MENTAL MATH, GAMIFIED

Do the math.
In your head.

Calcula turns quick calculation into a daily game. Four modes, four difficulty levels, instant feedback. Train a few minutes a day and watch your speed climb.

Try a problem → Download on theApp Store
Calcula
MENTAL MATH
24 / 30 today
🔥 12 day streak
Level 7480/500
GAME MODES
+Standard
%Percent
x²Squared
→Sequence
Practice
Progress
Awards
Learn
FOUR WAYS TO PLAY

A mode for every kind of brain

Each mode trains a different mental muscle. Switch any time — your streak carries across all of them.

+
+

Standard

Addition, subtraction, multiplication and division. The classic four-operation drill.

14 + 28 = ?
%
%

Percent

Find the percentage fast. Tips, discounts and stats become second nature.

25% of 80 = ?
x²
x²

Squared

Squares and square roots. Build the number sense that makes estimates effortless.

12² = ?
→
→

Sequence

Spot the pattern and predict what comes next. A workout for working memory.

2, 4, 8, 16, ?
LEARN

The tricks behind the speed

Twelve short lessons, each mapped to a game mode. Learn the trick once, then drill it until it's automatic.

+

Fast Addition

Add left to right, in chunks — no carrying required.

−

Fast Subtraction

Count up, don't borrow. Fewer moving parts, fewer mistakes.

×

Multiplication Shortcuts

×5, ×9, ×11 and friends — patterns that skip the times tables.

ab

Two-Digit Multiplication

Vertically and crosswise — three products, no long multiplication.

÷

Division & Divisibility

Know if it divides before you divide — rules that compose.

%

Percent Fluency

Tips, discounts, and the flip trick — three moves cover most of it.

Explore all 12 lessons →
TRY IT RIGHT HERE

No download needed. Take the warm-up.

Five quick Standard problems, multiple choice. Same feel as the app. Ready?

HOW IT WORKS

Three taps to sharper math

1

Pick a mode & level

Choose Standard, Percent, Squared or Sequence — then dial difficulty from Easy to Insane.

2

Solve against the clock

Answer as many as you can. Instant green-or-red feedback keeps you moving, never stuck.

3

Build the streak

Earn XP, level up, and keep your daily streak alive. Awards unlock as you improve.

🔥
12
Day streak, and counting
✓
95%
Lifetime accuracy tracked for you
🎯
2,847
Problems solved and climbing
🏆
127
Best run, one session

Your numbers never leave your phone

No accounts, no ads, no tracking, no third-party services. Every score, streak, and setting lives on your device — and nowhere else. That's a promise, not a setting you have to find.

Read our privacy policy →

That was just the warm-up.

The full game has every mode, four difficulty levels, daily streaks, XP, and a wall of awards to chase. Continue on the app.

Download on theApp Store