LumiCalc vs Calcula Keyboard

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/

Calcula is a lightweight scientific math keyboard for iPhone. After you add the keyboard, you can type expressions in chats, notes, browser search bars, or any system text field, and insert the result at the current cursor position. Version 1.0 focuses on the core workflow: a basic keyboard, an f(x) scientific panel, DEG / RAD trigonometric input, in-keyboard history, and a companion app for setup guidance, basic settings, and About. It does not include accounts, cloud sync, or online computation. Settings stay on the device.