The functions are very useful and we will. The device is solidly built and looks sturdy. The included text reading app is completely useless. Obviously this is a generic application, probably created by the maker of the Btle chip and of little or no value to this product. Luckily the btle configuration is easy to reverse engineer and there is a JavaScript library to interact with this tool. I'm using a simple web page that displays a chart and allows you to download data. It fixes all the shortcomings of the application.
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