LanLink vs Radien

LanLink 让手机成为局域网内的文件共享中心。在同一 WiFi 或手机热点下，电脑、平板等设备通过浏览器即可访问手机中的文件与相册，无需数据线、无需上传到云端。 【主要功能】 • 一键启动：在 App 内启动服务后，其他设备扫码或输入地址即可用浏览器访问 • 文件浏览与下载：浏览共享目录、相册与文档，支持列表/网格视图，图片可预览与下载原图（含扩展名正确保存） • 大文件上传：支持大文件分块上传与断点续传，多文件可同时上传，进度条显示传输速度 • 文件管理：在主程序的文件浏览中可对文件进行查看（系统默认应用打开）、复制、删除、移动 • 可选密码保护：可为访问设置用户名与密码，适合在共享网络下使用 • 多语言：支持简体中文、繁体中文、英语、日语、韩语，与系统/应用内设置一致 【适用场景】 • 临时把手机里的照片、文档传给电脑，无需微信/邮件 • 会议、出差时用手机热点快速共享文件给同事 • 在家庭或办公室局域网内多设备互传文件 【隐私与安全】 • 数据仅在本地与局域网内传输，不经过第三方服务器 • 建议仅在可信网络（如家庭 WiFi、手机热点）下使用，避免在公共 WiFi 开启服务 • 可随时在 App 内停止服务并查看连接记录

Is it my Wi-Fi, or is the site down? Where does the connection break? Why does Safari distrust this certificate? Is my public IP really mine, or am I behind my carrier's NAT? Radien answers these questions on your iPhone or iPad - directly on the device, and honest about what it can and can't see. No ads, no trackers, no analytics, no accounts. Nothing you type is sent to a server we operate. WHAT'S INSIDE • Ping - latency, jitter and packet loss to any host, with a live chart and a plain-language verdict. Your router is one tap away. • Multi Ping - compare up to four hosts side by side, at once. Saved groups load a whole comparison in one tap. • Traceroute - every hop between you and a destination, with reverse-DNS names and a read of where delay or loss truly begins. Middle-hop noise is never blamed when the destination answers cleanly. • DNS Lookup & Reverse DNS - query A, AAAA, MX, TXT, NS and more against the system resolver or Google, Cloudflare and Quad9. Enter an IP for a reverse PTR lookup. • Port Scanner - which TCP ports are open, closed or filtered (usually a firewall) - never a fake vulnerability claim. • TLS Inspector - read a site's TLS/SSL certificate chain, protocol versions and cipher support, straight from your device. No third-party grading service, no invented grades. • Subnet Calculator - IPv4 and IPv6 math: CIDR, network, broadcast, host ranges and equal splits, with a live bit view and RFC-correct /31 and /32. • IP Converter - turn any IP notation into every other form, and see how an IPv4 address rides inside IPv6. • MAC Converter - every MAC address notation, EUI-64, link-local, and a fully offline vendor lookup. Randomized phone MACs are flagged as randomized, never given a fake vendor. • Network Details - your Wi-Fi name and access point vendor, local and public IP address, router address, DNS servers, your real cellular radio (5G, or 5G riding a 4G core) and NAT64 detection - one tap from the always-on status header. 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. PRIVATE BY DESIGN Radien uses Apple frameworks only - no third-party SDKs, no analytics, no data collection. The MAC vendor database is bundled on the device, and certificates are read locally, never sent to a checking service. Your network is your business. RADIEN PRO Radien is free to use, with a one-time Radien Pro unlock for the power features: Multi Ping, custom DNS resolvers and extra record types, advanced port presets, full TLS depth, MAC vendor lookup, the app-icon picker, tuning options and sharing. Buy once, keep forever - no subscription. Built by an independent developer. Feedback is welcome and read personally.