Abbott
Libre Rio
Data-first OTC CGM from the maker of the FreeStyle Libre
4.5
$49 / sensor
- Cheapest per-sensor cost of any consumer CGM
- FreeStyle Libre 3 hardware — proven accuracy
- iOS AND Android from day one
- App is stripped-down vs Lingo
Editorial roundup · Updated 2026
Cheapest CGMs Without a Prescription
You don't need a $200/month program to try a CGM. These are the OTC options with the lowest per-sensor cost and no subscription required.
How we picked
We ranked by per-sensor price with no subscription, accuracy, and whether the app is usable on both iOS and Android.
#1 Editor's pick #2 Top rated Dexcom
Stelo
First OTC CGM in the US — 15-day wear from the maker of the gold standard
4.7$99 / mo
- Most accurate consumer CGM on the market (Dexcom hardware)
- 15-day wear — longest of any OTC option
- No fingersticks or calibration
- App is more clinical than gamified
#3 Top rated Abbott
Lingo
Consumer-first CGM with a coaching app built for beginners
4.5$89 / mo
- Most beginner-friendly app in the category
- Gamified 'Lingo Count' score keeps you engaged
- Uses proven Abbott FreeStyle Libre hardware
- iOS only — no Android support yet
