NetCheckPro.online: Is your internet good enough for calls? Plain-English answer

Hi, I'm Hgguft, the solo maker. Speed tests answer "how fast?" but the complaint I keep hearing is "my calls are choppy and my speed test is fine". NetCheckPro measures latency, jitter and bufferbloat (lag when your connection is busy) from your browser, using Cloudflare's open-source test engine, and tells you in plain English whether the connection suits Teams, Zoom, gaming, streaming or VPN. It is free, needs no signup and takes under a minute. Honest limits: it does not measure packet loss (browsers cannot), it tests your path to Cloudflare, and a run can use up to about 190 MB. There are also guides on what a good jitter figure is and how to fix high jitter. Which check should come next?