[zippergz]

The Libre only gives you a reading when you manually check it, right? Or did I misunderstand that? I wouldn't want to lose the low/high/rate of change alerts the Dexcom gives. Even if you're sleeping, it'll wake you up if the blood sugar starts getting low.

[pimeys]

Officially, it stores 8 hours of data in five minute intervals and you have to read it with an NFC device, so automatic alarms are a no-go.

If you want to hack, it is possible to turn the Libre to have automatic alerts. I did it, it's not perfect, but if you have nightly hypos which you don't notice, this can be helpful:

https://github.com/pimpimmi/LibreAlarm/wiki

http://www.freestylesticker.com/product/freestyle-libre-cgm-...

If you're in Europe, I have one modded Sony Smartwatch 3 which I can sell :)