Interesting how different our experiences are!
I’m finding the MiaoMioa with xDrip (on iPhone) generally more accurate than my Libre reader was. I calibrate it twice a day. It does drift off by up to 2 mmol/L sometimes. But overall, it’s a much better reflection of my blood sugar. It also responds more quickly to changes in blood sugar (although I notice that the LIbre, in general, responds much more quickly to changes than the Dexcom did).
I actually haven’t scanned with my Libre reader in a week. In part because I can’t find it. 