Subnetic

Fast offline subnet calculator

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

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

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The developer, 永 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    • 永 张
    Size
    • 571.4 KB
    Category
    • Utilities
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • Copyright © 2026 Peter Zhang. All rights reserved.
  • Developer Website
  • Privacy Policy

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