Stelo versus Lingo:
Stelo has fewer data points per hour. Not sure whether that’s good or bad, as the Lingo’s data sometimes looks weird (eg, a peak 10 points higher that lasts a very short time). I also found the Lingo to be weird sometimes, because you could watch the blood sugar go up in the morning or after eating, faster than what the Stelo does.
Lingo “rates” spikes, though often these are not spikes due to food for keto folks. Stelo also helps with data analysis, particularly on the website. I don’t currently have enough data to do anything with that.
To get better data, you log into a website for Stelo, whereas for Lingo, you use the app on your phone and it’ll send you a CSV file of the data.
Both of them won’t let you lower the range lower than 70, and I believe they don’t tell you where you get.
For the Stelo, I can move the graph on the app, say if I want to see the highest level, but it doesn’t tell me what that level was. The Lingo does do that. (And maybe I just don’t know where this is in the Stelo).
As for the location of the sensor, I put it all the way at the side of my arm toward my chest. This location isn’t great, as I had a hard time going around the sensor to help attach it to the arm and also to put the extra seal on, which the Stelo uses. (The Lingo only has one seal, which I like better.) I can’t tell whether this is good or bad, as I’m still getting weird up/downs at night. Not sure if this is due to being a side sleeper and sleeping on the sensor.
Both of them are too expensive, the Stelo is $110/month, and the Lingo is similar.