Comparison

Deep Dive vs Yoakari

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

Head to head
About

Deep Dive

Features
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集中した時間の長さが、そのまま潜水艦の到達深度になります。 25分の集中で水深450m。90分なら1500m。深く潜るほど暗くなり、そこにしかいない深海生物と出会えます。集中を中断してアプリを離れると緊急浮上となり、その航海で捕らえた生物はすべて失われます。 実在の深海生物101種 マリアナ海溝の底に暮らすカイコウオオソコエビ、体長比で全魚類最大の牙を持つオニキンメ、鯨の骨だけを食べるホネクイハナムシ。すべて実在の生物で、それぞれに解説がついています。捕らえた生物は剥製として図鑑に収めるか、水槽で泳がせるか、港で売るかを選べます。 潜れる深さは、二つの要素で決まります コインで買える潜水艦の耐圧殻と、航海の回数だけで伸びる乗組員の胆力です。お金では買えない成長があります。海溝の最深部、チャレンジャー海淵の11,034mに到達するには、たくさんの航海が必要です。 集中のための音 低い環境音が途切れずに流れ、その上に泡の音がときどき乗ります。数分に一度、遠くで鯨が鳴きます。長時間かけっぱなしにする前提で設計してあり、耳が疲れる純音を含みません。周囲の物音を覆い隠す働きが期待できます。モノラルビートを含みますが、脳波への作用を主張するものではありません。 設定でオンオフが可能です。 ### そのほか - 5分から24時間まで、5分単位で設定できます - 電話や通知で一瞬離れても、90秒以内に戻れば航海は続きます - 潜った深さの累計を、東京スカイツリー何個分といった単位で表示します - 通信を行いません。データは端末内にのみ保存されます - 広告はありません --- 集中の深さを、水深で測る。

About

Yoakari

Features
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When you try to open an app you chose, a night town appears. Choose “Don’t open it” and one more window lights up. You can also choose “Open for 5 minutes.” Nothing is taken away — you simply don’t get a light. After five minutes the screen comes back. As lights add up, buildings appear: a bathhouse, an old bookshop, a café, a lantern alley, a lighthouse. You can name every building you build. ■ What you can do ・Choose which apps bring up the screen ・See how often you stopped and how often you opened, on a 7-day chart ・Collect 24 kinds of buildings, plus one that shows up only rarely ・Set the hours the screen can appear (one-time purchase) ■ Nothing is forced Yoakari never makes an app permanently unusable. Choose “Open for 5 minutes” and you can use it. It is one quiet beat, so the choice stays yours. ■ About your records Your counts and the names you give buildings stay on this iPhone. Nothing is sent to the developer. No account is required. There are no ads. ■ About the purchase “Opening Night” is a one-time payment. There is no monthly fee. The free version lets you choose one app and build six kinds of buildings.

Screenshots

Deep Dive4 screens
Yoakari4 screens

Verdict

The call

The clearest difference is in-app purchases: Deep Dive at none against Yoakari's 1. Deep Dive also leads on update cadence (every 5 days vs every 3 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. Yoakari sells 1 one-off in-app purchase. Deep Dive asks for nothing beyond the download.

UpkeepUpdate frequency

Deep Dive ships an update every 5 days, Yoakari every 3 weeks. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 4 level
Deep Dive versus Yoakari: the parameters behind the verdict, then further details
ParameterDeep DiveYoakari
PriceFreeFree
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone
Requires iOS16.4 — better17.4
Further details — not scored
Size34 MB2 MB
Age rating4+4+
DeveloperYUTO DOIMasato Oda

In-app purchases

None

Deep Dive

No in-app purchases

1 purchases

Yoakari

One-time1
  • Opening Night$5.99

Questions

Is Deep Dive free?
Deep Dive is free to download, with no in-app purchases.
Is Yoakari free?
Yoakari is free to download, with in-app purchases available.
Do Deep Dive or Yoakari have ads?
Neither Deep Dive nor Yoakari shows ads.
Which is updated more often, Deep Dive or Yoakari?
Deep Dive ships an update every 5 days, and Yoakari every 3 weeks. Most recently, Deep Dive was updated on October 8, 2026 and Yoakari on October 3, 2026.

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