NetDiag+
NetDiag+ and Fing: which one do you need?
Fing and NetDiag+ are both network apps for your phone, and they share a few basic tools, but they answer different questions. Fing is built around showing who and what is on your network. NetDiag+ is built to show where a slow or laggy connection breaks down: on your Wi-Fi, at the router or further out, at your provider. Plenty of people will want both.
Side by side
| What you want to do | Fing | NetDiag+ |
|---|---|---|
| See every device on your network and what it is | Yes: name, model and vendor | LAN scan lists devices, without a device-recognition database |
| Network security and device alerts | Yes, to your phone and email | No |
| Check a rental for hidden cameras | Yes | No |
| Internet outages in your area, ISP ratings and reviews | Yes | No |
| Parental controls, blocking intruders, bandwidth per device | With Fingbox | No; NetDiag+ runs tests when you start them |
| Speed test | Yes, Wi-Fi and cellular, with latency | Yes |
| Ping, traceroute, DNS lookup, port scan | Yes | Yes |
| Find where the problem shows up: Wi-Fi, router or provider | Not described in its listing | Health Score: about 40 seconds, router and internet pinged together under load |
| Latency under load (bufferbloat), graded A+ to F | Not described in its listing | Yes, download and upload graded separately |
| Packet loss at each hop (MTR) | Not described in its listing | Yes |
| Path MTU (when some sites hang over VPN or PPPoE) | Not described in its listing | Yes |
| Ping and jitter to game regions and services used in your country | Not described in its listing | Latency Dashboard, with your router checked first |
| A report for your provider | With Fingbox: automated speed tests and reports to benchmark your ISP | PDF or text report from daytime and evening Health Score checks |
| Encrypted DNS, TLS, IPv6, NAT type | Not described in its listing | Yes |
| Account | Fing account available | None needed |
| Price | Free download; in-app purchases, Starter and Premium subscriptions | No subscription. iPhone: free with ads, a one-time $2.99 purchase removes them. Android: free, with occasional promotional partner links; a one-time $2.99 Premium adds 30- and 90-day bufferbloat trends and other countries’ latency lists |
“Not described in its listing” means we did not find the feature in Fing’s App Store description when we checked on 14 October 2026. Fing may still offer it, on another platform or in a paid plan. If anything here is out of date, write to us and we will correct it.
Fing is the better pick when…
- you want to know who is connected to your network and what each device is;
- you want security and device alerts on your phone or by email;
- you are staying in a rental and want to check for hidden cameras;
- you want to check for internet outages in your area or compare ISP ratings and reviews;
- you want parental controls or intruder blocking with a Fingbox.
NetDiag+ is the better pick when…
- the speed test looks fine, but games, calls or video still lag;
- you need to know whether to fix your Wi-Fi, change a router setting or call your provider;
- latency jumps when someone starts a download or an upload;
- some sites hang over a VPN or a PPPoE line;
- you want a report for your provider’s support, measured at the hours when the problem happens.
Using both
They don’t get in each other’s way. One way to split it: Fing to keep track of what is connected at home, NetDiag+ when the connection itself misbehaves. If evenings are slow and Fing shows more devices online, NetDiag+ shows whether your latency climbs under load at those hours.
Free · 31 tools on iPhone, 32 on Android · one-time purchase · no subscription
Questions
Is NetDiag+ a replacement for Fing?
Not for device discovery or home security, which are Fing’s strengths. NetDiag+ focuses on a different question: where a slow or unstable connection breaks down.
Which one should I use for game lag?
Start with NetDiag+: the Health Score and the bufferbloat test show whether the delay comes from your Wi-Fi, your router or the line, and the Latency Dashboard shows ping and jitter to the game regions used in your country. If you suspect another device is hogging the connection, Fing shows who is connected.
Do I need a subscription for NetDiag+?
No. There is no subscription and no account, and every tool works for free. On iPhone the app shows ads, and a one-time $2.99 purchase removes them. On Android it shows occasional promotional partner links, and a one-time $2.99 Premium adds longer bufferbloat trends and other countries’ latency lists.
Fing is a trademark of Fing Limited. NetDiag+ is not affiliated with or endorsed by Fing Limited.