Comparison

Fish Merge Master vs Derpy Cat

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

Head to head
About

Fish Merge Master

Merge balls strategically to unlock their potential and progress through challenging levels. Discover power-ups to create massive combos and overcome obstacles in a captivating multiverse adventure.

Highlights
  • Strategic ball merging
  • Unlock ball potential
  • Progress through levels
  • Discover power-ups
  • Multiverse exploration
  • Addictive gameplay
Features
Read full description

Embark on an exhilarating journey through the multiverse with Slimey, the charming protagonist of our captivating game! Dive into a world where merging balls reign supreme, offering a gameplay experience that is both addictive and rewarding. Strategically drop and merge balls to unlock their full potential, progressing through increasingly challenging levels as you explore diverse worlds filled with treasures to uncover. But fear not, for Slimey is not alone on this adventure! Discover powerful power-ups scattered throughout the multiverse to aid you in your quest. Unleash the "Merge All" power-up to create massive combos, activate the "Bomb" power-up to shake things up, or wield the "Tele Merge" item to merge balls that are far apart. With these tools at your disposal, no challenge is too great for Slimey to overcome. Are you ready to embark on a journey filled with excitement, strategy, and endless possibilities? Join Slimey and dive into our enchanting game today!

About

Derpy Cat

Features
Read full description

Drop adorable, derpy cats and match them to create bigger, even derpier ones! Can you merge your way to the legendary Cat God? Derpy Cat is a physics-based drop & merge puzzle game where cats bounce, roll, and stack in hilariously chaotic ways. Match two cats of the same tier to evolve them into the next — from tiny kittens all the way up to the all-powerful Cat God. CLASSIC MODE Drop cats, stack smart, and chase your highest score. Merge combos for bonus points and screen-shaking celebrations. One wrong move and your box overflows — game over! DAILY CHALLENGE A new puzzle every day with the same drop sequence for all players. Compete on the global Game Center leaderboard and build your daily streak. CATPEDIA Collect and discover all 10 cat tiers. Each one has its own unique look and personality — tap to learn their hilarious bios. FEATURES • 10 tiers of increasingly derpy cats to discover • Physics-based gameplay — every drop is different • Daily challenges with Game Center leaderboards • Streak tracking to keep you coming back • Combo scoring system with satisfying merge effects • Haptic feedback, particles, and screen shake • Catpedia collection with unique cat bios • Original music and sound effects

Screenshots

Fish Merge Master4 screens
Derpy Cat4 screens

Verdict

The call

The clearest difference is in-app purchases: Derpy Cat at none against Fish Merge Master's 7. Derpy Cat also leads on update cadence (every 4 days vs fortnightly). Fish Merge Master's advantage is iOS requirement (15.0 vs 17.6). On price, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fish Merge Master sells 7 one-off in-app purchases. Derpy Cat asks for nothing beyond the download.

UpkeepUpdate frequency

Fish Merge Master ships an update fortnightly, Derpy Cat every 4 days. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 6 level
Fish Merge Master versus Derpy Cat: the parameters behind the verdict, then further details
ParameterFish Merge MasterDerpy Cat
PriceFreeFree
Rating4.9 (8 ratings) — better—
Number of ratings8 — better—
Update frequencyFortnightlyEvery 4 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size180 MB38 MB
Age rating4+4+
DeveloperSevenSwordsLucas Moeller

In-app purchases

7 purchases

Fish Merge Master

One-time7
  • 1000 Gem$0.99
  • Remove Ads$2.99
  • 3000 Gem$2.99
Show 4 more
  • 5000 Gem$4.99
  • 11000 Gem$9.99
  • 25000 Gem$19.99
  • 50000 Gem$29.99
None

Derpy Cat

No in-app purchases

Questions

Is Fish Merge Master free?
Fish Merge Master is free to download, with in-app purchases available.
Is Derpy Cat free?
Derpy Cat is free to download, with no in-app purchases.
Do Fish Merge Master or Derpy Cat have ads?
Both Fish Merge Master and Derpy Cat show ads.
Which is updated more often, Fish Merge Master or Derpy Cat?
Fish Merge Master ships an update fortnightly, and Derpy Cat every 4 days. Most recently, Fish Merge Master was updated on November 4, 2026 and Derpy Cat on November 9, 2026.

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