ホシオの算数クエスト 3年

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Everyone
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Everyone
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About this app

🌊 "Hoshio's Math Quest: Grade 3" - A drill RPG covering the learning content of 3rd grade math

The main character is Hoshio, a light blue whale who has jumped into the world of math.

Solve math problems in multiple-choice quizzes and master 3rd grade math with Hoshio!

*This app is designed for parents to choose for their children. Parents/adults should make decisions regarding downloading, installing, and displaying advertisements.


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■ Includes all 18 units and over 3,240 questions from the textbook
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【Numbers and Calculations】
 • Numbers up to 10,000
 • Addition and Subtraction (3-digit)
 • Multiplication (1-digit/2-digit)
 • Division (No Remainder/With Remainder)
 • Fractions (Addition and Subtraction of Same Denominator, Improper Fractions, Mixed Numbers)
 • Addition and Subtraction of Decimals
 • Large Numbers (The Basis for Billions)

【Geometry】
 • Circles and Spheres
 • Triangles (Isosceles and Equilateral Triangles)

【Measurement】
 • Length (km and m)
 • Weight (g and kg)
 • Time (Seconds, Minutes, Hours)

【Data Utilization】
 • Tables and Bar Graphs

【Other】
 • Equations Using □

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■ Three Ways to Play
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✏️ Practice Mode: Challenge as many times as you like per day
🏆 Main Mode: Once a day, answer 5 questions correctly in a row to earn a bronze, silver, or gold badge
👾 Monster Battle: Challenge the unit boss with a silver medal or higher, and collect them in the encyclopedia

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■ Features of Hoshio
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💰 Completely Free (No in-app purchases)
🛡️ No account registration or collection of personal information
📱 Contains video ads

"Let's have fun mastering math with Hoshio-kun!"

Recommended Age: 13 years and older
Updated on
Jul 2, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit

What’s new

🌊 リワード動画広告の追加と対象年齢の見直しに伴うアップデート

✏️ 全18単元・3,240問の小3算数ドリル
🏆 5問連続正解で銅/銀/金のバッジ獲得
👾 単元ごとのモンスターバトル
📖 倒したモンスターは図鑑にコレクション

📱 動画広告があります
🛡️ アカウント登録・個人情報の収集なし・アプリ内課金なし

対象年齢: 13歳以上(保護者と一緒にご利用ください)