Comparison

Ocean Grab vs Koi Coins

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

Head to head
About

Ocean Grab

Embark on an underwater adventure as a brave ocean creature, collecting sun coins while skillfully dodging electric eels. Unlock new characters with unique abilities as you progress. Enjoy a seamless experience with iCloud support and no interruptions.

Highlights
  • Collect sun coins
  • Dodge electric eels
  • Unlockable ocean characters
  • iCloud enabled scores
  • No ads
  • No in-app purchases
Features
Read full description

Ocean Grab® for iPhone and iPad. Join your favorite ocean creature and grab as many sun coins as you can while dodging those slithering electric eels! In the deep blue ocean, there lives a brave ocean creature named Hippurus. It is Hippurus’s duty to protect the ocean and make sure the sacred sun coins don’t get away and into the wrong hands. Hippurus has to grab the sun coins as they pass him, but it’s not easy because lately there’s been a growing number of sneaky electric eels trying to overtake his ocean. Hippurus must dodge the eels or he will get an electric shock that ends the game. Hippurus isn’t alone though. He has many ocean creature friends that you can choose from, but they must be unlocked first. The more sun coins you grab, the more characters unlock. - Multiple characters with individual names to choose from - iCloud enabled so you can view your scores on all your devices - No ads - No in-app purchases

About

Koi Coins

Collect coins to feed adorable Koi carps and watch them grow. Navigate obstacles, customize your pond, and unlock premium Koi varieties. A relaxing game of growth and collection.

Highlights
  • Feed Koi carps coins
  • Grow and collect Koi
  • Avoid obstacles
  • Customize pond environment
  • Unlock premium Koi collections
  • Collect Koi eggs
Read full description

Meet your new Coin-loving Koi carps! These Koi carps love coins so much they eat it! Watch these Koi carps grow as you collect coins. Move your way and avoid Raccoons, Spikes, and more! Use your collected gold coins and koi eggs to buy more Koi carps. Customize your pond and watch your koi carps swim as they wander inside your screen. Check out our premium koi carps "THE KOIJU COLLECTIONS"! Classic Koi Carps included: -KOHAKU -TAISHO SANKE -SHOWA SANSHOKU -TANCHO -SHIRO UTSURI -HI UTSURI -KI UTSURI -YAMABUKI OGON -ORENJI OGON -KARASUGOI -BEKKO Koiju Collections: -KOIJIRA -KOIJU TYPE B -KOIJU TYPE H

Screenshots

Ocean Grab4 screens
Koi Coins4 screens

Verdict

The call

The clearest difference is price: Koi Coins at Free against Ocean Grab's $0.99. Koi Coins also leads on update cadence (every 10 days vs every 14 months) and iOS requirement (11.0 vs 13.5). Ocean Grab's advantage is in-app purchases (none vs 6). On rating, review sentiment, ratings volume 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

Koi Coins is free to download; Ocean Grab costs $0.99 up front. Koi Coins sells 6 one-off in-app purchases. Ocean Grab asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Ocean Grab against 5.0 for Koi Coins. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Ocean Grab ships an update every 14 months, Koi Coins every 10 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Ocean Grab versus Koi Coins: the parameters behind the verdict, then further details
ParameterOcean GrabKoi Coins
Price$0.99Free — better
Rating5.0 (2 ratings)5.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings24 — better
Update frequencyEvery 14 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.511.0 — better
Further details — not scored
Size16 MB110 MB
Age rating4+4+
DeveloperNUMBERWING, INC.Rod Matthew Musni

Customer experience

Ocean Grab

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Koi Coins

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Ocean Grab

No in-app purchases

6 purchases

Koi Coins

One-time6
  • 7500 Coins$0.99
  • 20000 Coins$1.99
  • 100 Eggs$1.99
Show 3 more
  • 50,000 Coins$2.99
  • 250 Eggs$2.99
  • 750 Eggs$3.99

Questions

Is Ocean Grab free?
Ocean Grab costs $0.99, with no in-app purchases.
Is Koi Coins free?
Koi Coins is free to download, with in-app purchases available.
Which has better reviews, Ocean Grab or Koi Coins?
Ocean Grab and Koi Coins are both rated 5.0 out of 5 on the App Store, from 2 and 4 ratings respectively.
Do Ocean Grab or Koi Coins have ads?
Neither Ocean Grab nor Koi Coins shows ads.
Which is updated more often, Ocean Grab or Koi Coins?
Ocean Grab ships an update every 14 months, and Koi Coins every 10 days. Most recently, Ocean Grab was updated on November 1, 2026 and Koi Coins on November 3, 2026.

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