IPMask vs NetReach

IPMask works out an IPv4 network from an address and a mask: network and broadcast address, first and last host, number of hosts, netmask and wildcard. • Type the address the way you have it: 192.168.1.1, 192.168.1.1/22 or with a dotted mask. • Move the mask slider and watch the 32 bits split into the network part and the host part. • See the address type at a glance: private, public, loopback, link-local, multicast. • Switch to the binary view to see the address, netmask and network bit by bit. • Copy the whole result as text or share it. • On Apple Watch: enter an address with a keypad, turn the Digital Crown to set the prefix and read the result on your wrist. /31 point-to-point links (RFC 3021) and /32 host routes are handled correctly. Made for network engineers, students and anyone who sets up a router at home. The app works offline; it needs a connection only for the small ad banner.

Professional network diagnostics for iPhone and iPad. NetReach gives you the tools to understand exactly what's happening between your device and any server — with millisecond precision. PROBE - HTTP, HTTPS, and TCP probes with full timing breakdown: DNS, Connect, TLS, TTFB, Total - Up to 10 parallel connections per test - Save probe configurations and rerun with one tap TRACE - Hop-by-hop traceroute with ICMP and TCP modes - MTR mode: multi-cycle traceroute with Loss%, Avg, Best, Worst, StDev per hop - Detects ICMP rate-limiting vs real packet loss PING & DNS - ICMP ping with packet loss and jitter stats - Multi-resolver DNS comparison (Cloudflare, Google, Quad9, system) - DNS deep inspection with interception detection TLS INSPECTOR - Full certificate chain: leaf, intermediates, root - Expiry countdown, key algorithm, SHA-256 fingerprint - Tap any certificate for full details. Export as PEM. MONITOR - Network Quality Score (0–100) from real probe data - Wi-Fi ↔ Cellular transitions with SSID, BSSID, IP, GPS - Wi-Fi roaming detection between access points - Push notification delivery latency measurement WI-FI vs CELLULAR - Simultaneous comparison on both network paths - Statistical breakdown: Min, Avg, P90, Max per timing phase BUILT-IN SERVERS - TCP and UDP echo servers for LAN latency testing - HTTP status endpoint with live device metrics EXPORT - CSV export of all probe results and events - Diagnostics ZIP with structured logs - Share from any tab ENTERPRISE - Deploy via MDM (Jamf, Intune, Mosyle, SimpleMDM) - Stream telemetry to Datadog, Splunk, Grafana via OTLP or Splunk HEC - Automated probe suites with SLO monitoring - TLS certificate expiry alerts across your fleet - Privacy controls: exclude GPS, SSID, BSSID per policy - Event-level filtering: choose exactly which telemetry to send PRIVACY - No account required - No tracking, analytics, or ads - Consumer data never leaves the device unless you export it - Enterprise telemetry flows directly to your platform — we never see it Built for network engineers, security teams, IT administrators, and anyone who wants real answers instead of "try restarting your router."