NetDiag+ puts 25 professional network diagnostic tools in your pocket — built entirely on BSD sockets / Network.framework, no private entitlements. New in v1.4: MTR, Path MTU discovery, TLS Inspector, Encrypted DNS (DoH+DoT), HTTP/3/QUIC, STUN/NAT type, Bonjour browser, IPv6 diagnostics, and Site Reach with SNI-block detection. No tracking, no account, no subscription — one optional IAP removes ads. 12 languages.