Several CGM devices are available in the US in 2026, and the lineup keeps shifting as manufacturers release newer variants (FreeStyle Libre 3 Plus, Dexcom G7 15 Day, Eversense 365). Two current models are OTC, the rest require a prescription. The best device depends entirely on your diagnosis, insurance status, and monitoring goals. This guide covers the top pick for every situation.
Medical Disclaimer: This content is for informational purposes only. Always consult your healthcare provider before making health decisions.
Best overall: FreeStyle Libre 3 (prescription) · Best OTC: Abbott Lingo · Best for AID: Dexcom G7 · Best value OTC: Abbott Lingo ($89/month) · Longest sensor life: Dexcom Stelo (15 days)
| Device | MARD | Sensor life | Monthly cost | Rx required | Best for |
|---|---|---|---|---|---|
| Abbott Lingo | 8.1–10.7% | 14 days | Check price | No | Best value OTC, non-diabetics |
| FreeStyle Libre 3 | 7.8% | 14 days | Check price | Yes | Best accuracy, non-AID users |
| FreeStyle Libre 3 Plus | Not independently published | 15 days | Check price | Yes | Newer 15-day Libre variant |
| Dexcom G7 15 Day | 8.0% | 15 days | Check price | Yes | Current recommended adult G7 variant |
| Dexcom G7 (10 Day) | 8.2% | 10 days | Check price | Yes | AID systems, Apple Watch users |
| Dexcom Stelo | 7.3–9.1% | 15 days | Check price | No | Data-oriented OTC users, Clarity users |
| Medtronic Guardian 4 | 8.8% | 7 days | Varies | Yes | Medtronic AID pump users |
| Eversense 365 | 8.8% | 365 days | Varies | Yes + procedure | Users wanting 12-month implantable |
| Eversense E3 | 9.1% | 180 days | Varies | Yes + procedure | Users wanting 6-month implantable |
With and without insurance — for any monitoring period.
FreeStyle Libre 3 leads on published accuracy (7.8% MARD), reads every minute, lasts 14 days, and costs $130/month at retail — significantly less than the G7. For most users not on AID systems, it is the strongest clinical CGM available. Often covered by insurance for qualifying patients. Full Libre 3 review →
Abbott Lingo at $89/month is the lowest-priced OTC CGM (FDA range: 8.1–10.7% MARD), and it runs on the FreeStyle Libre sensor platform with a 14-day wear. No prescription needed, available at major retailers. The Lingo Score app is more approachable than Dexcom Stelo's data-heavy interface. Dexcom Stelo's published range (7.3–9.1% MARD) is lower, so choose Stelo if accuracy matters more to you than price. Full Lingo review →
If you use or plan to use an automated insulin delivery system (Tandem Control-IQ, Omnipod 5, etc.), the Dexcom G7 is the only practical choice. It is compatible with more AID platforms than any other CGM. Direct Apple Watch display is also a notable advantage. Full G7 review →
For wellness monitoring without a prescription: Abbott Lingo ($89/month) is the best value, being the lowest-priced OTC option. Dexcom Stelo ($89–99/month) has a lower published MARD range and is the stronger data platform with Clarity integration and 15-day sensor life. See our full CGM for non-diabetics guide.
Dexcom Stelo has the longest sensor life of any OTC device at 15 days. Among implantable CGMs, Eversense 365 now lasts up to 365 days, and the older Eversense E3 (180 days) remains available alongside it — both require a minor clinical procedure for insertion and removal.
Every device side by side — 30, 90, or 365 days.
Full specifications, accuracy, and pricing for every CGM in 2026.
Compare all CGM devices →