Ocean Grab vs Koi Coins
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- Collect sun coins
- Dodge electric eels
- Unlockable ocean characters
- iCloud enabled scores
- No ads
- No in-app purchases
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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
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.
- Feed Koi carps coins
- Grow and collect Koi
- Avoid obstacles
- Customize pond environment
- Unlock premium Koi collections
- Collect Koi eggs
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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
Verdict
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
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.
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.
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.
| Parameter | Ocean Grab | Koi Coins |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (2 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 14 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.5 | 11.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | NUMBERWING, INC. | Rod Matthew Musni |
Customer experience
Ocean Grab
Koi Coins
In-app purchases
Ocean Grab
No in-app purchases
Koi Coins
- 7500 Coins$0.99
- 20000 Coins$1.99
- 100 Eggs$1.99
Show 3 moreShow fewer
- 50,000 Coins$2.99
- 250 Eggs$2.99
- 750 Eggs$3.99









