# Sokyo - Division Puzzle — Tap primes. Start a chain.

> Tap primes. Start a chain. (iPhone/iPad app by TOMONOBU HASUMI.)

- Source: https://appshunter.io/ios/app/sokyo-division-puzzle/id6789144447 (this page in markdown: same URL + `.md`)
- Developer: [TOMONOBU HASUMI](https://appshunter.io/developer/1734539436)
- Category: Games, Puzzle
- Price: $1.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English, Japanese
- Released: 2026-07-12
- Data updated: 2026-09-22
- User reviews in markdown: https://appshunter.io/ios/app/sokyo-division-puzzle/id6789144447/reviews.md

## What is Sokyo?

Play with numbers. Discover division.
Which number would you tap to start a chain reaction?

Sokyo is a number puzzle where tapping a red prime divides the numbers it can divide in the same row and column. When a result becomes prime, it triggers the next step in the chain. One thoughtful tap can set off a satisfying cascade.

DISCOVER THE CONNECTIONS
For example, 6 divided by 2 becomes 3. That new 3 can spark another division. Explore which numbers divide evenly and where the next connection might appear.

SEE WHERE TO START
Red tiles with a ring mark the primes you can tap. The how-to-play guide introduces the rules, so you can start by trying a move and watching the numbers change.

THINK ONE MOVE AHEAD
New numbers arrive every turn. Clear space now, or look for a bigger chain? Read the board and aim for a new high score.

PLAY TOGETHER OR SOLO
Ask “What happens if we tap here?” and explore the board together. Or enjoy a thoughtful number puzzle during a short break.

- Increasing challenge as you play
- Save your current game and resume later
- Light and Dark appearances
- English and Japanese
- No ads or in-app purchases

Tap. Divide. Connect.
Find your next move in Sokyo.


## Version history (last 4 releases)

### 1.3 — 2026-09-12

Refreshed our App Store description, screenshots, and preview video to show the fun of division and chain reactions.

### 1.2 — 2026-08-12

We improved the App Store listing to make the app easier to find.

### 1.1 — 2026-07-14

Performance improvements and minor fixes.

### 1.0 — 2026-07-12

No release notes.

## More apps by TOMONOBU HASUMI

- [ChibiCopy - Clipboard Manager](https://appshunter.io/ios/app/chibicopy-clipboard-manager/id6747174509)
- [MojiPon: Typing for Kids](https://appshunter.io/ios/app/mojipon-typing-for-kids/id6785442240)
- [SixSquares - Math for Kids](https://appshunter.io/ios/app/sixsquares-math-for-kids/id6796581600)
- [Nyan Souji - Cat Slide Puzzle](https://appshunter.io/ios/app/nyan-souji-cat-slide-puzzle/id6801507981)

All apps by TOMONOBU HASUMI: https://appshunter.io/developer/1734539436

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*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 2026-09-22.*