Honest reviews and head-to-head comparisons of Dexcom, FreeStyle Libre, and other CGM devices.
Two FDA-authorized over-the-counter CGMs launched in 2024-2025: Abbott Lingo and Dexcom Stelo. Both require no prescription. Here is how they compare for non-diabetic and pre-diabetic users. Quick Comparison Abbott Lingo: Better coaching app, 14-day sensor, targets lifestyle users Dexcom Stelo: Simpler data view, 15-day sensor, better raw glucose reporting Cost: both approximately $99/month for OTC … Read more
CGM manufacturers publish accuracy data, but what do MARD, RMSE, and the other metrics actually mean for your daily use? This guide cuts through the technical language. What Is MARD? MARD stands for Mean Absolute Relative Difference. It measures the average percentage difference between CGM readings and reference blood glucose values (fingerstick or lab draws). … Read more
If you are on Libre 2 and wondering whether to switch to Libre 3, this comparison covers every meaningful difference — so you can decide if the upgrade makes sense for your situation. At a Glance Libre 3 is smaller, streams continuously, has better alarms, and costs about the same Libre 2 requires you to … Read more
The FreeStyle Libre 3 is Abbott’s best CGM to date — smaller than a penny, 14-day wear, real-time streaming, and alarms now included. It is also significantly cheaper than Dexcom on a per-month basis. Here is the complete picture. What Changed From Libre 2 The Libre 3 is meaningfully better than its predecessor: the sensor … Read more
Dexcom Stelo launched in 2024 as the first FDA-authorized over-the-counter CGM — no prescription required. It targets people with Type 2 diabetes not on insulin, and the broader metabolic health market. Here is our hands-on assessment. What Is Dexcom Stelo? Stelo is a CGM system specifically designed for people who do not use insulin. It … Read more
Choosing between the Dexcom G7 and FreeStyle Libre 3 is the most common question in CGM today. Both are excellent — but they suit different needs. This comparison breaks down accuracy, cost, alerts, and usability so you can decide. Quick Verdict Dexcom G7 wins for real-time alerts and tighter glucose control. FreeStyle Libre 3 wins … Read more