BIG FISH! Idle Evolution is a games app developed by Sergey Li.
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App Information
BIG FISH! Idle Evolution is freely available from the App Store. The app size is 187.68 MB. The latest version available is 1.0.2. The last update was on October 15, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since October 2026.
BIG FISH! Idle Evolution is made and published by
Sergey Li.
AppBrain is an independent app data site and isn't affiliated with Sergey Li.
The app name, icon, screenshots and description belong to Sergey Li and are shown as published on the App Store.
Description by Sergey Li(from the App Store)
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.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.