Rule It Out! vs Prime Not Prime
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rule It Out!
Challenge your mental math skills with this fast-paced game. Sort numbers based on given rules, from simple multiplication to complex exponents and fractions. Catch bonus boosts and unlock expert moves for high scores.
- Mental math challenges
- Rule-based number sorting
- Times tables practice
- Fractions and decimals
- Bonus boosts
- Expert power moves
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Rule it Out! is a game that will challenge your mental math skills to the extreme! Do you know your math rules? How fast can your fingers swipe? Begin with simple multiplication rules practicing times tables up to 10x10 or "Greater Than/Less Than" relativity questions. Once you've mastered that, work on your larger numbers, square numbers, cubed numbers, exponents, fractions and decimals. You are given a RULE to follow, then you must be quick with the fingers to sort out which numbers in the stream follow the rule or don't follow the rule. Be quick to catch the bonus boosts! Expert power moves are hidden to amp up the excitement. . . and the point possibilities! It's a great brain work-out for school, home or your commute. YOU RULE! appikiko, LLC is a proud member of the MomsWithApps community and we fully support the KNOW What's Inside program to protect children's online safety and privacy. Feel confident that this app: Does not collect personally identifiable information Does not generate any performance reports Does not contain in-app purchases Does not link to outside websites or social media without a "parental gate" Does not contain advertisements Let us know what you think: info@appikiko.com We LOVE to hear from our users!
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 price: Prime Not Prime at Free against Rule It Out!'s $0.99. Prime Not Prime also leads on update cadence (monthly vs every 35 months). Rule It Out!'s advantage is rating (5.0 vs 4.3) and device support (3 vs 1). On review sentiment, ratings volume, ads and in-app purchases 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
Prime Not Prime is free to download; Rule It Out! costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Rule It Out! holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 6 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Rule It Out! ships an update every 35 months, Prime Not Prime monthly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | Rule It Out! | Prime Not Prime |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (6 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 6 | 6 |
| Update frequency | Every 35 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 39 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | appikiko LLC | Richard Witherspoon |
Customer experience
Rule It Out!
Prime Not Prime
In-app purchases
Rule It Out!
No in-app purchases
Prime Not Prime
No in-app purchases
Questions
Is Rule It Out! free?
Is Prime Not Prime free?
Which has better reviews, Rule It Out! or Prime Not Prime?
Do Rule It Out! or Prime Not Prime have ads?
Which is updated more often, Rule It Out! or Prime Not Prime?
Other comparisons
