Live on Google Play
Android · on Google Play
Curlew
The API, HTTP & cURL client that tells you which stage failed. Paste a cURL command, send it, and when it fails, Diagnose runs DNS, TCP and TLS checks against the same host — naming the broken stage with timings and the full certificate chain.
Curlew is free. Curlew Pro is a one-time purchase, never a subscription. No ads, no account, no analytics — requests go only to the endpoints you type.