Speedtest.net

Unlike other reviewers are leading you to believe,this actually does work with windows 10 mobile. I tested the results with this app and the website on my surface which can connect to 5ghz and the change was at most 5Mbps. 130Mbps speed average on both

Best Speedtest App Ever.

Brilliant app. I use it many times a day. Never fails or crashes. Gives accurate results. Plus, it's fast, light and has a stylish UI. No better app for checking your internet speed.

Seems to work ok for download speeds, but upload was wildly over actual. There are unlabeled buttons at the bottom of the UI. I selected one and apparently I began to purchase something. I stopped it, and no purchase went through, but I still have no idea what I was buying. Didn't think there would be a $$$ button next to the "run again" button..

Doesn't open on my Lumia 930.

Not accurate on w10m. Shows half the real speed and much higher than real ping. Need an update with fix!

The current version is not optimized for Windows 10 causing the measurement to lagg. Network speed test and this app is giving two way different readings where the NST app gives a more smooth measurement value through the whole test.

Sadly, the app, on Windows 10 mobile, appears to report download speeds that are aproxmently 50% slower than their new HTML5-based version (found at beta.speedtest.net) when performing tests on the same device over the same connection. Really needs to be updated for Windows 10. Especially since the iOS version worked much better.