weightlossprotips

Category · Updated 2026

Continuous glucose monitors

Consumer CGMs are the most under-rated weight-loss tool of the last five years. You wear a small sensor on the back of your arm for 14 days and watch — on your phone — how each meal, walk, and stressor moves your glucose. It rewrites the way most people eat within a month.

How we picked

  • 14-day sensor life minimum
  • No fingersticks or calibration required
  • Available over-the-counter (no prescription needed)
  • Companion app that shows meal-by-meal insights, not just raw graphs
  1. #1 Editor's pick
    Stelo — Dexcom

    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
    Read full reviewVisit
  2. #2 Top rated
    Lingo — Abbott

    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
    Read full reviewVisit
  3. #3 Top rated
    Libre Rio — Abbott

    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
    Read full reviewVisit
  4. Nutrisense — Nutrisense

    Nutrisense

    Nutrisense

    CGM + dietitian coaching — full-service metabolic program

    4.4

    $225 / mo

    • Includes 1:1 registered dietitian coaching
    • Highest-quality food-logging integration in the category
    • iOS and Android both supported
    • By far the most expensive option
    Read full reviewVisit
  5. Levels — Levels Health

    Levels Health

    Levels

    Metabolic-fitness membership with elite-tier data visualization

    4.3

    $199 / yr + sensors

    • Best data visualization and pattern-finding of any CGM app
    • Membership includes a comprehensive metabolic blood panel
    • 'Zone Score' metric turns messy data into a clear signal
    • Annual membership on top of sensor cost
    Read full reviewVisit
  6. Signos — Signos

    Signos

    Signos

    CGM + AI weight-loss coaching — real-time glucose-triggered nudges

    4.3

    $149 / mo

    • Only CGM app that triggers real-time exercise nudges from glucose spikes
    • Includes food-photo AI logging
    • Weight-loss-first framing — not general wellness
    • Notifications can feel intrusive at first
    Read full reviewVisit

Best for a specific use case

Best CGM for Weight Loss (No Prescription)

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Best CGM With Coaching & Dietitian Support

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Cheapest CGMs Without a Prescription

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