Accessibility

Subnet Plus · Last updated June 28, 2026

In short: Subnet Plus is built entirely with Apple’s native iOS frameworks, so it inherits the system accessibility features you already rely on — VoiceOver, Dynamic Type, Bold Text, Reduce Motion, Increase Contrast, and more. We also add hand-written VoiceOver labels to the parts of the app where the numbers matter most, like the prefix stepper and the binary address breakdown. Accessibility is something we keep improving, so if anything gets in your way, we want to hear about it.

We believe a networking tool should work for every engineer, student, and hobbyist — including those who use assistive technology. Because Subnet Plus is written natively for iOS and iPadOS, every standard accessibility setting you turn on in Settings › Accessibility carries straight through to the app. Here’s what that means in practice.

VoiceOver Every control is reachable and labeled, with custom labels on calculators and results.
Dynamic Type Text scales with your preferred reading size, including the larger Accessibility sizes.
Reduce Motion Animations are turned off automatically when you ask iOS to reduce motion.
Contrast & color System colors adapt to Dark Mode, Increase Contrast, and Smart Invert.

VoiceOver

Subnet Plus is fully navigable with VoiceOver. Because it uses standard iOS controls, every button, field, toggle, and list row is automatically focusable and announced. On top of that, we write custom VoiceOver labels, values, and hints for the places where a raw on-screen glyph wouldn’t read well, including:

The prefix-length stepper on the calculator announces “Decrease prefix length,” “Prefix length 24,” and “Increase prefix length” so you always know the current value.
The address-space bar reads as a single element — for example, “Address space split, Network slash-24, host 8 bits” — instead of a row of unlabeled segments.
The binary breakdown groups each octet into one spoken element so the bits are announced in context rather than one digit at a time.
Result rows, the “Clear input” button, copy buttons, and Pro feature rows all carry descriptive labels.

Dynamic Type & Bold Text

All text in Subnet Plus uses the system text styles, so it follows the text size you set in Settings › Display & Brightness › Text Size or Settings › Accessibility › Display & Text Size — up to and including the larger Accessibility text sizes. Turning on Bold Text works too. Layouts reflow to keep results readable rather than truncating them.

Reduce Motion

If you enable Settings › Accessibility › Motion › Reduce Motion, Subnet Plus detects it and disables non-essential animations — including the calculator’s transitions and the “Copied” confirmation — so the interface changes instantly instead of sliding or fading.

Contrast, color & Dark Mode

The app uses Apple’s adaptive system colors, so it responds to Dark Mode, Increase Contrast, and Smart Invert automatically. We don’t rely on color alone to convey information — values are always backed by text and labels, so the app remains usable with color filters or for color-vision differences.

Switch Control, Voice Control & keyboards

Standard iOS controls mean Subnet Plus also works with Switch Control and Voice Control, and with hardware keyboards on iPad. Text fields use the right keyboard type (numeric pads for addresses and prefixes) and proper return-key actions to keep input quick and predictable.

The website

This website (subnetplus.com) and its free subnet and IPv6 calculators aim for the same standard: semantic HTML, labeled form fields, keyboard-operable controls, visible focus, and text that scales when you zoom. We test against the WCAG guidelines and treat any barrier as a bug.

Found a barrier? Tell us. Accessibility work is never finished. If something in the app or on this site is hard to use with assistive technology, please send us a message — it goes straight to the developer. Describe what you were trying to do, which assistive technology you were using, and the device and iOS version if you know them, and we’ll work to fix it.