Comparison

SHINKAI 深海 vs KEEPYBOO

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

Head to head
About

SHINKAI 深海

Features
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数字は「いちばん近い魔物までの距離」。マインスイーパーの数字を再発明した、深海のソナーパズル。 酸素が尽きる前に真珠を集め、さらに深く潜るか、浮上して記録を残すか。 すべての盤面は「当て推量なしで解ける」ことを機械検証済み。運ゲーはありません。 【遊びかた】 ・タップ=ソナー照射(酸素-1)。空きマスなら数字は最寄りの魔物までの距離 ・距離のぶんだけ周囲は安全。ソナーの波紋が連鎖して海底をひらく ・魔物を踏むと酸素-4。長押しでマーキングして回避しよう ・真珠を見つけると酸素+3。層の真珠を集めきると「潜降ゲート」がひらく 【潜るか、還るか】 ・浮上すればスコア確定。潜降すれば真珠の価値x1.5、ただし魔物も増える ・酸素切れは緊急浮上、スコア半減 【特長】 ・全盤面がロジックで解けることを出題前に検証済み(初手も必ず安全) ・デイリーダイブ: 毎日世界共通の海。連続記録に挑戦 ・広告なし / データ収集なし / オフラインOK / 縦持ち片手 クラシックなマインスイーパーの推理が好きな人、Dragonsweeper系の判断が好きな人、どちらにも「初めてなのに懐かしい」体験を。

About

KEEPYBOO

Features
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Find the ghosts hiding on the board, using nothing but the numbers. Nothing is left to luck. All 2,000 puzzles solve by reasoning, start to finish. When you get stuck, a hint shows you why the next move is forced. ■ The rules A number in a cell counts the ghosts in the eight cells around it. A number at the edge of a row or column counts the ghosts in that line. Mark the cells you've ruled out with an ×. Reveal a cell with no ghost in it and you lose one of three lives. Lose all three and you start the puzzle over — on the spot, nothing else lost. That's everything. The first puzzle teaches you as you play it, so you can start without reading any of this. ■ If you love Sudoku, nonograms or logic grids KEEPYBOO never asks you to guess: the numbers always give you a logical next move. 2,000 puzzles, from gentle to expert, and the first one teaches you how. · One wrong tap doesn't end the board (three lives, as above) · Nothing is a coin flip. Every one of the 2,000 puzzles has been checked to solve by reasoning alone, all the way to the end · Rows and columns have totals too, so you can work the whole board ■ You don't have to be a maths person The 160 EASY puzzles are built entirely from moves where a single number tells you the answer. Higher sets add new kinds of move: comparing two numbers, then assuming a ghost is somewhere and finding the contradiction. The boards grow, but that isn't where the difficulty comes from. Every technique is written up in the Tips library, one at a time, illustrated on a real board. ■ Solve it, and a second puzzle opens Come back to a puzzle you solved by pure deduction and the ghosts now show faintly. The question is no longer where they are, but in what order to catch them. On the same board, the order can change the score several times over. Only the best order earns the diamond. Finish one with no hints and no mistakes and you earn a crown. Every one of the 2,000 puzzles can be solved, and then mastered. ■ 2,000 puzzles, ten sets EASY, NORMAL, HARD, EXPERT and MASTER — 1,110 puzzles — are free. Past those are EXTREME (690) and ULTIMATE (200), and the first several puzzles of each are free to try. A small board takes a few minutes; a large one takes as long as you like. Every puzzle is saved on its own, so you can go a little at a time. ■ At your own pace, for the long run No timer. Nothing that compares you with friends. Take a break for a while — your progress and everything you've collected stay just as they were. Just one puzzle today is fine. It's a game for working through 2,000 puzzles, little by little, at your own speed. ■ The ghosts, and things to collect Keepy, Mimo, Zuzu, Piri and Tobi. They chatter away beside you while you think. As you go, new wallpaper themes, sound sets and ghost friends join you. Milestones in puzzles solved, diamonds and crowns, your Logic Rating — more than 50 rewards mark the way on a long journey. ■ Ads and money 1,110 puzzles are free — no time limit, no play limit on any of them. There are ads: occasional ones between rounds, and a video when you ask for a hint. You can buy them away. Everything is a one-time purchase. There is no subscription. · EXTREME (690 puzzles) · ULTIMATE (200 puzzles) · Remove ads ■ Also · Plays with no connection (only the ads need one) · Progress backs itself up. Link an Apple or Google account and it follows you to a new phone · Available in 14 languages Bit K.K. (Bit Corp.)

Screenshots

SHINKAI 深海2 screens
KEEPYBOO4 screens

Verdict

The call

The clearest difference is in-app purchases: SHINKAI 深海 at none against KEEPYBOO's 10. SHINKAI 深海 also leads on ads (none vs shown). KEEPYBOO's advantage is update cadence (every 2 days vs every 4 days) and device support (3 vs 1). On price 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. KEEPYBOO sells 10 one-off in-app purchases. SHINKAI 深海 asks for nothing beyond the download.

UpkeepUpdate frequency

SHINKAI 深海 ships an update every 4 days, KEEPYBOO every 2 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

Scorecard5 real differences · 1 level
SHINKAI 深海 versus KEEPYBOO: the parameters behind the verdict, then further details
ParameterSHINKAI 深海KEEPYBOO
PriceFreeFree
Update frequencyEvery 4 daysEvery 2 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size1 MB99 MB
Age rating4+9+
DeveloperShota Katsuyama株式会社ビット

In-app purchases

None

SHINKAI 深海

No in-app purchases

10 purchases

KEEPYBOO

One-time10
  • Theme: Halloween$0.99
  • Theme: Toy Box$0.99
  • Theme: Comic Hero$0.99
Show 7 more
  • Theme: Pixel Castle$0.99
  • Sound: Koto Strings$0.99
  • Sound: Water Drops$0.99
  • Sound: 80s Ghost$0.99
  • ULTIMATE Pack$1.99
  • EXTREME Pack$3.99
  • Remove Ads$4.99

Questions

Is SHINKAI 深海 free?
SHINKAI 深海 is free to download, with no in-app purchases.
Is KEEPYBOO free?
KEEPYBOO is free to download, with in-app purchases available.
Do SHINKAI 深海 or KEEPYBOO have ads?
KEEPYBOO shows ads; SHINKAI 深海 does not.
Which is updated more often, SHINKAI 深海 or KEEPYBOO?
SHINKAI 深海 ships an update every 4 days, and KEEPYBOO every 2 days. Most recently, SHINKAI 深海 was updated on October 31, 2026 and KEEPYBOO on November 6, 2026.

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