PCalc vs EasyWeekNumber

PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations. Includes an Apple Watch app, so you can calculate on your wrist!

EasyWeekNumber is the simple, fast way to learn everything about a date. Pick a date, choose a calendar, and instantly get: • the week number (ISO); • the day of the year (days elapsed since January 1st); • the date converted into the calendar of your choice. 14 supported calendars: Gregorian, Buddhist, Chinese, Coptic, Ethiopic (Amete Alem and Amete Mihret), Indian, Islamic, Islamic tabular, Islamic Umm al-Qura, ISO 8601, Japanese, Persian, and Republic of China. FEATURES • Week number and day of the year at a glance • Instant conversion between the Gregorian calendar and 13 other calendars • Optional time display • Your preferences (calendar and time display) are remembered between launches • Clean, fast, ad-free interface • Available in English, French, and German Perfect for work, planning, studies, or curiosity, EasyWeekNumber answers "what week is it?" in a second.