0xCalc vs Subnet

A no-fuss, intuitive calculator tailored for programmers and engineers. * There are no ads and no in-app purchases in this app. Your purchase gets you all features, forever. * This calculator works just like a normal calculator, plus: - When entering a calculation, the last number and operator entered are displayed. - When hitting '=', the full calculation, as well as the result, are displayed. Features - Switch between Binary, Octal, Decimal, and Hexadecimal - A full 64-bit binary representation is visible at all times. - Basic Operations: add, subtract, multiply, divide - Bitwise Operations: AND, OR, XOR, NOR - Shift Operations - Rotate Operations - 1's and 2's Compliment - Hide the second through fourth row of operators when not needed.

Subnet Calculator is a clean, professional networking tool for network engineers, sysadmins, CCNA/CCNP students and developers. Enter an IP address and a prefix (or CIDR) and instantly get every subnet detail you need. IPv4 CALCULATIONS • Network and broadcast addresses • Usable host range and host count • Subnet mask, wildcard (inverse) mask, hex mask • Address class (A/B/C/D/E) and category (private / public / loopback / link-local / multicast …) • Binary view with the network and host portions colour-coded • Convert freely between mask and CIDR prefix • Correct handling of /31 (point-to-point) and /32 (single host) IPv6 CALCULATIONS • Address compression (::) and full expansion • Address type detection (global unicast / link-local / unique local / multicast …) • Network prefix, first and last address • Total address count (shown as a power of two and exact value), number of /64 subnets SUBNETTING • Equal split: divide a network by a new prefix and list every subnet • VLSM: allocate the right-sized subnet for each host requirement automatically WHY YOU'LL LIKE IT • 100% offline — no network access, no data collected, full privacy • Tap any result to copy it • Dark mode, universal for iPhone and iPad • English & Chinese, follows your system language • Clean interface, no ads Whether you're planning a network, studying for a certification, or troubleshooting on the job, this tool gets your subnet math done fast and accurately.