Over-the-counter glucose monitors: Lingo vs Stelo
Short answer: Lingo is a little cheaper and reads every minute; Stelo lasts a day longer per sensor and can share data with your doctor. Both are sold without a prescription for adults not on insulin.
A continuous glucose monitor (CGM) is a small sensor worn on the back of your arm that shows how food, sleep, stress and exercise move your blood sugar.
Side-by-side comparison
| Abbott Lingo | Dexcom Stelo | |
|---|---|---|
| Wear time | Up to 14 days | Up to 15 days |
| 1 sensor | $49 (14 days) | $55 (15 days) |
| 2 sensors | $89 (28 days) | $99 (30 days) |
| Subscription | $84 / 2 sensors per 28 days; $249 / 6 sensors per 12 weeks | $89 / 2 sensors per month; $252 / 6 sensors every 3 months |
| Reading frequency | Every 1 minute | Every 15 minutes |
| Display range | 55–200 mg/dL | 70–250 mg/dL |
| Share data with your doctor | No (via app) | Yes (Dexcom Clarity) |
| HSA/FSA eligible | Yes | Yes |
Prices and specs come from the MCT2D (Michigan Center for Type 2 Diabetes) comparison, updated 2026-06-11 and checked by us on 2026-10-16. The makers' own sites did not show prices when we checked, so confirm at checkout.
Which one?
Lingo is a little cheaper and reads every minute, but it can't share data with your doctor through its app. Stelo lasts a day longer per sensor and can share with your care team through Dexcom Clarity. Neither one has low or high glucose alarms.
Dr. Sorrell's optimal fasting glucose is 70–84 mg/dL. Related lab tests: fasting glucose, fasting insulin and HbA1c.
Frequently asked questions
Do I need a prescription for Lingo or Stelo?
No. Both are sold over the counter for adults who are not on insulin.
How much do they cost?
Per the MCT2D comparison (updated 2026-06-11): Abbott Lingo $49 (14 days) for one sensor; Dexcom Stelo $55 (15 days) for one sensor. Confirm at checkout.
Which one can share data with my doctor?
Abbott Lingo: No (via app). Dexcom Stelo: Yes (Dexcom Clarity).
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