Comparison

Bellyfish vs Slide Knockout

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

Head to head
About

Bellyfish

Embark on an endless underwater adventure with intuitive controls and beautiful graphics. Collect power-ups to battle enemies and unlock new heroes. Compete with friends on leaderboards and complete quests in this addictive swimmer game.

Highlights
  • Endless swimmer gameplay
  • Intuitive directional controls
  • Unlockable heroes
  • Unique power-ups
  • Game Center Leaderboards
  • Quests to complete
Features
Read full description

An endless adventure from the creators of iSlash! * Featured on the App Store in more than 100 countries * * * * * * * I’d highly recommend this game. The graphics are great, the gameplay is addictive, and it feels like every part of the app was thought through carefully. - AppAdvice A slickly produced, decently entertaining endless-climber - PocketGamer I can't believe how sensitive the move controls are. The graphics​ quality is great for such a small file size! And the game is addictive. - User Comment Controls on the iPhone are sensitive… Controls on the iPad are better. My top games on the iPad! High graphics. Cool concept. I recommend to everyone! - User Comment * * * * * * Swim freely with intuitive controls through beautiful underwater environments. Fight your evil enemies with unique and fun power-ups. Join the adventure and see how high you can go! FEATURES * An original endless swimmer with beautiful graphics and animations * Sensitive and intuitive controls to swim freely in all directions * Amazing heroes to unlock * Unique power-ups to fight your enemies * Funny surprises to add to the challenge * Score markers to compete with your friends * Lots of quests to complete​ * Game Center Leaderboards & Achievements Follow us on Twitter: http://twitter.com/BellyfishGame Join us on Facebook: http://facebook.com/BellyfishGame

About

Slide Knockout

Features
Read full description

Challenge other players! Slide Knockout is an online voxel style game inspired by the Penguin modes from Roblox. Your goal is to push other players out of the limited arena through physical interaction. All characters simulate regdoll physics. Fight with your rivals for a place on the playing field. Anyone who falls is eliminated... FEATURES: •Unlock the Game Boy to get fun skins. • Push other players out of the field (which is imperceptibly decreasing...). • Adjust the force of your shot. EVEN MORE FUN: •Play for free! •Play with your friends online! •Join many players from all over the world. Do you have any questions or suggestions? Contact us at loxickqq37@gmail.com

Screenshots

Bellyfish4 screens
Slide Knockout4 screens

Verdict

The call

The clearest difference is update cadence: Slide Knockout at every 6 days against Bellyfish's monthly. Bellyfish's advantage is iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases 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. Bellyfish sells 5 one-off in-app purchases and Slide Knockout sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Bellyfish ships an update monthly, Slide Knockout every 6 days. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Bellyfish versus Slide Knockout: the parameters behind the verdict, then further details
ParameterBellyfishSlide Knockout
PriceFreeFree
Rating4.2 (158 ratings) — better—
Positive reviews87.0% of reviews—
Number of ratings158 — better—
Update frequencyMonthlyEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size49 MB383 MB
Age rating4+4+
DeveloperDuello Iletisim Hizmetleri A.S.Andrey Kutuzov

Bugs and requests

Bellyfish

Reported bugs

8 issues
  • App crashes immediately after downloading
  • Crashes after playing once then boots out
  • Game freezes mid-play requiring restart
  • Tilt controls don't respond consistently
  • Calibration angle differs from gameplay angle
Show 3 more
  • Fish movement doesn't follow intended direction
  • Facebook connection not working for multiplayer
  • Progress loss when game freezes

Requested features

11 requests
  • More levels and content
  • Touch screen controls as alternative to tilt
  • Joystick/analog stick control option
  • Challenge missions with specific objectives
  • Dark mode gameplay
Show 6 more
  • Ability to use coins for meaningful upgrades
  • Auto-collect bubbles power-up
  • Faster background changes
  • Ocean sounds or relaxing music option
  • Multiplayer or competitive features
  • Save calibration settings between games

Slide Knockout

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

Bellyfish

One-time5
  • 5.000 Coin Pack$0.99
  • 50.000 Coin Pack$4.99
  • Coin Doubler$4.99
Show 2 more
  • 150.000 Coin Pack$9.99
  • 400.000 Coin Pack$19.99
4 purchases

Slide Knockout

One-time4
  • 50 Coins$0.99
  • 100 Coins$1.99
  • Remove ADs$1.99
Show 1 more
  • 250 Coinst$4.99

Questions

Is Bellyfish free?
Bellyfish is free to download, with in-app purchases available.
Is Slide Knockout free?
Slide Knockout is free to download, with in-app purchases available.
Do Bellyfish or Slide Knockout have ads?
Neither Bellyfish nor Slide Knockout shows ads.
Which is updated more often, Bellyfish or Slide Knockout?
Bellyfish ships an update monthly, and Slide Knockout every 6 days. Most recently, Bellyfish was updated on November 1, 2026 and Slide Knockout on October 25, 2026.

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