There is a new Android App called Juggluco for FreeStyle Libre 2 (and 1) sensors:
It not only can scan the sensor, but it also shows the glucose value received via Bluetooth every minute. You no longer need a Bluetooth sender like Miaomiao on top of the FreeStyle Libre sensor anymore. The Freestyle Libre 2 sensor sends very minutes the current glucose value to Juggluco (Miaomiao only every 5 minutes).
In contrast to the official app for FreeStyle Libre (Librelink), Juggluco shows the curve of previous glucose values in great detail. So it is easy to see the relative position of glucose values and events like meals, insulin injections and activity.
It should work with all versions of Android above 4.4 and available everywhere where you can access Google Play.
Juggluco isn’t approved by any official agency like FDA. Glucose values it shows are the same as Abbott’s Librelink app shows. But the Android version of Librelink is also not approved in the US for Freestyle Libre 2 sensors. What is the difference with the previous Freestyle Libre sensors and with the IOS version of Librelink? Naturally the Bluetooth connection with the Android app needed for Alarms. If you have alarms, they should be reliable. And Low Energy Bluetooth (BLE) has its problems under Android, maybe not under IOS. Sometimes the connection with the sensor is lost, for I don’t know what reason.
Juggluco has glucose alarms, and they are as reliable as Androids BLE is.
But in Juggluco you can constantly see what your glucose value is and if the connection with the sensor is missing, you can easily detect that. If for three minutes there was no new glucose value, no current glucose value is shown. Continuously showing the current glucose value, makes Juggluco more reliable, not less. (Also in Juggluco you can set a Loss of Signal alarm, which goes off, if for whatever reason, there is no new glucose value after a specified number of minutes.)
Another Android specific feature only relevant to alarms, is its fight against apps running in the background. For alarms an app needs to stay active when other apps are in the foreground and when the device is in doze mode. Android restricts this by default and the app has to ask the user for special allowance to get an exemption. A lot of Android device manufactories have imposed additional restrictions, which also can be turned off, but which all use a different interface and Librelink doesn’t handle any of them. Juggluco links to them in a Doze mode info dialog you can assess from a sensor info screen, but doesn’t direct to them at install.