CompareOpen in App StoreApp info
- Category
- Games
- Age rating
- 4+
- Price
- Free
- Version
- 2.2.0
- Released
- Mar 13, 2026
- Last updated
- 18 Jun 2026
- Size
- 50.5 MB
- Requires
- iOS 17.0 or later
- Languages
- 1
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★★★★★
Average rating on the App Store. Apple doesn't publish how many ratings each star has.
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What's newin version 2.2.0
Daily play just got better — use your gear freely! ◆ Way more items • Daily login now grants every item type, and the longer your streak the more you get each day (up to 7 of each) • Bigger rewards from daily missions, challenges, and ads ◆ Daily refill & item conversion • Equipped items top up automatically every day • Convert spare items 1:1, or craft an Ultimate from 10 of them ◆ New: Ultimate slot (a once-per-game special) • 30-Second mode — Prime Rush: the whole board instantly turns into 2s! • Prime Musou — Prime Rampage: wipe the screen + unlimited barrier for 8s ◆ Musou risk items retuned • Surge & Overdrive drop their score multiplier and instead crank enemy spawn rate and speed — high-risk items where volume and skill earn the points Plus minor tweaks and bug fixes.
About this app
Read full description
Spot the prime numbers and tap them before time runs out — a simple but surprisingly deep speed math game. HOW TO PLAY Bubbles float across the screen showing numbers. Tap only the primes! You have 30 seconds — how many can you get right? Tapping a composite number counts as a miss, so think fast. FEATURES · Global Leaderboard — Submit your score and compete with players worldwide · 4 Difficulty Levels — EASY / NORMAL / HARD, plus a secret LEGEND mode to unlock · Digit Customization — Choose 1 to 5 digits. Bigger numbers = harder = higher points · Combo System — Chain correct taps to multiply your score · Training Mode — Practice without a timer and sharpen your prime sense · Dark / Light Theme — Easy on the eyes, day or night · Japanese / English supported WHO IS IT FOR? Anyone who loves math or numbers People looking for a quick mental workout Players who want to compete on leaderboards Anyone who wants to train focus and reaction speed A prime number is any integer greater than 1 that can only be divided by 1 and itself (2, 3, 5, 7, 11,13…). They seem familiar — until the numbers get big. That's the challenge. Watch a short video ad to enjoy 1 hour of ad-free play. So, what's your score?