Radien: Network Toolbox

Is it my Wi-Fi, or is the site down? Where does the connection break? Why does Safari distrust this certificate? Radien answers these questions directly on your iPhone or iPad, in plain language, and it is honest about what a phone can and cannot see. No ads, no trackers, no analytics, no accounts. Nothing you type is sent to a server we operate. Nine tools in one native iOS app: Ping, Multi Ping, Traceroute, DNS Lookup & Reverse DNS, Port Scanner, TLS Inspector, Subnet Calculator, IP Converter and MAC Converter, plus a live Network Details view with your local and public IP, router, DNS servers, Wi-Fi access point vendor and real cellular radio. The honesty is the point. The port scanner says open, closed or filtered, never a fake vulnerability claim. The TLS Inspector reads certificates, protocol versions and cipher support from your device instead of sending the hostname to a grading service. Traceroute never blames middle-hop noise when the destination answers cleanly. Randomized phone MACs are flagged as randomized, not given a fake vendor. And one honest limit: there is no LAN device scanner. Radien diagnoses your connection; it does not enumerate your network. ACCESSIBILITY Every screen is tested by hand with VoiceOver. Result rows read as one sentence, every long-press action is also a rotor action, and the ping chart supports Apple's Audio Graphs, so you can hear your connection as rising and falling tones. Larger Text, Reduce Motion and Voice Control are supported. One honest limit: I have no Braille display, so Braille output is untested. RADIEN PRO Radien is free to use, with a one-time Radien Pro unlock for the power features. Buy once, keep forever. No subscription. Built by an independent developer. Nine languages, iOS 18 or later.