Numi App - Numi is a beautiful text calculator for Mac.
RealCalc Scientific Calculator - RealCalc Scientific Calculator
Calcbot for Apple Watch - Calculate, convert, and split tips from your wrist
makina - The only gesture-based calculator on the Play Store. makina |m??ki?n??| Noun
CALCU - CALCU is a simple, yet beautiful and powerful calculator.
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.