Now I wish I also had one of those teccie thingys that send automatic sensor readings!!!! Must confess to always having liked technology, though.......
If you're planning on using it long term, I'd highly recommend getting a transmitter for it.
Being able to type in a bg reading really tightens up accuracy, and the algorithm also takes care of the lag. I've frequently had readings which are only 0.1 to 0.4 out against a bg test (but, hey, it's technology, so there will be fliers too!).
The graphs are also way more detailed, being composed of blue dots for every 5 min reading, instead of the averaged graph which libre shows.
The first one out was Ambrosia System's Blucon. It's regarded now as a bit "betamax" compared to the newer MiaoMiao, but it's a solid piece of kit and served me well for over a year before I got mm.
Two versions, one waterproof, the other not, and both beat mm price wise, £114 and £86.
If you're prepared to put up with the minor hassle of taking the non-waterproof one on and off for showers, it's a relatively cheap way into cgm.
There's a £7 post office handling fee and £20 import duty but that's reclaimable as it's a medical device, don't have the reclaim form link handy.
https://www.ambrosiasys.com
The newer entrant is MiaoMiao
Pricier at £156 (no handling or import fee), but it's leaner and waterproof. Again, a solid piece of kit, been using it for about five months now.
https://miaomiao.cool/
You can still scan with the reader while using them, and take them on and off during the 14 day duration.
The inhouse apps for both are fairly basic and very few of us use them.
If on android, the preference is for xDrip+, which was originally started by the open source group Nightscout to deal with perceived inadequacies of the early dexcom devices, and has continued to develop as a research project by a bloke called jamorham and other co-developers. It's not authorised by any regulatory body but has a long pedigree and is widely trusted by grateful users worldwide.
https://jamorham.github.io/
https://github.com/NightscoutFoundation/xDrip/releases
Here's an idea of the output: