Subnet Plus: Subnet Calculator

Ted Trentler · Utilities

4.7 55 ratings Free

Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Aug 26, 2026
New version 2.2 → 2.3

What's new in 2.3: • Path Monitor (Pro) — a live, MTR-style traceroute that keeps probing every hop and shows per-hop packet loss and latency, so you can see exactly where a problem starts • Network Scanner (Pro) — sweep your local network to find active devices, their names, and open ports • Tool Guide — a plain-language guide to every tool, with a field note on each; tap any entry to open that tool • App Language — a new setting keeps SubnetPlus in the language you prefer

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 78% 43
4★ 15% 8
3★ 4% 2
2★ 2% 1
1★ 2% 1

Screenshots

About

Subnet Plus is a fast, beautiful subnet calculator for network engineers, sysadmins, and students — now completely rebuilt for iPhone and iPad. Type any IPv4 or IPv6 address and instantly see the network address, broadcast, usable host range, subnet mask, wildcard mask, prefix length, total and usable hosts, IP class, and address type. A live prefix stepper lets you dial the mask up or down and watch every value update in real time. NETWORK CALCULATIONS • IPv4 and IPv6, auto-detected • Binary view with network/host bits color-coded • Visual address-space map PRO TOOLS • VLSM Designer — carve a network into right-sized subnets and save the plan • CIDR to subnet mask to wildcard converter • Subnet membership — is an address inside a network? • Range to CIDR, and supernet / aggregate • CIDR cheat sheet NETWORK UTILITIES • DNS Lookup — A, AAAA, MX, NS, TXT, CNAME, SOA, SRV, and reverse PTR — using your device's resolver or any IPv4/IPv6 DNS server you add • Ping — round-trip time and packet loss • Traceroute — see the path to any host SAVE & SYNC • Label and save subnets, VLSM plans, and lookups • Everything syncs across your devices with iCloud • Share and export your results Available in 45 languages. Remove ads with a one-time in-app purchase.

What's new · 2.3

What's new in 2.3: • Path Monitor (Pro) — a live, MTR-style traceroute that keeps probing every hop and shows per-hop packet loss and latency, so you can see exactly where a problem starts • Network Scanner (Pro) — sweep your local network to find active devices, their names, and open ports • Tool Guide — a plain-language guide to every tool, with a field note on each; tap any entry to open that tool • App Language — a new setting keeps SubnetPlus in the language you prefer

Details

DeveloperTed Trentler
ReleasedOct 2013
UpdatedJul 2026
Version2.3
Size9.5 MB
RequiresiOS 26.0 or later
Age rating4+
LanguagesArabic, Bengali, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Urdu, Vietnamese
PriceFree
Categories UtilitiesEducation
Bundle IDcom.trentlerconsulting.Subnet--