Calculator — Simple & Fast

Calculator is a clean, fast scientific calculator that stays out of your way. Type an expression the way you would write it, see the result instantly, and find every past calculation in your history. No account, no internet needed, nothing leaves your phone.

EVERYDAY & SCIENTIFIC
• Add, subtract, multiply, divide, percentages and brackets
• sin, cos, tan with a DEG/RAD switch
• log (base 10), ln, square root, powers and factorial
• Constants π and e
• Long expressions with correct operator precedence, e.g. 2×(3+4)^2
• Backspace to fix a single digit instead of clearing everything

MEMORY & HISTORY
• Memory keys: M+, M−, MR, MC
• Every calculation is saved automatically when you press =
• Delete single entries or clear all history in one tap
• Copy the current result to the clipboard with one tap

HOME-SCREEN WIDGETS & QUICK ACCESS
• Widgets in 3 sizes: last result, result with expression, or a summary with today's count
• Quick Settings tile: open the calculator from your notification shade
• Optional haptic feedback on every key press

LOOK & LANGUAGE
• Themes: light, dark, AMOLED black, system, Material You (Android 12+) and more
• Interface in English, Bahasa Melayu, Bahasa Indonesia and Arabic
• Clear error messages instead of cryptic codes (for example division by zero)

FREE, WITH OPTIONAL PRIMUS PLUS
Every calculator feature is free. The free version shows ads. Primus Plus is an optional subscription (monthly or yearly) that removes ads and unlocks the exclusive colour and picture themes. Cancel any time in Google Play. A one-time 7-day Plus trial is offered on first launch after watching a short rewarded video. If you just want to say thanks, a one-off tip is available in Settings.

PRIVACY
No sign-up and no data collection by the app itself. Calculations and history are stored only on your device. Ads (Google AdMob) follow your consent choice, which you can change in the app at any time.

Calculator is a calculation tool, not professional financial, engineering or academic advice. Please double-check results that matter.

Developed by Primus Creative Hub.

Recent changes:
Stability and performance improvements, bug fixes and a cleaner ad experience.