This webapp makes use of WebBluetooth to read data from the cheap Atorch power meters. Any web browser with WebBluetooth support should work, including Chrome based browsers on desktop and Android.
This should work with most of the power meters made by Atorch. It has only been tested with the USB version, but the others should work too. (pull requests welcome).
This should work with any hardware that is supported by the E-test app.
The specific model used for development was the Atorch J7-C, purchased here.