$1.99
About
Tap a red number. Pop! It splits, chains, and the board clears away — and honestly, it's kind of addictive.
Sokyo is a chain puzzle where you tap primes to clear the board.
Play a few rounds and you'll get friendly with numbers without even trying.
"What divides this?" "2×3 makes 6" — you pick up multiplication and division without it ever feeling like homework. Even if numbers aren't your thing, you'll just be playing a game.
■ Easy to learn
Tap a red tile (a prime) and every number it divides in its row and column splits at once. If a split makes a new prime, that one fires too — a chain! The deeper you chain, the more clears at once and the bigger your score.
New numbers keep coming every turn. Think a step ahead and see how long you can last before the board fills up. A perfect little brain workout for a spare minute.
■ Great for
- A quick mental break
- Anyone who loves numbers or puzzles
- Getting comfortable with numbers through play (kids too)
■ Features
- Simple rules, surprising depth
- Gets tougher as you go
- Light & Dark
- No ads, no in-app purchases, no data collected
- Don't know primes? You'll pick them up as you play
Tap, chain, and clear them all.
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What's New in Prime Number Puzzle
1.2
August 12, 2026
We improved the App Store listing to make the app easier to find.





