This tool calculates IPv4 and IPv6 subnets, providing detailed information such as the number of hosts, subnet size, class, and network addresses. Use the interactive CIDR slider to dynamically adjust subnet properties.




247+ iOS apps curated and reviewed
The best subnet calc apps on iPhone average 4.0★ across 247+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 4.9★ (220) | No | No | Oct 2026 | ||
| 2 | Free | 5.0★ (2) | No | Yes | May 2026 | ||
| 3 | Free | 3.6★ (8) | No | No | Aug 2026 | ||
| 4 | Free | 4.0★ (7) | No | Yes | May 2026 | ||
| 5 | Free | 3.8★ (4) | No | No | May 2026 | ||
| 6 | Free | 2.3★ (22) | Yes | No | May 2026 | ||
| 7 | $3.99 | 3.3★ (3) | No | No | Aug 2026 | ||
| 8 | $1.99 | 5.0★ (34) | No | No | Oct 2026 |




This tool calculates IPv4 and IPv6 subnets, providing detailed information such as the number of hosts, subnet size, class, and network addresses. Use the interactive CIDR slider to dynamically adjust subnet properties.




Calculate detailed subnet and IP information. This tool helps network administrators quickly understand subnet details, including class and IP range classification. An advanced version offers additional features for managing network configurations.





This app assists networking professionals and students with IP address calculations. It offers tools for CIDR and VLSM subnetting, including practice modules and tutorials with practical examples.