RPN vs Calculator Ultra

Simple reverse polish notation calculator. To make an operation you tap the number using the digit buttons. When you want to insert the number into the stack you press the orange button "Enter". When you're done inserting the numbers just tap the operation to do it. The result will be displayed but not put again into stack. Example: 6+7 is 6 enter, 7 enter +

Calculator Ultra is a fast, accessible calculator designed for everyday use. CALCULATE WITH CONFIDENCE • Large, easy-to-tap keys • Live expression and result display • Memory functions, percentages, sign changes, and scientific tools • Calculation history with notes MORE THAN A CALCULATOR • Convert units and currencies • Calculate durations and date differences • Use the interactive Home Screen widget • Work in portrait or a dedicated landscape layout • Everyday calculations work offline; currency rates refresh online when available MAKE IT YOURS • Four polished themes stored on your device • Midnight, Graphite, Porcelain, and Forest styles • Consistent colors throughout the interface BUILT FOR EVERYONE • English is the default language • Supports Thai, Spanish, French, German, Japanese, Korean, Simplified Chinese, and Arabic • VoiceOver-friendly labels and right-to-left layout support No account or sign-in is required.