Comparison

Sosu der vs 素因数分解キングダム

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

Head to head
About

Sosu der

Features
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This app is a quiz application that determines whether a number is prime or composite and swipes the correct answer. A prime number is a natural number greater than 1 that is not divisible by any other number except 1 and the number itself. For example, 2, 3, 5, and 7 are single-digit prime numbers. Composite numbers (composite numbers) are natural numbers greater than 1 that are not prime and are represented by the product of smaller natural numbers (e.g., 4 = 2 x 2, 6 = 2 x 3). Through this app, you can test your judgment and reflexes while having fun learning these mathematical concepts. ... How many two-digit, three-digit, and four-digit prime numbers do you know? Translated with www.DeepL.com/Translator (free version)

About

素因数分解キングダム

Features
Read full description

素因数分解キングダムはゲームを通じて、素因数分解を学ぶことができるアプリです。 単にゲームとして楽しむだけでなく、定期テスト対策や受験勉強の一環としても活用できます。 また、脳トレとしても効果的なので、学生以外にもおすすめです。 "Prime Factorization Kingdom" is an app that allows users to learn prime factorization through gameplay. Not only can it be enjoyed as a game, but it can also be utilized as part of regular test preparation or entrance exam studies. Additionally, it is effective as a brain-training tool, making it highly recommended not just for students but for people of all ages.

Screenshots

Sosu der4 screens
素因数分解キングダム3 screens

Verdict

The call

The clearest difference is ads: 素因数分解キングダム at none against Sosu der's shown. 素因数分解キングダム also leads on update cadence (weekly vs every 4 months). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Sosu der ships an update every 4 months, 素因数分解キングダム weekly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 4 level
Sosu der versus 素因数分解キングダム: the parameters behind the verdict, then further details
ParameterSosu der素因数分解キングダム
PriceFreeFree
Update frequencyEvery 4 monthsWeekly — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size140 MB55 MB
Age rating4+4+
DeveloperHirobumi OnishiYuta Matsuda

In-app purchases

None

Sosu der

No in-app purchases

None

素因数分解キングダム

No in-app purchases

Questions

Is Sosu der free?
Sosu der is free to download, with no in-app purchases.
Is 素因数分解キングダム free?
素因数分解キングダム is free to download, with no in-app purchases.
Do Sosu der or 素因数分解キングダム have ads?
Sosu der shows ads; 素因数分解キングダム does not.
Which is updated more often, Sosu der or 素因数分解キングダム?
Sosu der ships an update every 4 months, and 素因数分解キングダム weekly. Most recently, Sosu der was updated on November 4, 2026 and 素因数分解キングダム on October 30, 2026.

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