Lingo is the same device as the Libre3 from Abbott; it was suggested by a teacher in a diabetes education class I attended. The app is only for iPhones, so won’t work with an Android phone. It cost $89 for 2 units (=4 weeks) and can purchase at hellolingo.com.
I guess for an Android phone, you’d have to get the Dexcom. I chose the Libre3/Lingo just because it’s a little smaller.
Being pre-diabetic, I didn’t need the alarms, etc that the Libre3 app includes. I like the charts, etc better in the Lingo app. Since I had a prescription for Libre3 from my Dr, I tried both (alternating every 2 weeks). The cost was about the same, since Medicare only pays for it if I’m on diabetic meds, which I’m not.
It’s very informative to see how the glucose goes up after eating, etc.
I was fearful that it would hurt putting it on, but it doesn’t. I’m on the 3rd one now.