House of Calculation

1+
Downloads
Content rating
Everyone
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About this app

This app is for learning math and arithmetic calculation problems.

#Five problem categories
[Four Arithmetic Operations] [Fraction] [Linear Equation] [Simultaneous equations] [Factorization]
Within each problem category, there are several types of problems. (For details, see the "List of problems" screen in the app.)
All problems are randomly generated.
There is no limit to the number of times you can solve a problem, so you can solve as many problems as you like.
*There are no explanations provided. Only answers are provided.

#Time Limit Mode
In addition to the normal mode, there is a time-limited mode.
You can test your skills by solving several problems within the time limit.
You can select from three time limits.

Language is available in Japanese and English. Language switching is not supported within the app. The language is switched according to the language setting of the device.
Updated on
Jul 6, 2025

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.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data isn’t encrypted
Data can’t be deleted

What’s new

Now supports Android 15 (API level 35).