Comparison

Sosuu vs Rules Change

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Sosuu

Read full description

【Sosuu - Prime Factorization Puzzle】 Tap numbers to factorize them into primes! Match 3 or more identical primes to clear them. A simple yet deep puzzle game. ■ How to Play • Tap gray numbers (composites) to factorize them • Example: Tap 12 → splits into 2, 2, 3 • When 3+ identical primes get close, they merge and disappear • Keep numbers below the red line to survive ■ Game Modes • ZEN: Relaxed endless gameplay • RUSH: 60-second time attack • PUZZLE: Clear with limited moves ■ Features • Beautiful cosmic-themed design • Satisfying pop effects • Naturally develop mathematical thinking • No ads, plays offline Welcome to the world of prime numbers!

About

Rules Change

A minimalist puzzle game where the rules constantly change each round. Players must adapt their thinking under pressure to follow new, often contradictory, rules to score higher. It tests mental flexibility and quick decision-making.

Highlights
  • New rule every round
  • Simple, abstract visuals
  • Increasing difficulty
  • Countdown timer
  • Score based on adaptation
Features
Read full description

Rules Change is a minimalist puzzle game where the rules never stay the same. Each round presents a simple rule and a set of shapes. Follow the rule correctly to continue — but be careful. With every new round, the rule changes, reverses, or contradicts what you just learned. The challenge isn’t speed alone, but adapting your thinking as expectations shift. There’s no memorization, no patterns to rely on, and no tricks you can use forever. The only way to score higher is to stay flexible and react under pressure. Features: • A new rule every round • Simple, abstract visuals with no distractions • Increasing difficulty as rules change faster • A countdown timer that rewards quick thinking • Score based on how long you can adapt Rules Change is designed to test mental flexibility, focus, and decision-making. It’s easy to start, difficult to master, and challenging in a way that stays fair. How long can you keep up when the rules won’t stay the same?

Screenshots

Sosuu3 screens
Rules Change4 screens

Verdict

The call

Sosuu and Rules Change are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Sosuu versus Rules Change: the parameters behind the verdict, then further details
ParameterSosuuRules Change
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size6 MB191 MB
Age rating4+4+
DeveloperKosuke KikuchiRICHARD RADI BARKETT

In-app purchases

None

Sosuu

No in-app purchases

None

Rules Change

No in-app purchases

Questions

Is Sosuu free?
Sosuu is free to download, with no in-app purchases.
Is Rules Change free?
Rules Change is free to download, with no in-app purchases.
Do Sosuu or Rules Change have ads?
Neither Sosuu nor Rules Change shows ads.

Other comparisons