# Prime Nerd — Tap Primes. Beat the Clock.

> Tap Primes. Beat the Clock. (iPhone/iPad app by Hiroki Sekimoto.)

- Source: https://appshunter.io/ios/app/prime-nerd/id6760544446 (this page in markdown: same URL + `.md`)
- Developer: [Hiroki Sekimoto](https://appshunter.io/developer/1877884860)
- Category: Games, Education, Casual, Word
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 50 MB
- Languages: English
- Released: 2026-03-13
- Data updated: 2026-06-27
- User reviews in markdown: https://appshunter.io/ios/app/prime-nerd/id6760544446/reviews.md

## What is Prime Nerd?

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?


## Version history (last 5 releases)

### 2.2.0 — 2026-06-18

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.

### 1.2.3 — 2026-06-03

Fixed an issue where the same player’s record could appear multiple times on the ranking screen.

### 1.2.1 — 2026-05-26

More ways to earn power-up gear!

• Earn gear from daily missions, today's challenge, quests, login streaks, and more.
• Catch-up rewards: gear granted for quests and missions you'd already completed.
• Clearer leaderboards: top 15 shown, tap to expand to 50, with shared ranks for ties.
• Improved login-streak display, including days until your next bonus.
• Minor UI improvements and bug fixes.

### 1.0.8 — 2026-05-07

• Fixed visual cues that hinted at answers — back to pure skill-based play
• Redesigned power-ups and score economy for better balance
• Dynamic question generation prevents memorization exploits
• Fixed leaderboard submission and VoiceOver issues

### 1.0.7 — 2026-05-06

New Game Modes
- Super Prime Time: Charge up your ultimate to turn every bubble into a prime for 5 seconds
- Boss Prime: Every 20-combo streak spawns a giant prime worth 3x points

Power-Ups Are Live
- Slow-Mo / Prime Hint / +5 Sec / Double Score / Combo Shield now actually work
- Earn random power-ups from daily login streak rewards

Training Upgrades
- Weak-Spot Drill: Focused practice on numbers you've missed before
- Weekly Recap: 7-day score summary and your toughest primes

Accessibility
- Color-blind support: checkmark on primes, X mark on composites
- Reduced Motion: tones down animations and particles
- Custom reminder time

Smarter Results Screen
- "N points to next rank" indicator
- Factorization breakdown for composites you misidentified
- Subtle review prompt on personal bests

Major Visual Polish
- Living gradient backgrounds, twinkling stars, animated title shimmer
- Rainbow combo numbers at 20+, glowing screen edges
- Time-low red warning pulse
- Dramatic rank reveal animation
- "+N" pop-ups and big shockwave on prime hits
- Frosted-glass cards, smooth difficulty picker transitions
- XP bar shimmer + level-up flash

## More apps by Hiroki Sekimoto

- [Hoteler Log Hotel Stay Tracker](https://appshunter.io/ios/app/hoteler-log-hotel-stay-tracker/id6759289639)
- [Layput](https://appshunter.io/ios/app/layput/id6762073634)
- [すくのび](https://appshunter.io/ios/app/id6763573766)

All apps by Hiroki Sekimoto: https://appshunter.io/developer/1877884860

## Related topics

[gmg prime](https://appshunter.io/ios/topics/gmg-prime)

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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 2026-06-27.*