Scientific Calculator 991

Your phone is the calculator you already have in your bag — make it work like the one on your desk.

Type the full expression on one line. Watch the result update as you type. No step-by-step entry, no mode switching. The way a textbook writes it is the way you type it.

WHAT IT CALCULATES

1. Trigonometry — sin, cos, tan and their inverses (arcsin, arccos, arctan), degrees and radians
2. Logarithms — natural log (ln) and common log (log₁₀), with eˣ and 10ˣ on the SHIFT layer
3. Powers and roots — x², x³, xʸ, square root, cube root, nth root
4. Parentheses — auto-closes brackets, highlights mismatches before you hit equals
5. Fractions and decimals — enter fractions as expressions, results to 10 significant figures
6. Scientific notation — auto-switches for very large (Avogadro 6.022×10²³) and very small values
7. Constants — π and e built in, no keyboard hunting
8. Memory — MC, MR, M+, M−, plus Ans to chain results
9. History — tap any past calculation to reload and edit it
10. Implicit multiplication — 2π, 3(4+5), 2sin(30) without the × key

FOR STUDENTS AND ENGINEERS

Secondary school, university, engineering, surveying, chemistry, physics lab work. Every function — trig, log, power, root — is one key or one SHIFT away. No switching between basic and scientific mode.

Works on exams, homework, lab reports, site calculations. Opens in under a second. No account. No internet. No data collected.

WHY THIS CALCULATOR

Most calculator apps force you to evaluate step by step, like a 1980s pocket calculator. This one reads the whole expression: type (3.5 × sin(30)) ÷ cos(45) and press equals once. The running preview shows the live answer as you type — you catch bracket errors before committing.

The decimal separator follows your locale: a comma where your school taught you a comma.

OFFLINE, ALWAYS

Every calculation runs on your device. No sign-in, no connection required. Works in a basement lab, on a train, on a plane, in an exam room without wifi.

PRO (OPTIONAL)

The full keypad, trig functions, memory, history and all 30 languages are free. Pro extends history from 20 to 500 entries and removes ads. One purchase, kept forever — no subscription required.


MORE WAYS TO USE IT

• Scientific calculator app with trigonometry, logarithms, and complex expressions — full math keyboard.
• Advanced calculator for students: solve algebra, calculus, and scientific notation in one app.
• Engineering calculator app: sin, cos, tan, log, ln, factorial, exponents — all functions in one view.
• Math calculator for high school and university: compute expressions step by step, track history.
• Scientific notation calculator: convert between standard and scientific notation, solve large equations.