Math is Easy vs Prime Rush
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Math is Easy
This app helps users understand prime factorization with a fast, real-time solver. It also calculates the Greatest Common Factor and Least Common Multiple, and can generate random numbers for various uses.
- Prime factorization solver
- Greatest Common Factor (GCF) calculation
- Least Common Multiple (LCM) calculation
- Random number generator
- Real-time results as you type
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Math is Easy - Change Math into Fun , now add Equation Solver function! Prime Factorisation is the best tool to find prime factors of any number . It's super fast , you can get result while typing ! Additional functions : 1. Can calculate The Greatest Common Factor . 2. Can calculate The Least Common Multiple . 3. Can generate Random numbers , it can be used for bet , password generator , and decision maker .
Prime Rush
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Can you factorize numbers in the blink of an eye? Challenge your brain and reflexes with Prime Rush, the ultimate prime factorization time attack game! This is not just a math drill, it is a high-speed puzzle action game where speed and accuracy are key. Perfect for students studying for exams, adults looking for brain training, and math enthusiasts who love numbers. [HOW TO PLAY] Numbers will appear on the screen. Your goal is to break them down into their prime factors before time runs out! Input the Formula: Use the intuitive keypad to enter factors like "12 -> 2^2x3". It's a Prime!: If the number is already prime, just hit the "It's Prime!" button instantly. Speed Bonus: Answer quickly to extend your time limit. Keep the combo going to achieve a high score! [KEY FEATURES] Time Attack Mode Race against the clock! Start from easy integers and work your way up to massive 3-digit numbers. Global Leaderboards: Compete with players around the world. Your nickname, score, and date are recorded when you beat your personal best. 5 Difficulty Levels: Level 1: Beginners (4 - 50) Level 5: Masters (200 - 999) Can you conquer the hardest difficulty? Practice Mode Need to study without the pressure? Practice at your own pace with no time limits. Ideal for overcoming your weak numbers and understanding the logic behind division. Note: Level 1 is free; Levels 2-5 require a Pro Plan upgrade. Built-in Factorization Calculator Includes a dedicated tool to instantly factorize any number. Use it to check your homework or explore the beauty of prime numbers. Friendly Design Featuring cute "Pochimu" characters to cheer you on. Satisfying sound effects and haptic feedback (customizable in Settings). Share your "New Record" cards directly to social media! [WHY PLAY PRIME RUSH?] Boost Mental Math: Drastically improve your calculation speed for multiplication and division. School Prep: Perfect for middle school and high school algebra preparation. Brain Teaser: A stimulating workout for your frontal cortex. Prevents brain aging with daily logic puzzles. [PRO PLAN] Unlock the full potential of Prime Rush with the Pro Plan to access all Practice Mode levels. Master every number from 4 to 999! Ready to become a Prime Master? Download Prime Rush today and start your mental math workout!
Screenshots
Verdict
The clearest difference is in-app purchases: Math is Easy at none against Prime Rush's 1. Math is Easy also leads on ads (none vs shown) and device support (3 vs 1). Prime Rush's advantage is update cadence (every 3 weeks vs every 2 months). On price there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Prime Rush sells 1 one-off in-app purchase. Math is Easy asks for nothing beyond the download.
Math is Easy ships an update every 2 months, Prime Rush every 3 weeks. The most recent releases landed on November 1, 2026 and November 9, 2026 respectively.
| Parameter | Math is Easy | Prime Rush |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) — better | — |
| Positive reviews | 90.9% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 7.0 — better | 17 |
| Further details — not scored | ||
| Size | 6 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Xiaodong Zhu | Ayumu Izumi |
In-app purchases
Math is Easy
No in-app purchases
Prime Rush
- Pro Plan$1.99









