Best CGM for Metabolic Health 2026 (No Prescription)
Tested and reviewed by Dr. Michael Teplitsky, MD · Updated August 16, 2026
Stelo, Lingo, Levels, Nutrisense, Signos, and Ultrahuman — the no-prescription glucose monitors and coaching programs, compared honestly
The best CGM for metabolic health depends on whether you want cheap raw data or guided coaching. OTC sensors like Stelo and Lingo need no prescription and cost less; programs like Levels, Nutrisense and Signos add coaching, labs or dietitian calls at a higher price. Evidence for CGM benefit in non-diabetics is still emerging.
This article is for informational purposes only and is not medical advice. It does not diagnose or treat any condition. Talk to a clinician before making changes based on glucose data, especially if you have or suspect diabetes.
The best CGM for metabolic health in people without diabetes depends on what you're looking for: the lowest-cost way to see your glucose data, or a guided program that helps interpret it for you. Two over-the-counter sensors, Stelo by Dexcom and Abbott Lingo, require no prescription and provide raw data at the lowest cost. Programs such as Levels and Nutrisense pair a sensor with an app and coaching, labs or dietitian calls, but at a higher price. This page compares all of them by price, prescription need, sensor wear time, app and coaching, and accuracy. It also acknowledges that the evidence for CGMs in non-diabetics is still emerging.
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See Opt Health's metabolic program →The prices below are each company's own published figures, checked on October 13, 2026. Before buying, confirm current pricing with each company. To see how a CGM fits alongside other devices, read our guide to the best wearables for metabolic health.
OTC Sensors vs Software Programs: The Core Choice
The first decision is raw sensor versus guided program. OTC sensors give you glucose numbers cheaply with no prescription; software programs layer on an app, food logging, and human or AI coaching for a premium.
An OTC sensor like Stelo or Lingo is the low-cost, do-it-yourself route — you read the data and draw your own conclusions. A program like Levels, Nutrisense or Signos costs more because you are paying for interpretation: dietitian coaching, lab panels, spike scoring, and behavior guidance. Notably, some programs run their app on top of an Abbott or Dexcom sensor, so you are partly paying for software over the same hardware. If you are analytical and self-directed, a bare sensor often delivers most of the value at a fraction of the price.
| Company | Pricing | Best for | Details |
|---|---|---|---|
FeaturedYour company here, pinned above the other listingsGet featured → | |||
| Stelo by Dexcom | $89/mo subscription (2 sensors); $99 one-time 2-pack | Adults not on insulin wanting sensor only | Dexcom's over-the-counter glucose biosensor, worn up to 15 days, with the Stelo app and built-in AI coach; no prescription, adults 18+ not on insulin. |
| Lingo | $54 one sensor; $89 two; $249 six (12-week subscription) | Adults not on insulin wanting app-only tracking | Abbott's over-the-counter biosensor worn up to 14 days, with the Lingo app (logging, weekly patterns); no prescription, adults 18+ not on insulin. |
| Levels | $15/mo base; Core $399/yr (1 month CGM); Complete $1,329/yr | Members wanting CGM plus lab panels | Membership app with Stelo sensors included in Core (1 month) and Complete (2 months) tiers, plus lab panels; US only, Stelo needs no prescription. |
| Nutrisense | From $152/mo (6-month plan); $212/mo month-to-month | People wanting dietitian coaching with CGM | Program shipping 2 Stelo biosensors monthly with the Nutrisense app, Nora AI and 1:1 dietitian video calls (insurance-billed); no prescription needed. |
| Signos | $169 to $299/month list price, by plan length | Adults not on insulin focused on weight | Dexcom Stelo plans with two 15-day sensors monthly, AI app and dietitian chat; separate Signos+ plans add compounded GLP-1 prescribed by licensed clinicians. |
| Ultrahuman M2 Live | $99/mo subscription, 2 Lingo sensors monthly | Ultrahuman Ring owners and app-first trackers | Ultrahuman app subscription shipping 2 Abbott Lingo sensors monthly, 14-day wear each, with app and performance-coach access; no prescription needed. |
| Healthify | CGM add-on from $69; dietitian care billed to insurance | Insured adults wanting dietitian-guided CGM | Healthify app with registered-dietitian care (site says insurance-covered) plus optional CGM add-on, sensors worn 14 days; sensor brand and Rx handling not stated. |
| SNAQ | $60/yr; $27 per 3 months; $96 per 3 years | CGM users wanting AI meal logging | App subscription with photo, voice and barcode meal logging, CGM integration and post-meal glucose predictions; no sensor sold, US only for diabetes use. |
| FreeStyle Libre | Not published; cost depends on insurance coverage | People with a prescription for a CGM | Abbott's prescription-only CGM system, including the Libre 3 Plus sensor worn on the upper arm and read in a smartphone app. |
| Endobits | Free tier; Watch tier from $19/month | CGM users wanting a data platform | Decision-support software and companion app that runs on data from existing FDA-cleared CGMs; free tier, paid Watch tier from $19/month, no sensor sold. |
| US MED | Not published | Insulin users with Medicare or private insurance | Home-delivery diabetes supplier offering FreeStyle Libre 3 Plus and Dexcom G7 sensors, billed to Medicare and private insurance, with a free eligibility evaluation. |
| Quest Health Solutions | Not published | Buying a CGM with specialist help | Medical supplier selling FreeStyle Libre 14 Day, Libre 2, Libre 3, Dexcom G7 and G6 CGMs, plus Tandem t:slim X2 insulin pumps. |
| Vively | GBP 129 once, GBP 199 yearly, or GBP 129 monthly | UK, Australia or New Zealand CGM program | CGM program pairing a sensor with an app; plans include one 14-day sensor, an annual plan, or monthly sensors with dietitian coaching. |
| Gluroo | Not published | Logging CGM data with caregivers | iOS and Android app that logs glucose, meals and medications, integrates with Dexcom and FreeStyle Libre CGMs, and shares data with caregivers. |
| Aptiva Medical | Through Medicare or private insurance | Insurance-covered CGM supplies with home delivery | Home-delivery supplier of FreeStyle Libre and Dexcom CGMs that verifies insurance, works with your doctor for the prescription, and bills Medicare or private insurers. |
Pricing is as each company publishes it. Confirm current terms before you buy or sign up. Listed here? Update your listing.
Dexcom Stelo: Longest Wear, Data-First
Stelo by Dexcom is an over-the-counter biosensor for adults who do not use insulin, including people without diabetes. It needs no prescription and each sensor is designed to last up to 15 days, the longest wear among the current OTC options. It reports glucose to a phone app without human coaching.
Stelo suits the self-directed user who wants clean data and long sensor life at a moderate price, reported around $89 per month on subscription or about $99 for a two-sensor pack (verify current pricing at stelo.com). It is also the sensor Oura integrates for glucose in its app, so ring users often choose it. The trade-off: you interpret the data yourself, with no dietitian attached.
Abbott Lingo: Lowest Entry Price, Wellness-Focused
Abbott Lingo is an over-the-counter CGM built specifically for wellness in people without diabetes, and it has the lowest entry price of the group. A single 14-day sensor is $54 on Lingo's site, with cheaper per-sensor pricing on multi-packs ($89 for two, or $249 for six on a 12-week plan). It pairs with an app that offers glucose-spike coaching prompts.
Lingo is a strong pick to simply try a CGM without commitment. One honest limitation: it is designed to read glucose only within a wellness range (roughly 55-200 mg/dL), so it is not intended for people whose glucose swings outside that band. Verify current pricing and specs at hellolingo.com.
Abbott Libre Rio: Cleared, But Not Yet Widely Available
Abbott Libre Rio is an over-the-counter CGM aimed at adults with type 2 diabetes who do not use insulin, and it can be used by wellness-focused users, but availability lags the others. The FDA cleared it in 2024, yet as of October 2026 Abbott's US site lists no Libre Rio product, retailer or price.
Treat Libre Rio as one to watch rather than buy today. If you want an Abbott sensor now, Lingo is the shipping wellness product. Check freestyle.abbott for the latest availability, and do not rely on any specific launch date or price until Abbott confirms it.
Levels, Nutrisense, and Signos: Paying for Coaching and Labs
The software programs cost more because they add interpretation, not just a sensor. Each targets a slightly different user, so the right one depends on whether you want app data with lab panels, dietitian support, or a weight-focused program.
- Levels focuses on a polished app that scores your meals and glucose responses. Its Core membership is $399 a year with one month of Stelo sensors and two lab panels, and a $15-a-month base plan sells sensors and labs as add-ons. Best for the metrics-driven user who wants clean software.
- Nutrisense ships two Stelo sensors a month with its app and one-on-one registered-dietitian video calls (billed to insurance), priced from $152 a month on a six-month plan to $212 month to month with the promotion shown when we checked. Best if you want a human expert reading your data with you.
- Signos ships two Dexcom Stelo sensors a month with an AI app, food logging and in-app dietitian chat, listed at $169 to $299 a month depending on plan length. Its separate Signos+ plans, from $199 a month, add compounded GLP-1 medication prescribed by licensed clinicians through OpenLoop Health. Best if your main goal is using glucose feedback to manage weight.
Verify current pricing at levels.com, nutrisense.io and signos.com. Remember you are often paying a software premium over a standard Abbott or Dexcom sensor.
Does a CGM Actually Help Non-Diabetics? The Honest Answer
The evidence that CGMs improve health in people without diabetes is still emerging and far from settled. Most studies so far are small, short, and often funded by device makers, so strong claims should be treated with caution.
A 2024 systematic review found CGMs produced only modest glycemic changes in non-diabetic users, and reviewers note there is not yet enough evidence to broadly recommend them for healthy people. Where a CGM does seem to help is as a behavior-change tool: seeing your glucose spike after a specific meal can motivate real dietary changes, and some 2025 work suggests benefit when a CGM is paired with individualized nutrition guidance. In other words, the sensor is a feedback device, not a treatment. It is most valuable as a short learning experiment rather than a permanent purchase. To understand the underlying biology first, read our insulin resistance and metabolic syndrome guides.
Which CGM Should You Choose?
Match the device to your goal and budget rather than chasing a single winner.
- Cheapest way to try a CGM: Abbott Lingo, with the lowest single-sensor price.
- Longest wear and clean data: Dexcom Stelo, with up to 15-day sensors and Oura integration.
- Want a dietitian in your corner: Nutrisense.
- Focused on weight management: Signos.
- Want the most polished tracking app: Levels.
Whichever you pick, use it as a time-boxed experiment: wear it a few weeks, learn your food responses, and apply the lessons. Take our free assessment first to see whether insulin resistance or another factor should shape how you read your glucose data before you spend on a sensor.
Where to buy a CGM
Frequently Asked Questions
What is the best CGM for non-diabetics?
There is no single best CGM — it depends on your goal. For the cheapest way to try one, Abbott Lingo has the lowest single-sensor price. For the longest wear and clean data, Dexcom Stelo offers up to 15-day sensors. If you want coaching, Nutrisense adds a dietitian, Levels adds lab panels and Signos focuses on weight management.
Can I buy a continuous glucose monitor without diabetes or a prescription?
Yes. As of 2026, Dexcom Stelo and Abbott Lingo are over-the-counter CGMs sold without a prescription, aimed at wellness users and people without diabetes. Programs like Levels, Nutrisense, Signos and Ultrahuman ship OTC sensors as part of the plan, so you do not need to visit a doctor first.
Can a CGM help with weight loss?
A CGM may help indirectly by showing which foods spike your glucose, which can motivate dietary changes. But the evidence for real weight loss in non-diabetics is still limited and mostly from small, short studies. It works best as a feedback and learning tool paired with nutrition guidance, not as a treatment on its own.
How much does a CGM cost for metabolic health?
OTC sensors are the cheapest: Abbott Lingo is $54 for a 14-day sensor and Dexcom Stelo is $89 a month on subscription. Programs cost more: Levels Core is $399 a year with one month of sensors, Nutrisense runs $152 to $212 a month by plan length, Signos lists $169 to $299 a month, and Ultrahuman's sensor subscription is $99 a month. Verify current pricing at each vendor, as figures change often.
How long does a CGM sensor last?
It depends on the sensor. Dexcom Stelo is designed for up to 15 days of wear, the longest of the current OTC options, while Abbott Lingo sensors last 14 days. The software programs use similar 10-15 day sensors from Dexcom or Abbott underneath their apps.
Is CGM data accurate for people without diabetes?
OTC CGMs are reasonably accurate for tracking glucose trends and food responses, though they are less precise than a lab blood draw and some, like Lingo, only read within a wellness range. For non-diabetic wellness use, that accuracy is generally enough to learn patterns — just do not treat any single reading as a diagnosis.
Does insurance or Medicare cover a CGM for metabolic health?
Generally, no, not for the OTC options this page covers. Dexcom Stelo and Abbott Lingo are designed specifically to be bought without a prescription, and insurance and Medicare coverage for CGMs is built around prescription-based medical necessity (most commonly for people with diabetes), so an over-the-counter purchase typically falls outside what a plan will reimburse. That's part of the tradeoff already noted in the comparison table above: no prescription means faster access, but it also means paying out of pocket at the prices listed. If you have diagnosed diabetes, a prescription CGM through your doctor is a different pathway that insurance and Medicare are more likely to cover when medical necessity is documented, unlike the OTC wellness sensors compared on this page. Coverage rules vary by plan, so confirm your own policy's specific criteria before assuming either way.
What's the difference between a CGM and a regular fingerstick blood glucose meter?
The core difference is continuous versus single-point measurement. A fingerstick meter (glucometer) uses a drop of blood from a finger prick to give you one glucose reading at that exact moment, while a CGM like the sensors compared above uses a small filament under the skin to measure glucose in the interstitial fluid (the fluid between cells) continuously, typically every few minutes, showing the trend over time rather than a single number. That trend view is the main reason people choose a CGM for metabolic health: you can see how a specific meal, workout, or night of poor sleep moved your glucose over hours, not just where it stood at one moment. The tradeoff is cost and complexity: a fingerstick meter and test strips are cheap and simple but only give you scattered snapshots, while a CGM costs more (see the pricing above) and requires wearing a sensor for one to two weeks at a time. Interstitial glucose also lags blood glucose by several minutes, which is a normal characteristic of CGM technology, not an inaccuracy.
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