数学クイズ なん度?

数学クイズ なん度?

by StudySwitch, Inc.

195 ratings
16 reviews

Archived App (Last seen on 4 Jun 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • July 14, 2012
  • February 6, 2026
数学クイズ なん度? screenshot #1 for iPhone
数学クイズ なん度? screenshot #2 for iPhone
数学クイズ なん度? screenshot #3 for iPhone
数学クイズ なん度? screenshot #4 for iPhone
数学クイズ なん度? screenshot #5 for iPhone
iphone
ipad
🖼️Get Icon
Icons↘︎

About

Challenge yourself with a variety of math quizzes, from basic to difficult. This popular brain training app, featured on TV, helps you calculate angles, areas, and sequences. Perfect for mental exercise and educational fun.

Calculate angles of plane figures
Calculate areas of plane figures
Solve number sequence puzzles
Stage-based difficulty progression
In-app calculation memo feature
Hint system for problem-solving
Share problems with friends
Show original description

What's New in 数学クイズ なん度?

8.21.0

February 6, 2026

たくさんの応援レビューありがとうございます!とても嬉しいです! 今回のアップデートではiOS26に対応しました。合わせて、細かな点を改善しました。 頭の体操にピッタリの数学クイズ・数学パズルがたっぷり340問題。 これからも人気の本アプリ「数学クイズ なん度?」を宜しくお願いします!

More
2

In-App Purchases

$2.99

No Ads

Ads on the screen will be hidden.

User reviews

Love it UNTIL...

So it’s great if you know the answers. Makes you feel really smart.

However, the clues are not helpful. The two I’ve looked at so far have been inaccurate or incomplete. And at some point you should be given the option to see the solution with an explanation. Otherwise it’s simply a way to feed your ego. You won’t really learn anything.
Show more

Great for geometry students!

I

Great for review.

Good subject for reviewing geometry and Trigonometry.

Developer steals your money and won’t respond

BEWARE! The “development” behind this app is practically nonexistent and the people are unethical crooks . The game itself isn’t much. There are three categories: Angles, Areas and Sequences. Every “puzzle” is just a static image of a shape on a grid or a list of numbers and you have to type what you think the angle, area, or next number in the sequence is. This could easily have been a website rather than an app. A very simple website. A mediocre website.
The worst part is that the in-app purchases don’t actually do anything. More on that in a minute.
First you need to know that this app is just an “advertisement delivery system”. Advertising money is this app’s only raison d’être. The ads are everywhere; at the bottom of the page, every time you start the app. If you swipe away from the app or your screen goes off, the entire app restarts itself to give you a new ad. The volume gets turned up, too. You can’t put your device down for a second without another ad popping up (on top of the ever present banner ads). Go back to a previous screen? Ads! It’s the laziest excuse in the name of “education” and “puzzle game” ever thought up just to pump you for ad money. Just slapped the image on there. “Here. Solve this.”
There is an in-app purchase to remove the advertising. $2.99. Pay it and nothing happens. The app remains the same. The ads stay in place. If anything it gets buggier because now certain parts of the app deep in the settings crash when you try to look at your payments or email the developer. Their website is completely in Japanese. I Emailed them anyway. It’s been months and there is still no response.
Show more

Très bonne application pour l’utilisation pédagogique

Bonne application en tant que tel, mais j’aurais aimé pouvoir acheter des avatars comme ceux que l’on voit lorsque le jeu charge. Je trouve qu’il pourrait y avoir plus d’action ou de thématiques. Il pourrait il y avoir des missions ou des quêtes par exemple. Merci de prendre au sérieux mon commentaire et d’essayer d’améliorer votre application dans ce sens
Show more

Developer apps

FAQ

What does this math quiz app do?

This app offers various math quizzes to challenge your brain. It includes sections for calculating the angles of plane figures, determining the areas of plane figures, and solving number sequence puzzles. The app progresses from basic problems to more difficult ones, providing a comprehensive mental workout.

What are the key features of the app?

Key features include the ability to calculate angles and areas of various plane figures, solve number sequence problems, and progress through multiple difficulty stages. Users can also write calculation memos directly on the screen, receive hints for challenging problems, and share problem images with friends via SNS or email.

Is this app free to use?

The app is free to download and use, but it does offer in-app purchases. Specifically, an 'ad removal' purchase is recommended for users aged 12 and under, and for devices used by organizations like schools or cram schools. This suggests the free version may contain advertisements.

What kind of math problems are included?

The app features problems focused on geometry, such as finding the angles and areas of different plane figures. It also includes number sequence puzzles where you need to determine the missing number. The problems are designed to range from basic to advanced difficulty levels.

Who created the math problems in this app?

The math problems were created with the cooperation of university students who are graduates of prestigious high schools like Nada, Koyo, Tsukukoma, and Kaisei. This indicates a high level of academic rigor and accuracy in the problem design.