Prime Catcher: Number Puzzle
Math, logic & brain training
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Tap only the primes as the numbers fall! A 1,229-prime encyclopedia, practice mode and online rankings make you sharper as you play. Fair by design — no pay-to-win.
Prime Catcher is a falling-block puzzle that sharpens your eye for prime numbers while you play.
Number blocks rain down from the top — tap only the primes to clear them. Tap a non-prime by mistake and penalty blocks come crashing in. Primes you haven't learned yet glow green; after you've met one five times, the glow goes out — from then on, spotting it is up to your own judgment.
■ Great for
• Anyone who loves numbers — or wants to
• Quick, brain-training puzzle sessions
• A learning-friendly game for students and classrooms
■ Features
• A "Prime Encyclopedia" of all 1,229 primes from 2 to 9,973, each with a bite-sized fact — get smarter the more you play
• Practice Mode that drills the exact numbers you struggle with
• Sprint: a one-minute score attack
• Catch twin, cousin or sexy primes (or an emirp) back to back to earn stars — fill the gauge for a special number
• Clear the whole board for a 6-second Prime Rush
• Hidden bonuses on the five special numbers: 57, 91, 341, 561 and 1729
• Online leaderboards: last 30 days / all-time
• English, Japanese & German · light/dark themes · color-blind-friendly palette
■ Fair by design
No pay-to-win items, and no reward ads that hand out an advantage just for watching. Rankings are pure skill. Prefer no ads? A one-time "Remove Ads" purchase is available.
Dive into the sea of numbers and catch the primes.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Nobuo Inoue, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- User Content
- Identifiers
- Usage Data
- Other Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nobuo Inoue
- Size
- 79.8 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 2 more
- English, German, Japanese
- Age Rating
13+
- 13+
- Contains
Advertising
User-Generated Content
- In-App Purchases
Yes
- Prime Master $59.99
- Prime Fan $9.99
- Remove Ads $2.99
- Copyright
- © 2026 MNMC