multiple times. γ»Number of times to win the lottery Calculate the number of trials required to draw a hit from the appearance rate and acquisition probability. You can calculate how many times you have to draw a lottery with a probability of winning 0.1% to get a probability of 80% or more. The number of times in 5% increments for each probability of winning is also displayed in a list, so you can easily check the number of times you need. γ»Probability of getting everything When there are multiple prizes in gacha etc., calculate the probability of getting all of them by subtracting the specified number of times. You can easily check the probability of completing the lottery with 10 types of prizes when you draw 30 times.
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.
Screenshots
Verdict
The clearest difference is in-app purchases: Lottery Probability Calculator at none against Probability Sim's 2. Lottery Probability Calculator also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Probability Sim sells 2 in-app purchases, starting at $4.99 per month. Lottery Probability Calculator asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 10 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.
| Parameter | Lottery Probability Calculator | Probability Sim |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 months | Every 10 months |
| Ads | Yes | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 17 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Kouji Yamauchi | kota tada |
In-app purchases
Lottery Probability Calculator
No 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
Questions
Is Lottery Probability Calculator free?
Is Probability Sim free?
Do Lottery Probability Calculator or Probability Sim have ads?
Which is updated more often, Lottery Probability Calculator or Probability Sim?
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