# SOINSU math puzzle — infinity prime factorization > infinity prime factorization (iPhone/iPad app by GAIBAKO co., Ltd..) - Source: https://appshunter.io/ios/app/soinsu-math-puzzle/id6444055103 (this page in markdown: same URL + `.md`) - Developer: [GAIBAKO co., Ltd.](https://appshunter.io/developer/1548482925) - Category: Games, Education, Casual, Puzzle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 12.0 · 105 MB - Languages: English - Released: 2022-10-29 - Data updated: 2026-05-17 - User reviews in markdown: https://appshunter.io/ios/app/soinsu-math-puzzle/id6444055103/reviews.md ## What is SOINSU math puzzle? SOINSU Math puzzles to stimulate your brain. Anyone can easily learn the fun of numbers through time-killing brain training. This is a simple game that can be enjoyed by even elementary school students to train their mental arithmetic skills. You can casually enjoy prime factorization, which is essential for mathematics. Let's enter the world of prime numbers with high-tempo trance music! You'll definitely be hooked! Choose a prime number that can evenly divide the numbers that appear. Repeat more and more until you reach a prime number, then select "SOSUU!" The next number will appear. When you clear it, the level will go up. As the level increases, the number of types of prime numbers increases. Aim to clear the high level! ●Basic rules: ◇This is a game where you do prime factorization. ●How to play: ◇Divide the number in the middle into prime factors ◇Choose a prime number that can divide the number and flick in that direction ◇If you answer correctly, it will be divided, so repeat ◇Repeat until it becomes a prime number ◇When it becomes a prime number, flick down (SOSUU!) ◇The level increases and the next number is displayed in the center. ◇If you can't answer within 5 seconds, it's a mistake. ◇If you make a mistake 3 times, the game is over. Even though it's easy to play, you'll definitely get hooked on the increasingly difficult problems! Now, let's have some fun! ●Function: ◇Simple and cyber visuals ◇Trance music that uplifts your mood ◇Game play that strengthens concentration ◇Casual game that can be completed in a short time ◇The prime number collection that can be collected is a threatening 168 pieces. ◇You can play the no time limit mode once by watching the video. ●Mode ◇Normal Time limit 5 seconds ◇Easy 10 seconds time limit ◇Hard Time limit 5 seconds Starts at level 21 ◇Unlimited time (paid) unlimited time ●Prime number collection ◇When you watch the video, one prime number collection will be released. ◇There are 168 prime numbers in total. It covers all 3-digit prime numbers. ◇Prime numbers can be seen in beautiful cyber visuals. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Hidden Ads | $2.99 | one-time | | Add no time limit mode | $0.99 | one-time | ## Version history (last 5 releases) ### 1.8 — 2024-08-10 Corrections due to database changes ### 1.7 — 2023-09-20 Add font change mode Add ranking mode ### 1.6 — 2023-09-19 Ads bug fix ### 1.5 — 2023-09-18 Update bug fix add hard mode ### 1.4 — 2023-09-14 update ads unit ## Apps similar to SOINSU math puzzle | App | Rating | Price | Category | | --- | --- | --- | --- | | [1234 (connect number)](https://appshunter.io/ios/app/1234-connect-number/id6475421133) | 4.0 (3) | Free | Games | | [Ring in Ring](https://appshunter.io/ios/app/ring-in-ring/id6751136324) | — | Free | Games | | [AI Battler - AI Judge battle](https://appshunter.io/ios/app/ai-battler-ai-judge-battle/id6448725330) | 4.6 (97) | Free | Games | | [Sudoku -- official Nikoli](https://appshunter.io/ios/app/sudoku-official-nikoli/id6444442602) | 4.2 (5) | Free | Games | | [Polylylyrhythm](https://appshunter.io/ios/app/polylylyrhythm/id6502379312) | 4.9 (12) | Free | Games | | [書かれた数字だけ電線をつなぐパズル](https://appshunter.io/ios/app/id6738987694) | 5.0 (1) | Free | Games | ## More apps by GAIBAKO co., Ltd. - [ハックスタック -Hack Stuck-](https://appshunter.io/ios/app/hack-stuck/id1548482923) - [Crabhome](https://appshunter.io/ios/app/crabhome/id1551908729) - [FerretDance](https://appshunter.io/ios/app/ferretdance/id1563053230) - [ゴリラアツメ](https://appshunter.io/ios/app/id1568917065) - [ーふっかつのじゅもんー](https://appshunter.io/ios/app/id1585350712) - [IKAGAME](https://appshunter.io/ios/app/ikagame/id1597671366) All apps by GAIBAKO co., Ltd.: https://appshunter.io/developer/1548482925 ## Related topics [soinsu math puzzle](https://appshunter.io/ios/topics/soinsu-math-puzzle) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*