Comparison

Lotto Engine 2D vs Lottery Probability Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lotto Engine 2D

This app generates random numbers using a physics-based simulation of balls in a container. Personalize your experience by selecting favorite numbers and enjoy a fun, easy-to-use random number picker.

Highlights
  • Physics-based 2D/3D ball simulation
  • Random number generation
  • Customizable settings
  • Favorite number selection
  • Easy to use interface
Features
Read full description

Download the app today to personalize your experience by choosing your favorite numbers! A creative application that simulates the movement of a ball in a container, based on a real physics 2D/3D engine, a fun random ball generator. It is a must-have gadget. Easy to use and easy to custom settings. A handy random random number-picking tool. You need it!

About

Lottery Probability Calculator

Features
Read full description

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. ・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. ・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. ・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.

Screenshots

Lotto Engine 2D3 screens
Lottery Probability Calculator4 screens

Verdict

The call

The clearest difference is in-app purchases: Lottery Probability Calculator at none against Lotto Engine 2D's 1. Lotto Engine 2D's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 10 months). On price, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lotto Engine 2D sells 1 one-off in-app purchase. Lottery Probability Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Lotto Engine 2D ships an update every 5 weeks, Lottery Probability Calculator every 10 months. Both last shipped on November 3, 2026.

Scorecard3 real differences · 7 level
Lotto Engine 2D versus Lottery Probability Calculator: the parameters behind the verdict, then further details
ParameterLotto Engine 2DLottery Probability Calculator
PriceFreeFree
Rating4.7 (15 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings15 — better—
Update frequencyEvery 5 weeks — betterEvery 10 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size17 MB17 MB
Age rating4+4+
Developer何均 邓Kouji Yamauchi

In-app purchases

1 purchases

Lotto Engine 2D

One-time1
  • Unlock All Features$1.99
None

Lottery Probability Calculator

No in-app purchases

Questions

Is Lotto Engine 2D free?
Lotto Engine 2D is free to download, with in-app purchases available.
Is Lottery Probability Calculator free?
Lottery Probability Calculator is free to download, with no in-app purchases.
Do Lotto Engine 2D or Lottery Probability Calculator have ads?
Lottery Probability Calculator shows ads; Lotto Engine 2D does not.
Which is updated more often, Lotto Engine 2D or Lottery Probability Calculator?
Lotto Engine 2D ships an update every 5 weeks, and Lottery Probability Calculator every 10 months. Most recently, Lotto Engine 2D was updated on November 3, 2026 and Lottery Probability Calculator on November 3, 2026.

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