Calcy: All-in-One Calculator

Standard, scientific and programmer calculators in one, plus unit conversion, live currency rates and a date calculator. Clean, fast and ad-free.

Calcy brings together the calculators and everyday tools you actually use, in one clean, fast, ad-free app.

THREE CALCULATORS

• Standard: instant, tap-and-go arithmetic for everyday math.
• Scientific: proper order of operations with trig, powers, roots, logs and factorials.
• Programmer: convert between HEX, DEC, OCT and BIN in real time.

HANDY TOOLS

• Unit Converter: length, weight, temperature, volume, area, speed, data, energy, pressure, angle, time, power, frequency and more.
• Currency Converter: fetches live exchange rates and caches them, so it keeps working offline.
• Date Calculator: find the exact difference between two dates, or add and subtract years, months and days.

THOUGHTFUL DETAILS

• Arbitrary precision for basic arithmetic, so huge numbers stay exact.
• Calculation history and memory always within reach.
• Light and dark appearance; interface follows your system language (English and Chinese).
• Adjustable digit grouping and decimal places.
• Optional haptic feedback and key sounds.

PRIVACY FIRST No accounts, no ads, no tracking. Calcy collects no personal data. Your calculations, history and memory stay on your device. The currency converter only downloads public exchange rates and sends no personal information.

Calcy is designed to be simple, quick and dependable for study, work and daily life.