Prime Cracker vs Prime Not Prime
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prime Cracker
This app helps users explore the fascinating world of prime numbers. It allows you to check if a number is prime, find its factors, and discover nearby primes. You can also analyze ranges of numbers for primes and twin primes.
- Determine primality and factors
- Find prime position
- Explore nearby primes
- Check number ranges for primes
- Identify twin primes
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• Determine a number's primality, factors or prime position • Explore nearby prime numbers conveniently • Check ranges of numbers for primes and twin primes
Prime Not Prime
A fast-paced game that combines number recognition with a swiping mechanic. Players swipe right for prime numbers and left for non-primes, aiming to build long streaks. It's designed to be both educational and entertaining, with leaderboards for competitive play.
- Addictive swiping gameplay
- Test prime number knowledge
- Build streaks and complete challenges
- Global leaderboards
- Vibrant visuals and animations
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Ready to swipe your way to prime number mastery? Prime Not Prime is the fun, fast-paced game where math meets swiping! Like Tinder for numbers, you swipe right for primes and left for everything else. Easy to learn, but can you handle the streak pressure? Features You’ll Love: • Addictive Swiping Gameplay: Swipe numbers left or right in a race against time. • Test Your Knowledge: Spot prime numbers and learn fun math facts. • Streaks and Challenges: Compete to see how long you can keep your streak alive. • Leaderboards: Challenge friends and global players to see who’s the prime master. • Widgets: Guess your prime numbers right from your Home Screen. • Fun Design: Vibrant visuals and satisfying animations make every swipe exciting. Whether you’re a math whiz or just love a challenge, Prime Not Prime is the ultimate game for your brain. Swipe, learn, and have fun with prime numbers! Privacy Policy & Terms: https://www.rspoon3.com/prime-not-prime/privacy/
Screenshots
Verdict
The clearest difference is rating: Prime Cracker at 4.9 against Prime Not Prime's 4.3. Prime Cracker also leads on ratings volume (33 vs 6) and device support (5 vs 1). On price, review sentiment, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.
Prime Cracker holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: Prime Cracker has 33 ratings behind it against 6, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Prime Cracker ships an update every 2 weeks, Prime Not Prime monthly. Both last shipped on October 24, 2026.
| Parameter | Prime Cracker | Prime Not Prime |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (33 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 33 — better | 6 |
| Update frequency | Every 2 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Sven Freitag | Richard Witherspoon |
Customer experience
Prime Cracker
Prime Not Prime
In-app purchases
Prime Cracker
No in-app purchases
Prime Not Prime
No in-app purchases
Questions
Is Prime Cracker free?
Is Prime Not Prime free?
Which has better reviews, Prime Cracker or Prime Not Prime?
Do Prime Cracker or Prime Not Prime have ads?
Which is updated more often, Prime Cracker or Prime Not Prime?
Other comparisons
