Comparison

Area Quiz vs 暗号機

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

Head to head
About

Area Quiz

This math quiz app offers geometry puzzles and brain teasers with five difficulty levels. It helps improve logic, IQ, and mental math skills through engaging challenges. Draw notes, use hints, and share progress while enjoying offline play.

Highlights
  • Five difficulty levels
  • Unlock levels by solving
  • Draw notes on screen
  • Hints available
  • Offline play
  • Share progress
Features
Read full description

No complex calculations needed. The side lengths and areas required for solutions are always whole numbers. The key is your perspective and thinking skills! There are 5 difficulty levels, starting with easy questions. No need to be nervous! In the later stages, we’ve included some brain-teasing challenges. Enjoy the satisfaction of solving tough puzzles in this brain training game. It feels like a mix of puzzle games and brain teasers, offering a fun way to play! Features: - Five difficulty levels - Unlock levels by solving questions - Play any question in a level - Draw notes on the screen with your finger - Hints are available for all questions - Share images of your progress Explore the world of geometry with area and shape puzzles in this fun and challenging math quiz app. Test your logic and IQ with hundreds of questions designed to boost your brain power. Each level presents a new dimension of math games, from easy to hard, allowing you to practice and master your skills. Whether you're solving a square problem or a maze-like puzzle, this app is perfect for education and study. Train with brain teasers, improve your math speed, and become a true solver with this ultimate math drill! It’s like a cross math puzzle designed to boost your mental abilities. Perfect for anyone wanting to learn, this app offers a unique way to practice mental math and enhance problem-solving skills. Join the Quiz of Kings and take your brain to the next level with this powerful math training tool. The download is free, so feel free to give it a try! Note: The diagrams may differ from actual proportions to prevent solving by visual cues. Note: Ads are displayed in the game. You can remove ads through in-app purchases. Note: This game can be played offline. However, to access hint videos, you will need to be online as they require downloading.

About

暗号機

Features
Read full description

くろねこ研究所 KuronekoLab. エニグマン暗号器 平文を入力して暗号文の作成、暗号文を入力して平文への復号を行います。 使い方 暗号文を送る人 ①暗号のキーを選択してください。I:□ II:□ III:□ ②上部の平文Boxに暗号化したい平文を入力してください。 ③暗号化ボタンをTap! ④下部のBoxの暗号文をコピーして送ってください。 ⑤暗号文を受け取った人に①のキーをこっそり教えてくださいね。 暗号文を受け取った人 ①受取った暗号のキーを設定してください。I:□ II:□ III:□ ②下部の暗号文Boxに受取った暗号文を入力してください。 ③復号化ボタンをTap! ④上部の平文Boxに平文が現れます。 やりとりする文章を暗号化することにより内容が隠蔽されます。 暗号器の仕組みは、かつて第二次世界大戦中にドイツ軍が運用した傑作暗号機エニグマの原理を採用しています。 エニグマ暗号機は、1918年にドイツの発明家アルトゥール・シェルビウスによって発明された電気機械で3枚のローター(ドラム)で暗号/復号を制御します。 大戦中の1939年に、イギリスのアラン・チューリングらによってエニグマの解読に成功しドイツは敗戦しました。 エニグマン暗号器の仕組み 文字を暗号化/復号化する文字ドラムは3本あります。 各文字ドラムは本家エニグマのごとく動作します。 変換できる文字は、半角英数字記号と全角の数字記号、全角ひらがなを採用しています。 文字ドラムは以下の通り。 ・数字記号 ・英文字 ・全角数字記号 ・全角ひらかな ・全角カタカナ 5種類のドラムが各3ドラムづつ存在し、各文字は各文字ドラムの中で暗号化されます。 例: 英文字⇨英文字 ひらがな⇨ひらがな ドラムに存在しない文字は平文のまま無変換で現れます。 対戦中のイギリスのようにエニグマンを解析してみてください。 さて、どんな暗号ドラムを使用しているでしょう...

Screenshots

Area Quiz4 screens
暗号機1 screens

Verdict

The call

The clearest difference is in-app purchases: 暗号機 at none against Area Quiz's 2. 暗号機 also leads on update cadence (every 5 days vs every 5 months) and iOS requirement (13.0 vs 15.0). 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. Area Quiz sells 2 one-off in-app purchases. 暗号機 asks for nothing beyond the download.

UpkeepUpdate frequency

Area Quiz ships an update every 5 months, 暗号機 every 5 days. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Area Quiz versus 暗号機: the parameters behind the verdict, then further details
ParameterArea Quiz暗号機
PriceFreeFree
Rating4.9 (11 ratings) — better—
Positive reviews63.0% of reviews—
Number of ratings11 — better—
Update frequencyEvery 5 monthsEvery 5 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size117 MB50 MB
Age rating4+4+
DeveloperWasabi Applicationstakayuki atsumi

In-app purchases

2 purchases

Area Quiz

One-time2
  • Unlock All Hints$0.99
  • Ads Free$1.99
None

暗号機

No in-app purchases

Questions

Is Area Quiz free?
Area Quiz is free to download, with in-app purchases available.
Is 暗号機 free?
暗号機 is free to download, with no in-app purchases.
Do Area Quiz or 暗号機 have ads?
Both Area Quiz and 暗号機 show ads.
Which is updated more often, Area Quiz or 暗号機?
Area Quiz ships an update every 5 months, and 暗号機 every 5 days. Most recently, Area Quiz was updated on October 17, 2026 and 暗号機 on October 11, 2026.

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