Used it on the Eurostar where the Wi-Fi is patchy. Google says it's offline. It's not. It said 0mph for the entire time I used it. This is my 8th attempt at finding a suitable speedometer that doesn't require payment of £14.99 per week or need Wi-Fi. Not worth using.
Developer reply
Hi Alex, Sorry to hear that, could you plz check if your gps is on? Internet is not required for this app to show the speed. Also if you can share issue related details to admin@codegun.in, I will try to provide a resolution. Thanks