Dad's Calculator vs LumiCalc

Dad's Calculator is for the moment you reach for a calculator in your everyday life: the checkout line, the measuring tape, the stove. It keeps a notebook of everything you work out, adds up the lines you pick, and remembers them for next time. Right next to it: a unit converter, a recipe scaler and size charts. THE CALCULATOR • Every calculation stays in a notebook-style history. Your math, with receipts • Percent works the way you say it: 80 - 25% = 60 • Pick the lines you care about and get their sum, average, largest and smallest • Copy the result, or drop the sum straight into your next calculation • Name a set of lines (groceries, measurements, quotes) and save it for when your memory lets you down • Swipe a line away, or wipe the whole slate WITHIN ARM'S REACH • Converter: type one number, see every unit at once. Star the ones you use • Cooking: recipe for 4, dinner for 6? Change the servings, or match one ingredient, and the rest follows • Sizes: shoes and clothes in US / UK / EU / cm, because sizes never agree • Notebook by day, chalkboard by night. Switch anytime in Settings SECRET DIARY • Log measurements for each body part and your weight, in cm / inches and kg / lb • Compare with 1, 3 or 6 months ago, in a graph or a table

LumiCalc combines a calculator with your keyboard: bring it up in any app to calculate, convert units, and type—with themes and colors you choose. Look good, work well Preset themes (Caramel Dune, Aurora Night, Violet Night, and more)—switch in one tap Custom keycap colors and backlight, including mosaic-style gradients Adjustable keycap and highlight corners for your own style Calculate & convert Basic math: addition, subtraction, multiplication, division—free to use Scientific (SCI): trig, log, square root, and more—requires subscription after trial Unit conversion (UNIT): length, weight, temperature, area, and more—requires subscription after trial English and Chinese UI and unit labels supported Subscription 3-day free trial. During the trial you can use scientific and unit conversion; after the trial, SCI and UNIT require a subscription. Themes, custom colors, saving designs, and other premium features also require a subscription. Built for anyone who wants a keyboard that’s both useful and looks the way you like. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/