Comparison

Bellyfish vs Rex Run

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

Rex Run

Embark on a thrilling prehistoric chase as a T-Rex pursues you through a vibrant jungle. Dodge traps, collect coins, and unleash primal power to overcome obstacles. Test your reflexes and aim for your highest score in this action-packed endless runner.

Highlights
  • Endless jungle running
  • T-Rex pursuit
  • Dodge traps and obstacles
  • Collect coins
  • Unleash Primal Mode
  • Encounter various dinosaurs
Features
Read full description

Don't look back. The chase is on! Run for your life in Rex Run, a prehistoric endless runner with a ferocious T-Rex on your tail. Dodge traps, collect coins, and race through a wild jungle filled with prehistoric creatures. Along the way, you'll encounter dinosaurs including Triceratops, Parasaurolophus, Pachycephalosaurus, Stegosaurus, Brachiosaurus, and even Pteranodon soaring overhead. Every run brings new danger to dodge and new obstacles to overcome. UNLEASH YOUR PRIMAL SIDE Build Primal Energy and unleash Primal Mode to smash through obstacles in your path. Turn a desperate escape into a jungle rampage! MAKE EVERY RUN COUNT Keep your reflexes sharp as you dodge danger, survive prehistoric encounters, and chase your next personal best. One more jump. One more narrow escape. How far can you run? The jungle is wild. The dinosaurs are everywhere. The chase is relentless. Run. Privacy Policy - https://rexrunapp.com/privacy Terms of Use - https://rexrunapp.com/terms

Screenshots

Bellyfish4 screens
Rex Run4 screens

Verdict

The call

The clearest difference is ads: Bellyfish at none against Rex Run's shown. Bellyfish also leads on iOS requirement (8.0 vs 15.0). Rex Run's advantage is update cadence (every 3 days vs monthly) and review sentiment (100% vs 87%). On price, in-app purchases, monetization model 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 Rex Run sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Bellyfish ships an update monthly, Rex Run every 3 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Bellyfish versus Rex Run: the parameters behind the verdict, then further details
ParameterBellyfishRex Run
PriceFreeFree
Rating4.2 (158 ratings) — better—
Positive reviews87.0% of reviews100.0% of reviews — better
Number of ratings158 — better—
Update frequencyMonthlyEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.0
Further details — not scored
Size49 MB287 MB
Age rating4+9+
DeveloperDuello Iletisim Hizmetleri A.S.Octane Software

Customer experience

Bellyfish

All ratings158 ratings
Positive77.2%
Neutral12.0%
Negative10.8%
Written reviews162 reviews
Positive87.0%
Neutral3.7%
Negative9.3%

Rex Run

Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Rex Run

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
10 purchases

Rex Run

One-time10
  • 7k coins$0.99
  • 40 gems$0.99
  • 25k coins$2.99
Show 7 more
  • 150 gems$2.99
  • 325 gems$4.99
  • 100k coins$7.99
  • 800 gems$9.99
  • 250,000 coins$14.99
  • 1800 gems$19.99
  • 500k coins$24.99

Questions

Is Bellyfish free?
Bellyfish is free to download, with in-app purchases available.
Is Rex Run free?
Rex Run is free to download, with in-app purchases available.
Do Bellyfish or Rex Run have ads?
Rex Run shows ads; Bellyfish does not.
Which is updated more often, Bellyfish or Rex Run?
Bellyfish ships an update monthly, and Rex Run every 3 days. Most recently, Bellyfish was updated on November 1, 2026 and Rex Run on October 30, 2026.

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