SwiftRPN vs Suma Calc

SwiftRPN is an RPN (Reverse Polish Notation) calculator that aims to be quick to open and easy to use. = RPN Stack Work quickly and efficiently using the RPN Stack by pushing and popping values. The stack will always show what series of inputs led to each output, so you won't lose context during complicated expressions. = Extended Types SwiftRPN can understand scalar types like integers and real numbers, as well as vectors and square matrices of sizes 2, 3, and 4. When operating purely in the scalar integer domain, SwiftRPN can promote up to BigInts to avoid floating point imprecision. = Operators SwiftRPN has 84 built-in operators with included documentation and examples. All the expected operators (basic arithmetic, exponents, logarithms) are present, as are: - Rounding functions (floor/ceil/trunc/round) - Unit conversions - Bitwise operations (and/or/not/xor/shift left/shift right) - Statistics (avg/min/max/sum/std dev/NPV) - Trigonometry (sin/cos/tan + arc/hyperbolic variants) - Vector operations (dot/cross/normalize/length/swizzle) - Matrix operations (identity/inverse/transpose + translation/scale/rotation matrix generators) = Unit Conversions SwiftRPN has 74 built-in units, and can convert between units within families, including: - Angle - Area - Colors (3 and 4 components) - Coordinate systems (2D and 3D) - Length - Mass - Storage (Base 10 [SI, 1000 bytes in a kb] and Base 2 [1024 bytes in a kb]) - Temperature - Time - Volume = Value Representation SwiftRPN recognizes values represented in binary, octal, decimal, and hexidecimal. You can: - Enter values in one representation, and convert them to another - See the result of bitwise operations in binary automatically - View vec3 and vec4 components (truncated) in hexidecimal when working with colors.

Suma is a natural language calculator. Just type what you're thinking and get instant results. MATH & VARIABLES Type expressions naturally: (100 + 50) / 3, 2k * 12, 20% of 150. Create variables like price = 100 and reuse them on the next line. FUNCTIONS sqrt, abs, round, floor, ceil, min, max — plus constants like pi and e. UNIT CONVERSIONS Convert between 8 categories: length, weight, temperature, volume, area, speed, time, and data. Just type "100 km to miles" or "72 kg to lbs". DATE CALCULATIONS "today + 2 weeks", "days until Jan 1", or chain operations like "tomorrow + 3 months + 1 year". CURRENCY EXCHANGE 161 currencies with daily updated rates. Type "100 usd to eur" or use symbols like "$50 to gbp". Add math to conversions: "100 usd to eur + 10%". AGGREGATES Use "sum" or "avg" to total all your previous results. DESIGNED TO BE SIMPLE No buttons. No modes. No menus. Just a clean notepad where every line is calculated instantly. Tap any result to copy. Swipe to delete. Your work saves automatically. Beautiful light and dark themes. Works great on iPhone and iPad. Completely free. No ads. No subscriptions.