# Prime Press — A prime factorization puzzle

> A prime factorization puzzle (iPhone/iPad app by Tatsuya Furukawa.)

- Source: https://appshunter.io/ios/app/prime-press/id6825669873 (this page in markdown: same URL + `.md`)
- Developer: [Tatsuya Furukawa](https://appshunter.io/developer/6813589008)
- Category: Games, Education, Casual, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 6 MB
- Languages: American English, Japanese
- Released: 2026-10-28
- Data updated: 2026-10-30

## What is Prime Press?

Prime Press is a prime factorization puzzle: drop blocks made of primes onto a board of numbers and divide every number down to 1.

HOW TO PLAY
- Every cell of a block carries a prime. When you drop a block, each cell divides the number under it if it can.
- A number that reaches 1 clears. Clear the whole board to win.
- The ringed "core" cell must divide the number under it. Drop it where it can't, and it's a foul.
- Tap a block in your hand to rotate it.

100 STUDIES
Clear each board with the blocks you're given. Boards grow from 4x4 to 7x7, and primes join one at a time, from 2 and 3 all the way up to 97. Every study is built to be solvable, and you don't have to use every block. A foul just hands the block back, so take your time.

ENDLESS
Energy keeps draining, and landing blocks restores it. The more you clear, the larger the primes and the board, with numbers growing toward a billion. A foul ties your hands for a moment, so speed and accuracy both count.

ALSO
- Tickets used to play refill every day. Ads are shown only when you choose to watch one for more tickets.
- No in-app purchases. No account needed.
- Japanese and English. Light and dark themes, and sound effects on or off.
- Plays on iPhone and iPad.

## Is Prime Press safe?

Not enough ratings yet to assess Prime Press.

## Is Prime Press legit?

Prime Press has limited verification signals. The AppsHunter Legitimacy Score for Prime Press is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-10-29

No release notes.

## More apps by Tatsuya Furukawa

- [Lattice TD](https://appshunter.io/ios/app/lattice-td/id6813589006)
- [Blockpon](https://appshunter.io/ios/app/blockpon/id6817041490)

All apps by Tatsuya Furukawa: https://appshunter.io/developer/6813589008

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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 2026-10-30.*