# Subnetic — Fast offline subnet calculator

> Fast offline subnet calculator (iPhone/iPad app by 永 张.)

- Source: https://appshunter.io/ios/app/subnetic/id6782267852 (this page in markdown: same URL + `.md`)
- Developer: [永 张](https://appshunter.io/developer/1806535769)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 1 MB
- Languages: American English
- Released: 2026-07-17
- Data updated: 2026-08-21
- User reviews in markdown: https://appshunter.io/ios/app/subnetic/id6782267852/reviews.md

## What is Subnetic?

Subnetic is the fast, private subnet calculator for network engineers, admins, and students.

Type any IPv4 address or CIDR and instantly get the network, broadcast, subnet mask, wildcard, usable host range, host counts, address class and scope — plus a live binary breakdown that highlights the network and host bits. It updates as you type, and a prefix slider lets you sweep /0 to /32 in a tap.

Everything runs 100% on-device. No accounts, no network calls, no tracking — your addressing stays yours.

INCLUDED
• IPv4 / CIDR calculator with full results
• Live binary breakdown (network vs host bits)
• Dotted-mask and prefix input, RFC 3021 (/31) and /32 aware
• Tap any value to copy

SUBNETIC PRO (one-time purchase)
• Subnet Splitter — divide a block into equal subnets, or pack it by host requirement with VLSM
• IPv6 calculator — prefix, range, expand/compress, address counts
• Export & Copy All — copy every field at once or share results as text

Built with native Apple frameworks and a calm, modern design. No subscriptions — Pro is a single purchase, yours forever.

Terms of Use (EULA): https://obelisk.club/subnetcalculator/terms

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Subnetic Pro | $4.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-17

No release notes.

## More apps by 永 张

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- [NearBeam: Local File Transfer](https://appshunter.io/ios/app/nearbeam-local-file-transfer/id6777431459)

All apps by 永 张: https://appshunter.io/developer/1806535769

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*