Apps by Kojiro Fujisaka
IPv4 CIDR Calc app icon

Utilities

IPv4 CIDR Calc

Kojiro Fujisaka

Free download In-app purchases
Open on Apple

About this app

IPv4 CIDR Calc is a focused IPv4 subnet calculator for iPhone and iPad. Enter an IPv4 address with a CIDR prefix, subnet mask, or full CIDR notation, and instantly see the network details you need. The app calculates network address, broadcast address, usable host range, total addresses, usable hosts, subnet mask, wildcard mask, host bits, and network bits. Key features: - IPv4 address + CIDR calculation - IPv4 address + subnet mask calculation - Full CIDR input such as 192.168.1.10/24 - Decimal, binary, and hexadecimal views - Network and broadcast addresses - First and last usable host - Total addresses and usable host count - IPv4 class A/B/C/D/E - Private, loopback, link-local, multicast, reserved, broadcast, and documentation address detection - Handles special prefixes such as /0, /31, and /32 IPv4 CIDR Calc is useful for network engineers, system administrators, students, certification study, lab work, firewall rules, router settings, and quick subnet checks. This app is IPv4 only. IPv6 calculation is not included.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Sep 3, 2026 · 0 ratings Sep 3, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free 0×
Price history
Current Free
Free Sep 3, 2026 · Free Sep 3, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Sep 3, 2026 · 2:16 AM Free

Screenshots

IPv4 CIDR Calc iPhone screenshotIPv4 CIDR Calc iPhone screenshot IPv4 CIDR Calc iPad screenshotIPv4 CIDR Calc iPad screenshot