Comparison

理牌無用 vs Ruin Dive

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

Head to head
About

理牌無用

Features
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■理牌無用の特徴 1.新感覚!麻雀で脳トレ! 理牌せずに手牌の並びがバラバラの状態で、問題の牌がロンかどうかを頭の中で瞬時に判断するゲームです。 麻雀力をアップしつつ、脳トレもできます。 2.本格的な脳トレができる 限られた時間で、いかに正しく待ちを見抜けれるかを競うクイズです。 いろいろな待ちが次々に出題されるなか、徐々に時間は短くなっていきます。 雀力、判断力、瞬発力など多くの力を求められるため、これらを訓練できるトレーニングアプリにもなります。 3.無料 課金なしで楽しめます。 4.縦画面・横画面両方に対応 大画面でプレイできる横画面だけでなく、縦画面にも対応しています。 片手でさっと操作できますので、電車での時間やスキマ時間にどうぞ。 5.初心者向けチュートリアル実装 ゲームの操作を丁寧にチュートリアル形式で解説しています。 まずはこちらをご覧ください。 6.ランキング対応 全国ランキングに対応しています。 ぜひ、連チャン数No1を目指してください!

About

Ruin Dive

Features
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Minesweeper meets roguelite risk and reward. Numbers show how many traps surround each tile, just like classic Minesweeper. But in Ruin Dive, your goal is not only to survive—you dig for hidden treasure and decide when to retreat. The deeper you push, the more you can win. Trigger a trap and you lose the treasure you're carrying. SHORT EXPEDITIONS • Choose a 3-room quick run or a 5-room deep run • Find treasure in each room, then retreat to bank your score • Take your loot with you or risk everything for one more dig TOOLS AND CHARMS • Divination Stone: detects and marks one trap • Echo Flute: reveals every weathered number • Torch: scans a 2x2 area for safe tiles and traps • Charm: protects you from one trap RUIN HAZARDS • Guardians that drop relics when surrounded • Cave-ins that turn revealed numbers into unknown tiles • Weathered clues that you must reconstruct through logic Perfect for players who enjoy Minesweeper, logic puzzles, short score runs, and roguelites with meaningful risk. Play free and offline.

Screenshots

理牌無用4 screens
Ruin Dive4 screens

Verdict

The call

The clearest difference is in-app purchases: 理牌無用 at none against Ruin Dive's 1. Ruin Dive's advantage is update cadence (every 10 days vs every 7 months). 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. Ruin Dive sells 1 one-off in-app purchase. 理牌無用 asks for nothing beyond the download.

UpkeepUpdate frequency

理牌無用 ships an update every 7 months, Ruin Dive every 10 days. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 4 level
理牌無用 versus Ruin Dive: the parameters behind the verdict, then further details
Parameter理牌無用Ruin Dive
PriceFreeFree
Update frequencyEvery 7 monthsEvery 10 days — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size14 MB42 MB
Age rating4+4+
DeveloperSaki InoueShimmoto Kotaro

In-app purchases

None

理牌無用

No in-app purchases

1 purchases

Ruin Dive

One-time1
  • 広告を削除$2.99

Questions

Is 理牌無用 free?
理牌無用 is free to download, with no in-app purchases.
Is Ruin Dive free?
Ruin Dive is free to download, with in-app purchases available.
Do 理牌無用 or Ruin Dive have ads?
Both 理牌無用 and Ruin Dive show ads.
Which is updated more often, 理牌無用 or Ruin Dive?
理牌無用 ships an update every 7 months, and Ruin Dive every 10 days. Most recently, 理牌無用 was updated on October 16, 2026 and Ruin Dive on October 3, 2026.

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