Comparison

UDLR Sliding puzzles vs Derpy Cat

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

Head to head
About

UDLR Sliding puzzles

Features
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UDLR is a collection of sliding puzzles. Currently it includes the following games: - Number puzzle (Upgraded version of 15 puzzle) - Classic mode - Snake mode - Spiral mode - Picture puzzle - Klotski - Rush Hour - 2048 How to play: - Number puzzle and Picture puzzle: Tap or slide a tile to move it, and any other tile that between the blank tile and the touched tile will be moved together - Klotski and Rush Hour: Slide a tile to move it - 2048: Move all tiles by sliding in different directions Enjoy the games!

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 โ€” 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 โ€” 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 โ€” tap to learn their hilarious bios. FEATURES โ€ข 10 tiers of increasingly derpy cats to discover โ€ข Physics-based gameplay โ€” every drop is different โ€ข Daily challenges with Game Center leaderboards โ€ข Streak tracking to keep you coming back โ€ข Combo scoring system with satisfying merge effects โ€ข Haptic feedback, particles, and screen shake โ€ข Catpedia collection with unique cat bios โ€ข Original music and sound effects

Screenshots

UDLR Sliding puzzles4 screens
Derpy Cat4 screens

Verdict

The call

The clearest difference is iOS requirement: UDLR Sliding puzzles at 13.0 against Derpy Cat's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

UDLR Sliding puzzles ships an update every 5 days, Derpy Cat every 4 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard1 real difference ยท 5 level
UDLR Sliding puzzles versus Derpy Cat: the parameters behind the verdict, then further details
ParameterUDLR Sliding puzzlesDerpy Cat
PriceFreeFree
Update frequencyEvery 5 daysEvery 4 days โ€” better
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better17.6
Further details โ€” not scored
Size38 MB38 MB
Age rating4+4+
Developerๆ™ฏ็ฏ ๆขLucas Moeller

In-app purchases

None

UDLR Sliding puzzles

No in-app purchases

None

Derpy Cat

No in-app purchases

Questions

Is UDLR Sliding puzzles free?
UDLR Sliding puzzles is free to download, with no in-app purchases.
Is Derpy Cat free?
Derpy Cat is free to download, with no in-app purchases.
Do UDLR Sliding puzzles or Derpy Cat have ads?
Both UDLR Sliding puzzles and Derpy Cat show ads.
Which is updated more often, UDLR Sliding puzzles or Derpy Cat?
UDLR Sliding puzzles ships an update every 5 days, and Derpy Cat every 4 days. Most recently, UDLR Sliding puzzles was updated on November 8, 2026 and Derpy Cat on October 31, 2026.

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