Comparison

Idle Pet vs BIG FISH! Idle Evolution

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

Head to head
About

Idle Pet

Build and evolve virtual pets from their skeletal structure. Grow organs from stem cells and unlock new animal creations. Experience a unique idle tycoon game focused on biological creation.

Highlights
  • Cell-by-cell pet creation
  • Organ growth from stem cells
  • Skeleton construction
  • Pet evolution simulator
  • Idle tycoon gameplay
  • Cute animal creator
Features
Read full description

Idle Pet - tap-tap idle construction 3d. Our pets are our friends! We love cute furry animals. But do you know what is the structure of the animal? Idle Pet is a skeleton game that will show you how the body of petshop inhabitants, starting with the very first cage. You will find a unique pumping pet. Create a living creature from scratch. Watch how organs pass into the body, just grow them from stem cells. Use powerups and boosters like a real idle tycoon. Evolution has created a dog for millions of years. And how soon will you make a person? You are waiting for cute animals creator simulator ready to run. Start playing for idli making right now!

About

BIG FISH! Idle Evolution

Features
Read full description

Start as a tiny tadpole. End as the biggest creature in the ocean. BIG FISH! is a relaxing tap-and-grow game. Every tap adds mass to your fish. Grow enough and it evolves into a new species: 30 in total, from a 2-gram tadpole to a 150-tonne blue whale. TAP TO GROW • Tap anywhere on the screen. Every tap makes your fish heavier. • Land critical taps for triple growth. • Watch your fish swim and turn in a living, animated ocean. EVOLVE 30 SPECIES • Guppy, goldfish, lionfish, shark, orca, blue whale and many more. • Every species is bigger than the last. • Evolution is automatic: reach the mass, become the fish. UPGRADE YOUR GROWTH • Earn coins as you play and spend them on five upgrades. • Grow faster per tap, per second and while you are away. KEEPS GROWING WHILE YOU'RE AWAY • Your fish keeps growing for up to 12 hours while the game is closed. • Come back, collect your reward and carry on. OUTGROW THE OCEAN • An ocean of 600 rivals ranked by mass: real players, plus ocean fish while players are few. • Swim past them one by one on your way to #1. FAIR AND SIMPLE • No ads. • No account and no sign-up. • Works offline. • Optional in-app purchases of gems speed up growth. Every species can be reached just by playing. How big can you get?

Screenshots

Idle Pet4 screens
BIG FISH! Idle Evolution4 screens

Verdict

The call

The clearest difference is ads: BIG FISH! Idle Evolution at none against Idle Pet's shown. BIG FISH! Idle Evolution also leads on update cadence (daily vs every 8 days). Idle Pet's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Idle Pet sells 10 one-off in-app purchases and BIG FISH! Idle Evolution sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Idle Pet ships an update every 8 days, BIG FISH! Idle Evolution daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Idle Pet versus BIG FISH! Idle Evolution: the parameters behind the verdict, then further details
ParameterIdle PetBIG FISH! Idle Evolution
PriceFreeFree
Rating4.2 (372 ratings) — better—
Positive reviews57.1% of reviews—
Number of ratings372 — better—
Update frequencyEvery 8 daysDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size238 MB188 MB
Age rating9+4+
DeveloperAA2G1 LTDSergey Li

Bugs and requests

Idle Pet

Reported bugs

10 issues
  • Game stuck on loading screen or title screen
  • Game won't load after reinstalling
  • Black screen on startup
  • Game crashes at 90% loading bar
  • Clicking 'no ads' option still shows ads
Show 5 more
  • Clicking X on ads doesn't work
  • Clicking decline on reward still shows ad
  • Gift popup has no close button
  • Clicking sound persists when nothing to build
  • Upgrade button automatically triggers ads repeatedly

Requested features

14 requests
  • Add lion to the game
  • Add frog, raccoon, snake, and fox animals
  • Add tortoise and rabbit
  • Add capybara
  • Replace unicorn with horse or narwhal
Show 9 more
  • Add leaderboard system
  • Create sequel with more animals (Idle Animals 2)
  • Add domestic and wild animal categories
  • Allow customizable upgrade increments (not just 5)
  • Add X button to close gift/present popups
  • Reduce or remove forced ads
  • Implement ad-free premium version at reasonable price
  • Add pinch gesture for bones like cells
  • Lower age rating from 9+ to 5+

BIG FISH! Idle Evolution

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Idle Pet

One-time10
  • Open Human$0.99
  • 60 Crystals$1.99
  • Open Girl$1.99
Show 7 more
  • Disable Ads$2.99
  • 120 Crystals$2.99
  • 300 Crystals$4.99
  • Open Unicorn$4.99
  • Open Elephant$4.99
  • 700 Crystals$8.99
  • 2000 Crystals$23.99
5 purchases

BIG FISH! Idle Evolution

One-time5
  • 100 Gems$0.99
  • Starter Bundle$2.99
  • 550 Gems$4.99
Show 2 more
  • 1,200 Gems$9.99
  • 2,600 Gems$19.99

Questions

Is Idle Pet free?
Idle Pet is free to download, with in-app purchases available.
Is BIG FISH! Idle Evolution free?
BIG FISH! Idle Evolution is free to download, with in-app purchases available.
Do Idle Pet or BIG FISH! Idle Evolution have ads?
Idle Pet shows ads; BIG FISH! Idle Evolution does not.
Which is updated more often, Idle Pet or BIG FISH! Idle Evolution?
Idle Pet ships an update every 8 days, and BIG FISH! Idle Evolution daily. Most recently, Idle Pet was updated on November 3, 2026 and BIG FISH! Idle Evolution on October 31, 2026.

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