A daily mental math game

Two minutes of mental math. Every day.

Answer as many questions as possible in 120 seconds. Come back tomorrow. Beat your score.

Sprint now Install free

2 minutes
1 daily score
Free
Works offline

nocalcu showing a 120-second daily sprint and a best score of 42

Why play?

Keep your mental math sharp.

Phones do the math. nocalcu gives the brain a two-minute daily workout.

Focus

Two minutes of arithmetic. No distractions.

Progress

Your score stays saved. Tomorrow starts with a number to beat.

Learn

Skip a hard question. nocalcu shows the answer and the method.

Five-question demo

Answer five questions.

Type an answer. The next question appears as soon as it is correct.

↳ No account. No setup.

1 of 5 0.0s

MENTAL MATH

18 + 46

How it works

One daily sprint.
Practice any time.

Daily sprint

The same test every day.

The sprint lasts 120 seconds and always uses the same mix of addition, subtraction, multiplication and division. The score is the number of correct answers.

120 seconds
Same math mix
Saved best score

Practice

Choose what to practice.

Pick one of five difficulty levels. Choose addition, subtraction, multiplication or division. nocalcu saves a best score for every setup.

nocalcu practice screen with difficulty levels and math operations

Start now

Two minutes. One score.

Play today’s mental math sprint in the browser, or install nocalcu on Android.