nPerf is best known as a speed test, with coverage maps of 2G to 5G beside it. LastBar is a coverage map made for the moment you have no signal, and it works with no connection.
In short
| nPerf | LastBar | |
|---|---|---|
| Made for | Testing the speed of your connection, mobile or fixed | Finding signal when you have none |
| Speed test | Yes: download, upload and latency, ad-free by its own account | A small download test now and then, to rate a place |
| Coverage map | Mobile coverage in 2G, 3G, 4G, 4G+ and 5G | A map made by its users, of every carrier, with the places measured with no signal |
| Works with no connection | A speed test needs one | Yes: the map and Find Signal work offline |
| Guides you to signal | Not among its features | Find Signal: distance and direction to the nearest signal |
| Platforms | Android, iPhone and iPad, PC and Mac, and the web | Android and iPhone |
What nPerf is good at
nPerf measures the bandwidth of almost any connection, from fibre and cable to Wi-Fi and 2G to 5G, and shows mobile coverage in your area. Its desktop app adds streaming and browsing tests. If you want numbers for how fast your connection is, it is a good choice.
What LastBar does differently
When there is no signal at all, a speed test has nothing to test. LastBar keeps the coverage of the places around you on the phone, so it can still tell you where the nearest signal is, how far and in which direction, and what kind: enough for an emergency call on any carrier, for a call or SMS on your own, or for data.
When to use which
- To measure your connection: nPerf.
- To find a connection when you have none: LastBar.
The features of nPerf above are as its website described them on 26 October 2026. Check its store listing for what it does today.
