Comparison

Chicken Evolution | Merge vs PIYOMORI DX | chick stack

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

Head to head
About

Chicken Evolution | Merge

Combine chickens to evolve them into curious, exotic, and bizarre forms. Tap chickens to earn coins, buy new creatures, and discover numerous stages and endings in this unique merge and clicker game.

Highlights
  • Combine similar chickens
  • Discover new chicken forms
  • Earn chicken poop coins
  • Buy new creatures
  • Tap chickens for coins
  • Multiple stages and endings
  • Upgrades
Features
Read full description

Their ancestors are giant dinosaurs but they ended up as birds... that can barely fly. Chickens sure have reasons to be angry! But it's all about to change when mutations start taking place in a farm. The poultry is ready for takeoff! Combine chickens to evolve them and discover their most curious, exotic and bizarre forms! Start playing now the next game from the Evolution series by Tapps Games. A game that has brought the "Why did the chicken cross the road" question to a whole new perspective. Play now and find out! HOW TO PLAY • Drag and drop similar chickens to combine them and create new mysterious creatures • Use chicken poop coins to buy new creatures and make even more money • Alternatively, fiercely tap the chickens to make coins pop from pooping HIGHLIGHTS • Many stages and chicken species to discover • The unexpected mix of alpaca-like evolution, 2048 and incremental clicker games • Doodle-like illustrations • Many possible endings: find your own destiny • Upgrades, upgrades, upgrades…! More than ever! • No chickens were harmed in the making of this game, only developers (again) Discover what the future has in store for chickens besides becoming nuggets, the evolution is real! Download Chicken Evolution and have fun! Disclaimer: While this App is completely free to play, some additional content can be purchased for real money in-game. If you do not want to use this feature, please turn off in-app purchases in your device's settings. Like our page on Facebook and be the first to know about our upcoming games and updates! http://fb.com/tappshq

About

PIYOMORI DX | chick stack

A fun puzzle game where you stack cute chicks on a bowl. Easy tap and swipe controls make it accessible to everyone. Compete to stack as many as possible before they fall, with new features like ranking, coins for customization, and a supportive chick companion.

Highlights
  • Tap to make chicks fly
  • Swipe to rotate and move viewpoint
  • Stack chicks to prevent falling
  • Rank system for rewards
  • Earn coins for customization
  • Dress up a fellow chick companion
  • Changeable stage skins
Features
Read full description

"PIYOMORI" has evolved into a new deluxe version and is back. PIYOMORI DX is a puzzle game where you stack up chicks on a bowl and compete to see how many you can stack up. The game is easy to play with just a tap and swipe, so anyone can start playing right away. There are many new game features! (The first version of PIYOMORI was released in January 2012 and has been a popular app with over 6.4 million downloads in total.) ***** How to play ***** *Tap to make the chicks fly. *Swipe the table left and right to turn the bowl. *Swipe up and down the table to move the viewpoint vertically. The game ends when 10 chicks fall. Yellow and orange chicks will stick together. Yellow and orange chicks stick together, but orange chicks do not stick together. *New Feature 1: Rank You can gain experience and increase your user rank from game play. The higher your rank, the more coins and experience you can get, and the more special chicks appear. *New Feature 2: Coins You can gain coins from game play. With these coins, you can buy stage skins, clothes, charms, bombs, and new wallpapers. *New Feature 3: Fellow Chick From now on, there is a chick who supports you in your gameplay. The chick will bring you good luck charms and bombs that you can blow up chicks on the game result screen. In addition, you can dress up your fellow chick by combining over 100 different items to create your own unique chick. *New Feature 4: Stage Skins For each stage of the game, there is a stage skin that allows you to change the look of the stage! Depending on the skin you choose, the impression of the stage will change drastically. Make over your rice bowl into a beef bowl or a pork cutlet bowl!

Screenshots

Chicken Evolution | Merge4 screens
PIYOMORI DX | chick stack4 screens

Verdict

The call

The clearest difference is in-app purchases: PIYOMORI DX | chick stack at none against Chicken Evolution | Merge's 12. PIYOMORI DX | chick stack also leads on rating (5.0 vs 4.8). Chicken Evolution | Merge's advantage is ratings volume (3K vs 7). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Chicken Evolution | Merge sells 12 one-off in-app purchases. PIYOMORI DX | chick stack asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PIYOMORI DX | chick stack holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Chicken Evolution | Merge has 3K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 90% of Chicken Evolution | Merge's written reviews are positive against 93% of PIYOMORI DX | chick stack's.

UpkeepUpdate frequency

Chicken Evolution | Merge ships an update every 5 weeks, PIYOMORI DX | chick stack every 2 months. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
Chicken Evolution | Merge versus PIYOMORI DX | chick stack: the parameters behind the verdict, then further details
ParameterChicken Evolution | MergePIYOMORI DX | chick stack
PriceFreeFree
Rating4.8 (3K ratings)5.0 (7 ratings) — better
Positive reviews90.4% of reviews92.9% of reviews — better
Number of ratings3K — better7
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.5 — better
Further details — not scored
Size156 MB311 MB
Age rating9+4+
DeveloperTPG TECNOLOGIA DA INFORMACAO LTDAGam.eBB

Customer experience

Chicken Evolution | Merge

All ratings2,983 ratings
Positive94.8%
Neutral2.7%
Negative2.5%
Written reviews489 reviews
Positive90.4%
Neutral4.5%
Negative5.1%

PIYOMORI DX | chick stack

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews42 reviews
Positive92.9%
Neutral2.4%
Negative4.8%

Bugs and requests

Chicken Evolution | Merge

Reported bugs

2 issues
  • Game freezes when a crate falls
  • Unable to progress to new worlds after completing the universe

Requested features

4 requests
  • Add more evolution types and planets to explore
  • Implement an auto-merge feature to streamline gameplay
  • Reduce the frequency and intrusiveness of ads
  • Introduce a paid version with no ads or additional content

PIYOMORI DX | chick stack

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Chicken Evolution | Merge

One-time12
  • ads removal$0.99
  • pack of rubies$1.99
  • instant coins doubler$1.99
Show 9 more
  • small diamond pack$1.99
  • pack of diamonds$1.99
  • small frost gem pack$1.99
  • good diamond pack$4.99
  • big pack of rubies$5.99
  • income doubler$5.99
  • Trinket$6.99
  • starter bundle$9.99
  • great diamond pack$9.99
None

PIYOMORI DX | chick stack

No in-app purchases

Questions

Is Chicken Evolution | Merge free?
Chicken Evolution | Merge is free to download, with in-app purchases available.
Is PIYOMORI DX | chick stack free?
PIYOMORI DX | chick stack is free to download, with no in-app purchases.
Which has better reviews, Chicken Evolution | Merge or PIYOMORI DX | chick stack?
PIYOMORI DX | chick stack is rated higher. Chicken Evolution | Merge averages 4.8 out of 5 from 3K ratings, while PIYOMORI DX | chick stack averages 5.0 from 7 ratings.
Do Chicken Evolution | Merge or PIYOMORI DX | chick stack have ads?
Both Chicken Evolution | Merge and PIYOMORI DX | chick stack show ads.
Which is updated more often, Chicken Evolution | Merge or PIYOMORI DX | chick stack?
Chicken Evolution | Merge ships an update every 5 weeks, and PIYOMORI DX | chick stack every 2 months. Most recently, Chicken Evolution | Merge was updated on September 23, 2026 and PIYOMORI DX | chick stack on September 22, 2026.

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