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By Tamai Umehara

This app is only available on the App Store for iOS devices.


"Drill-san" is a simple calculator application from children to adults can enjoy.

Choose from one of arithmetic to strengthen the brain!

• Addition
• Subtraction
• Multiplication
• Division

• Beginner
• Intermediate
• Advanced

Number of questions
• 10, 20, 50, 100 can be selected.

Test Results
• You can list the test results.
• You can view detailed information about test results.
• You can delete all at once the test results.

• You can send your test results by email.

iPad Support
• Supports both horizontal and vertical.

• You can turn on/off sounds.

Simple Calc
• You can use Simple Calculator.
• You can send your calc results by email.

What's New in Version 1.6

Support iOS11


iPhone Screenshot 1
iPad Screenshot 1
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Education
  • Updated:
  • Version: 1.6
  • Size: 5.0 MB
  • Languages: English, Japanese, Simplified Chinese, Traditional Chinese
  • Developer:

Compatibility: Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.

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