Comparison

Koinobore vs 深海8000

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

Head to head
About

Koinobore

Features
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Perfect for Children's Day! In Japan, families celebrate Children's Day on May 5 by flying koinobori, colorful carp streamers, with the wish that their children grow up strong. The streamers are linked to an old legend: a carp that swims all the way up a waterfall becomes a dragon. In this game, parents and children can play through that legend together. ■ A picture-book story On Children's Day, the littlest red koinobori flies off from a family's garden. It climbs a waterfall, rises above the clouds, reaches the night sky, and finally becomes a dragon. Full-screen illustrations tell the story, and you can skip it anytime. ■ Easy to play Tap to swim up. Swipe to dodge. That's it! ■ Normal Mode and Kids Mode - Normal Mode: dodge the blockers and climb. A real challenge! - Kids Mode: falling is OK, so even little children can reach the dragon ending ■ Stages - Stage 1: Waterfall - Stage 2: Above the Clouds - Stage 3: Night Sky (clear it to see the dragon ending) - Endless Climb: how high can you go? ■ More to enjoy - Build combos for a high score - 8 looks for your koinobori - 24 Star Cards to collect ■ For parents - Ads appear only as a banner at the bottom of the title screen, and sometimes as a full-screen ad after tapping "Play again" on the results screen. No ads appear during play. - Tap "Pause" to pause the game at any time. - Game records are saved only on this device. Each play takes 30 seconds to 2 minutes. Perfect for families around Children's Day!

About

深海8000

Features
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指一本で潜水艇を操縦し、海の生き物を迎えに行こう。 連れ帰った生き物は水槽でおしゃべりし、お客さんを呼んでくれる。 来館収入で船を改良して、めざすは水深8000m。 ■ 自分で操縦して迎える 指一本で潜水艇を動かし、生き物に近づいてアームで回収。大物には引っ張られる! ■ 実在の深海生物47種 ラブカ、リュウグウノツカイ、シーラカンス、マリアナスネイルフィッシュ……。深く潜るほど暗くなり、見たことのない姿に出会えます。 ■ しゃべる水槽 連れ帰った生き物は大きな水槽で泳ぎ、休み、おしゃべり。拡大すると会話が読めます。気に入った眺めは写真にして共有できます。 ■ 人と大きさくらべ 図鑑で身長1.7mの人と並べて、大物の大きさを実感。 ■ 留守中も来館収入 閉じている間もお客さんが来てお金が貯まります。そのお金で潜水艦を強くして、もっと深くへ。 ■ 広告は自分で押した時だけ バナー広告も、遊んでいる途中に割り込む広告もありません。 任意の広告による資金ボーナスと留守中収入2倍、買い切りの追加効果、繰り返し購入できる資金チャージを用意しています。遊ぶのに広告の視聴や購入は必須ではありません。 ゲームの進行は端末内に保存します。アプリ独自のゲーム進行のiCloud同期はありません。

Screenshots

Koinobore4 screens
深海80004 screens

Verdict

The call

The clearest difference is in-app purchases: Koinobore at none against 深海8000's 7. 深海8000's advantage is update cadence (every 11 days vs every 5 weeks). On price, ads, device support and iOS requirement 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. 深海8000 sells 7 one-off in-app purchases. Koinobore asks for nothing beyond the download.

UpkeepUpdate frequency

Koinobore ships an update every 5 weeks, 深海8000 every 11 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 4 level
Koinobore versus 深海8000: the parameters behind the verdict, then further details
ParameterKoinobore深海8000
PriceFreeFree
Update frequencyEvery 5 weeksEvery 11 days — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size96 MB71 MB
Age rating4+4+
DeveloperKentaro MiuraRiki Kamei

In-app purchases

None

Koinobore

No in-app purchases

7 purchases

深海8000

One-time7
  • 資金チャージ$1.99
  • 初心者探索パック$2.99
  • 留守中収入2倍$2.99
Show 4 more
  • 水族館応援パック$3.99
  • 広告スキップ$3.99
  • 来館収入2倍$3.99
  • 探索スタートセット$4.99

Questions

Is Koinobore free?
Koinobore is free to download, with no in-app purchases.
Is 深海8000 free?
深海8000 is free to download, with in-app purchases available.
Do Koinobore or 深海8000 have ads?
Both Koinobore and 深海8000 show ads.
Which is updated more often, Koinobore or 深海8000?
Koinobore ships an update every 5 weeks, and 深海8000 every 11 days. Most recently, Koinobore was updated on November 9, 2026 and 深海8000 on November 10, 2026.

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