Prime Press
A prime factorization puzzle
Free · Designed for iPad. Not verified for macOS.
Drop blocks made of primes and divide every number down to 1. 100 studies that can always be solved, plus an Endless mode that never stops.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Tatsuya Furukawa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tatsuya Furukawa
- Size
- 6.3 MB
- Category
- Puzzle
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 T.Furukawa
