Comparison

空想水族館 vs Chigai Tap

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

Head to head
About

空想水族館

Discover a futuristic aquarium filled with whimsical creatures. Collect unique animal hybrids through a free gacha system and uncover the aquarium's secrets in a fun, story-driven game. Enjoy simple, casual gameplay perfect for passing the time.

Highlights
  • Collect unique hybrid creatures
  • Free gacha system
  • Futuristic aquarium setting
  • Story-driven gameplay
  • Tilt sensor mechanics
  • Casual time-killing game
Read full description

西暦20XX年、ありえないと思われていた水族館がついにオープン!? おさかな町にある、不思議な生き物たちが暮らす未来の水族館。 普通の水族館とは違う、その秘密とは…? いろいろな生き物と出会って空想水族館の秘密にせまろう!(漫画で進む面白ストーリー) 完全無料のガチャガチャを回して、可愛いく不思議な生きもの達を集めよう。 ほのぼの簡単な暇つぶし面白ゲームだよ。 うさぎ+ペンギンの「うさぺん」、ハムスター+あざらしの「ハムざらし」など様々なキャラクターが飛び出すよ。 端末の傾きセンサーに対応した様々な仕掛けもあるので、いろいろ試してね。おもちゃ感覚で遊べるよ。 ©はてなのたまご ライセンス:カミオジャパン、いたのくまんぼう アプリ提供:アーツプラネット 空想水族館 https://twitter.com/KUUSOU_official カミオジャパン https://twitter.com/kamiojapan いたのくまんぼう https://twitter.com/Ninebonz アーツプラネット https://twitter.com/Artsplanet_Inc

About

Chigai Tap

Features
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Chigai Tap is a simple brain-training puzzle game. Look carefully at a grid of characters and find the one character that is different from the rest. When you spot it, just tap it. The game uses letters, numbers, kana, kanji, and other look-alike characters. Even if you do not read Japanese, you can enjoy it as a visual puzzle about shape, balance, and tiny differences. Features: - Simple one-tap gameplay - Three difficulty levels: Easy, Normal, and Hard - Hint system that highlights the row or column containing the answer - Records for clear time, streaks, and total clears - Optional one-time Ad-Free purchase Great for short breaks, focus training, and quick visual puzzles.

Screenshots

空想水族館4 screens
Chigai Tap3 screens

Verdict

The call

The clearest difference is in-app purchases: 空想水族館 at none against Chigai Tap's 1. 空想水族館 also leads on iOS requirement (12.0 vs 15.0). Chigai Tap's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support 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. Chigai Tap sells 1 one-off in-app purchase. 空想水族館 asks for nothing beyond the download.

UpkeepUpdate frequency

空想水族館 ships an update every 2 months, Chigai Tap every 3 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
空想水族館 versus Chigai Tap: the parameters behind the verdict, then further details
Parameter空想水族館Chigai Tap
PriceFreeFree
Rating4.9 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyEvery 2 monthsEvery 3 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size395 MB4 MB
Age rating4+4+
DeveloperArtsPlanetHiromasa Takatsuka

In-app purchases

None

空想水族館

No in-app purchases

1 purchases

Chigai Tap

One-time1
  • Ad-Free$1.99

Questions

Is 空想水族館 free?
空想水族館 is free to download, with no in-app purchases.
Is Chigai Tap free?
Chigai Tap is free to download, with in-app purchases available.
Do 空想水族館 or Chigai Tap have ads?
Both 空想水族館 and Chigai Tap show ads.
Which is updated more often, 空想水族館 or Chigai Tap?
空想水族館 ships an update every 2 months, and Chigai Tap every 3 days. Most recently, 空想水族館 was updated on October 27, 2026 and Chigai Tap on October 25, 2026.

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