NHCheck Lite

Five checks, one page, about 30 seconds: Wi-Fi, router, ISP, DNS and speed — with a clear verdict on where the problem is and what to fix. No account, no ads.

Your internet is slow. But why?

Is the problem your Wi-Fi, router, ISP, DNS, or internet speed?

NHCheck Lite finds the problem in about 30 seconds.

FIVE SIMPLE CHECKS

1. Link

Shows how this iPhone is connected: the network's name, its signal, the security in use, and your addresses.

1. Router

Tests the connection to your router for:

• Latency • Packet loss • Jitter

It also finds devices on your local network, and names the ones that say who they are.

1. ISP

Checks the first public router beyond your home router.

This helps tell whether the problem is inside your home or with your internet provider.

Tap the ISP result to trace the route to Cloudflare, Google, Quad9 or OpenDNS and measure every hop along it, so you can see where the delay is added.

1. DNS

Tests how quickly your network can find website addresses.

DNS can be slow even when your internet connection looks fine.

Tap the DNS result to compare your resolver against Cloudflare, Google, Quad9 and OpenDNS.

Each one is timed the same way, so you can see whether a faster resolver is available — and switch if it is.

1. Speed

Measures real download and upload speed using real network traffic.

Tap the Speed result to compare real downloads from Cloudflare, Google, Fastly, Akamai and Amazon — one connection, then four at once — so a line that is slow to one network can be told from one that is slow everywhere, and see which of them serves each part of X, TikTok, Snapchat or YouTube.

No estimates. No simulated results.

LINE TESTS AND TWO-PHONE SPEED

On the ISP page, one tap runs a minute of pings that tells Wi-Fi drops from line drops, and finds the largest packet your connection carries. A chip beside the language switch measures Wi-Fi speed between two phones with no internet in it.

The speed test also shows how much latency rises when the line is busy, and measures the result against the plan you pay for.

KNOW WHAT TO FIX

NHCheck Lite uses the test results to give you a clear recommendation.

For example:

• High router latency → check your local network • Packet loss past your router → contact your provider • Slow DNS → switch to a faster resolver

If everything looks good:

Nothing to fix.

SEE THE PROBLEM

NHCheck shows your connection as a simple path:

Device → Router → ISP → Internet

This makes it easy to see where the problem starts.

SEE YOUR NETWORK

Scan your local network to see which devices respond, and what each one calls itself.

SHARE YOUR RESULTS

Share the complete test result as an image with your ISP, technician, or anyone helping you.

SIX LANGUAGES, DARK OR LIGHT

English, Arabic, Spanish, Urdu, Portuguese and French, switched from the top bar.

Arabic and Urdu are fully displayed right-to-left, including the connection diagram.

Dark, light, or whatever your iPhone is set to.

PRIVATE BY DESIGN

No account. No tracking. No ads. No third-party SDKs.

There is no backend server, and your app activity is not sent anywhere.

The only network traffic is the traffic needed to perform the tests.

LOCATION PERMISSION

iOS requires location permission before any app can read the name of the Wi-Fi network you are on.

NHCheck uses this permission only for that.

NHCheck does not use GPS or track your location.

You can still run every test without location permission.

DATA USAGE

The speed test uses real data.

If you are on a metered or mobile connection, keep this in mind before running the speed test.

Find the problem. Fix the right thing.