LumiCalc vs NibbleCalc

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/

NibbleCalc is the all-in-one calculator for developers, designers, and power users — a clean, fast calculator plus a full toolbox, all offline. FOUR-FUNCTION & SCIENTIFIC • Beautiful standard calculator with calculation history • Full scientific panel in landscape (trig, logs, powers, roots, factorial) PROGRAMMER • HEX / DEC / OCT / BIN, live side by side • Bit widths from 8-bit up to 127-bit • Flip individual bits in an interactive bit grid • AND, OR, XOR, NOT and shifts COLOR TOOLS • Convert HEX, RGB, HSV, HSL and CMYK • Copy ready-to-use CSS, SwiftUI and UIKit code • Color Scan: pick real-world colors with your camera • WCAG contrast-ratio checker DEVELOPER TOOLS • JWT decoder — header, payload and claims, fully offline • MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes • UUID v4 generator • Base64 encode / decode (URL-safe too) DATE & TIME • Date calculator — add, subtract, days between • Unix timestamp converter — ISO 8601, RFC 2822, UTC and local MADE TO ENJOY • Three themes: Dark, Vibrant, Minimal • iPhone & iPad, portrait and landscape • 17 languages • Works entirely offline — your data never leaves your device NibbleCalc Pro (one-time purchase) • Remove ads • Unlock Dev Tools, Color Scan, 127-bit width and premium themes Download NibbleCalc and carry a whole developer toolbox in one calculator.