Subnet without binary.

Random subnetting questions. The walkthrough uses the magic-number method, not binary math.

iPhone · iPad · Mac · Free
Download on the App Store

Who made it.

I learned the magic-number method studying for a networking cert. Couldn't find a practice app that drilled it the way the real exam asks, so I built one.

The math runs live. Nothing's pulled from a question bank or generated by an LLM.

It's free.

iPhone, iPad, Mac. Works offline. No accounts, no analytics.

Download on the App Store