Net Trouble Checker

Use symptom-based diagnostics and focused tools to check internet access, DNS, response times, and LAN devices, then see what to try next.

Slow internet, lag or dropouts, a website that will not open, or a missing printer: choose the closest symptom and Net Trouble Checker checks the relevant network areas, then summarizes likely causes and what to try next.

Key features:

• Simple symptom-based diagnosis
• Download speed (up to about 8 MB or five seconds), internet access, DNS, response time, loss, and jitter checks
• Estimated-router and LAN-device checks while connected to Wi-Fi
• Focused tools for speed, DNS, LAN devices, Ping, and internet access
• Clear results with likely causes and what to try next
• On-device history and text sharing that redacts IP addresses and other network identifiers
• A shared report and copied support information include the app version at report creation

Privacy and storage:

• No account required
• History saving is optional; turning it off does not automatically delete existing records
• Shared reports redact IP addresses, MAC addresses, the estimated router, hostnames/DNS names, and LAN device names
• Diagnosis results and history are not sent to the developer's server
• Diagnosis results and history are not included in ad requests

Limitations:

Because of iOS restrictions, LAN-device discovery may be incomplete. The Slow Internet diagnosis and Speed tool download up to about 8 MB or for up to five seconds from nwchk.elevenback.co.jp, ElevenBack's speed-test server, and calculate download Mbps on device. The speed needed depends on the activity, and results vary by time of day and network conditions.