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Glucose Monitors (CGM), Compared

Continuous glucose monitors went over-the-counter, but the pricing is confusing, sensors, subscriptions and coaching bundles. This ranks them by real cost per day with the specs that matter: wear time, accuracy and whether they support Android.

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Sorted by cost per day. Tap a column heading to re-rank.
Cost / day ▲MonitorTypeSensor wearAccuracy (MARD)AndroidBest for

Indicative pricing and specs as last reviewed 11 July 2026. Subscription prices used where available; prescription monitors depend on insurance. Not medical advice, talk to a clinician about managing diabetes. Confirm current pricing before buying.

How to choose. For wellness use, an over-the-counter monitor (Stelo or Lingo) is simplest at about $3/day. Wear time means fewer sensor changes, Stelo's 15 days is the longest. MARD is accuracy, lower is better. If you want food logging, a metabolic score and human or AI guidance, the coaching platforms (Nutrisense, Signos, Levels) cost more per day but bundle the software. Android users should note some apps are iPhone-only.
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Stelo or Lingo, which is better?

Both ~$89/month. Stelo wears 15 days, is a touch more accurate (8.3% MARD) and runs on Android and iPhone, plus links to Oura. Lingo wears 14 days with a daily wellness score, but its app is iPhone-only. Android users should pick Stelo.

Do I need a prescription?

No, for wellness use. Stelo and Lingo are over-the-counter for adults not on insulin. Prescription monitors (Dexcom G7, Freestyle Libre) are for diabetes management and may be insurance-covered.

What is MARD?

Mean Absolute Relative Difference, how far readings drift from a lab test on average. Lower is more accurate; 8-10% is typical here.