WhyFi

WhyFi runs in the macOS menu bar and continuously monitors the Wi‑Fi connection, reporting signal strength, noise floor, SNR, transmit rate, router ping, internet ping, jitter and DNS lookup time. Each metric is color‑coded (green, orange, red) and the icon’s face reflects the overall health, giving users an at‑a‑glance status without leaving the menu bar.

The app includes a real‑time “Radar” that updates four times per second, allowing users to walk around with their laptop and locate the spot with the strongest signal, while also displaying nearby networks and their strengths. A built‑in speed test, powered by Cloudflare, measures download and upload throughput and detects bufferbloat, indicating whether the connection can sustain latency‑sensitive tasks such as video calls.

WhyFi separates diagnostics into three layers—Wi‑Fi signal, router LAN latency, and WAN internet latency—so users can pinpoint whether slow performance stems from distance to the router, router congestion, or the ISP. The tool is available for macOS 13+ on both Apple Silicon and Intel, and all proceeds support a Bali animal‑care charity.