Calculation Training

Calculation Power Training is a brain-training app designed for everyone—from elementary school children to seniors. With simple, game-like controls and a variety of math problems to choose from, you can sharpen your mental math skills anytime.

The app eliminates unnecessary features so you can fully focus on mental calculation practice. It’s perfect for elementary math practice, a quick brain warm-up before studying, or mental exercise to help maintain cognitive health as you age.

- Choose Your Calculation Training
Practice the four basic arithmetic operations that form the foundation of math. You can focus on a single type of calculation or challenge yourself with a mixed set covering all types.

+ Addition
+ Subtraction
+ Division
+ Multiplication
+ Mixed Arithmetic (All Operations)
+ Expressions with Two Operators

- Selectable Difficulty Levels
Choose from five difficulty levels, ranging from Easy to Very Hard.
By selecting a level that matches your ability, you can train efficiently and progressively improve.

As you continue solving problems, your skill level will naturally increase—leading to faster calculation speed and improved mental math performance.

- Multiple Training Modes
The app features three calculation training modes.
Your personal best score is recorded in every mode, allowing you to track your improvement over time.

◆ Time Limit Mode
Solve as many problems as possible within a set time limit.
The time limit can be adjusted from 20 to 300 seconds in 10-second increments.
Perfect for quick practice sessions or longer, focused training—customize it to suit your needs.

◆ Question Limit Mode
Challenge yourself to solve a fixed number of problems as quickly as possible.
The number of questions can be set from 10 to 300 in increments of 10.

◆ Endless Mode
Each correct answer extends the remaining time.
Keep answering quickly and accurately to solve more problems and achieve a higher score.

◆ Column Method Mode
Practice vertical calculations (column method).
Train your speed in solving multi-digit addition and subtraction problems, up to three rows.

- Flexible Input Options
For multi-digit answers, you can choose whether to enter numbers starting from the highest or lowest place value.
Two different keypad layouts are available, allowing you to select the one that feels most comfortable.

- Online Rankings
Supports score rankings through Google Play Games.
Compete with players around the world and test your calculation skills globally.

In Time Limit Mode, longer time settings yield higher scores.
In Question Limit Mode, selecting more questions results in higher scores.

Recent changes:
Fixed an issue where the restore purchases option was not displayed on some devices.