Signos Review 2026: FDA-Cleared App, Real Prices, and a 30-Day Guarantee That Is Not a Refund

You saw the ad. A glucose graph spiking after a bowl of cereal, a member story, a bold statistic. And your first thought was probably the smart one: is this actually FDA-cleared, or does the ad just make it sound that way? Good instinct. This review pulls apart the clearance record, the price sheet, and the fine print on the guarantee, so you can decide with the facts in hand rather than the pitch.

Disclosure: this is a paid advertorial for consumer education, and a commission is earned if you buy through links in this article. Claims including the "30-Day Guarantee" in the title are the brand's own and are not independently endorsed here. Details reflect brand materials reviewed in October 2026, so confirm current information before ordering.

TL;DR: Signos pairs a continuous glucose monitor with an app and registered dietitian support, positioned for adults who want real-time feedback on how food and activity move their glucose. FDA's K250106 summary (March 21, 2025) covers the app as an over-the-counter mobile app for people 18 and older who are not on insulin. Plans run 1, 3, or 6 months, the lowest rate sits on the six-month term, that term auto-renews, and the "30-Day Guarantee" is a free coaching audit, not a cash refund, per the brand.

What Is Signos and Who Is It For

Per the brand, Signos is a real-time metabolic health platform that pairs an AI-powered app with a continuous glucose monitor. It is positioned for adults working on weight management who want to see how specific foods, meals, and activity move their own glucose, rather than following a generic plan and guessing weeks later whether something worked.

The bundle is the selling point. The brand positions it as an alternative to piecing together a CGM, a dietitian, and a tracking app separately. It is not a diagnostic tool, a diabetes treatment, or a substitute for a physician's care, and the brand is explicit that users should not adjust food, exercise, or medication based on a sensor reading without consulting a healthcare professional.

Is Signos FDA-Cleared? What K250106 Actually Covers

This is where the ad language and the regulatory record tend to blur, so it helps to separate them cleanly.

What the clearance confirms

FDA's own public 510(k) decision summary, K250106, dated March 21, 2025, confirms the cleared system is an over-the-counter mobile app that receives data from a compatible integrated CGM sensor. The indicated population is adults 18 and older who are not on insulin. Readings update every 15 minutes, and the summary states the app provides no glucose alerts or alarms. The indications also include language that the information "may be useful in helping users to maintain a healthy weight," which is language about the usefulness of glucose data, not a clearance of weight-loss outcomes.

What it does not cover

Three things sit outside that clearance and are worth naming clearly:

• The sensor itself. The Dexcom Stelo sensor the brand references carries its own separate regulatory authorization. FDA's record for the Signos app lists it only as the predicate device in the clearance comparison.
• The coaching service. Registered dietitian support is a service, not an FDA-cleared device.
• The optional medication program. Any GLP-1 related program the brand discloses runs through an independent third-party licensed provider network, not through Signos.

So when the headline says "FDA-cleared app," that is accurate and narrow. It is not a blanket clearance of the whole membership, the coaching, or the outcomes.

"Cleared is not the same as approved, and app-level clearance is not the same as a whole-membership endorsement. Read the decision summary, not the headline."

Consumer research note, K250106 review

What Does Signos Actually Do

Per the brand, the system works in five layers:

• The sensor. A CGM sensor (the brand references Dexcom's Stelo) reads glucose continuously and sends data to the Signos app.
• The app. Combines glucose data with logged meals, workouts, and other habits to flag spikes and suggest adjustments, such as a specific type or intensity of movement.
• The scores. Daily and Weekly Metabolism Scores, as the brand calls them.
• The integrations. Apple Health, Google Health Connect, and some smartwatches and smart scales, according to the brand.
• The dietitian. A registered dietitian is included in the membership, per the brand, delivered via partner Nourish.

Buyers comparing options should know that a standalone CGM alone does not include coaching or an integrated app layer. That bundling is the core of what the membership price is paying for, per the brand's own cost comparison.

Pricing: Why You Might See Two Different Numbers

Signos prices its membership by commitment length rather than a single flat monthly rate. As of the pages reviewed for this article, the brand's plan page listed each term with two prices side by side: a displayed rate, and a higher reference figure next to it.

Rates as displayed on the brand plan page reviewed in October 2026. A 25% promo code ("AUTUMN25") was also referenced. Whether it is already applied to the displayed rate or stacks on top was not clearly stated.

Three things follow from those numbers. First, the $127 is a term price, not a cancel-anytime price, and lower monthly figures attach to longer commitments. Second, the higher reference figures are brand-stated comparison points, not an independently audited standard price. Third, if $127 holds for the full six-month term, that is roughly $762 before tax, shipping, and whatever the promo code changes. It is arithmetic from the displayed rate, not a confirmed checkout total.

The brand separately compares that bundle to piecing the same parts together solo, at around $100/month for a standalone CGM, $200+ per hour for an independent dietitian, plus a biodata device and tracking apps, for a brand-stated estimate of $800 or more per month. That comparison is brand-stated and attribute-only, not an independently verified market survey.

Auto-Renewal, Cancellation, and the 30-Day Guarantee

This is the part worth reading slowly, because it is where the marketing language and the contract language pull apart the most.

Auto-renewal and early cancellation

Per the brand's Terms and support material, memberships renew at the end of the selected term unless cancelled, at the then-current rate. The cancellation deadline is at least 24 hours before your term ends, submitted through the app. Stopping renewal is not the same as ending your current term. If you cancel before your current term is complete, remaining payments for that term are generally still owed, and no prorated refund is offered for the unused portion. An early-cancellation fee may apply, though the dollar amount was not confirmed on the pages reviewed.

The plans page also states "All sales final. No refunds or exchanges." beneath the checkout heading, and the Terms describe sales as generally final once a device has shipped, with limited exceptions tied to confirmed manufacturer defects.

The 30-Day Guarantee

Here is the part the title of this review is pointing at. The "30-Day Results Guarantee" is not a refund. Per the brand's own site, it is a free, personal data audit from a senior Signos coach if you have not learned something new about your body within 30 days, described by the brand as a $250 value. It does not cover a cash refund or money back on your membership fee.

So the honest framing is this: the guarantee is a coaching remedy, not a refund mechanism. Budget accordingly and do not expect cash back if the program is not a fit.

"Cancelling early does not refund the unused portion of your term. The real comparison is the monthly rate against what you would owe if you stop early."

Contract terms summary, October 2026

HSA, FSA, and Eligibility

On HSA and FSA, the brand states that funds may possibly be used, depending entirely on your plan administrator's rules, and that Signos is not responsible for reimbursement outcomes. If your plan does not qualify it, your effective cost is the full advertised rate with no offset. Confirm with your own administrator before you commit to a term, not after.

On eligibility, FDA's clearance names people 18 and older who are not on insulin as the indicated population. The live signup flow may screen for exclusions beyond age and insulin use, which this review has not independently confirmed. Anyone with a kidney condition, a history of severe low blood sugar, or an eating disorder should ask Signos support before purchasing.

Is Signos Right for You

This membership fits people who want ongoing, real-time glucose feedback tied to food and activity choices, plus built-in dietitian access, and who are comfortable with a recurring membership rather than a one-time device purchase. It is a weaker fit if you only want a bare CGM sensor with no coaching layer, if you are on insulin, or if you are looking for a diagnosis or a medication program rather than a behavior-change tool.

The brand is explicit that Signos does not diagnose, treat, cure, or prevent any disease or medical condition, and that clinical judgment on anything medication-related belongs to a licensed provider, not the app.

What to Verify Before You Order

Five things are worth confirming directly, because they change the real cost or the real risk.

1. HSA/FSA eligibility. The brand states coverage possibly applies and depends entirely on your provider. Confirm with your own administrator before assuming eligibility.
2. Sensor wear time and replacement. The brand's own cited data states roughly 77.9% of sensors lasted the full 15-day wear period in testing, meaning about 1 in 5 may not. What happens if a sensor fails early is not clearly disclosed on the pages reviewed, so ask support directly.
3. The optional medication program. Treat it as its own decision with its own separate terms, not a feature of the core CGM membership.
4. Final checkout total. Confirm the exact current price, any promo code terms, and whether a hardware bundle changes the monthly figure, directly at checkout.
5. Early-cancellation fee. The brand references an early-cancellation fee under certain conditions, but the dollar amount was not published on the pages reviewed. Ask for the fee in dollars before you select a term.

Frequently Asked Questions

Is Signos FDA-approved?

Not "approved," "cleared," and only the app, not the whole membership. FDA's K250106 decision summary (March 21, 2025) confirms the cleared system is an over-the-counter mobile app that receives data from a compatible integrated CGM sensor, for people 18 and older who are not on insulin, with readings updating every 15 minutes and no alerts or alarms. The clearance covers that display function, not every app feature, the dietitian coaching service, the sensor's own separate authorization, or the optional medication program.

Does the Signos guarantee mean I get my money back?

No. The 30-Day Results Guarantee is a free coaching data audit if you do not learn something new, not a refund. The plans page states "All sales final. No refunds or exchanges," and the Terms describe sales as generally final once a device ships.

Can I cancel Signos and get a refund for the rest of my term?

Generally no. Per the brand's Terms, remaining term payments are typically still owed after cancellation, with no prorated refund for the unused portion and a possible early-cancellation fee.

Can I use HSA or FSA funds for Signos?

Possibly, depending entirely on your specific HSA/FSA provider's rules. The brand states it is not responsible for reimbursement outcomes, so confirm with your provider first.

How long does a Signos sensor last?

The brand references a 15-day wear period for the sensor it uses, and discloses that in its own cited testing, about 77.9% of sensors reached the full 15 days, meaning a portion may run shorter. The replacement policy for an early-failing sensor is not clearly disclosed on the pages reviewed.

Does Signos prescribe medication?

No. Signos states it does not diagnose, treat, or prescribe. Any optional medication program the brand discloses is handled entirely by an independent, third-party licensed provider network, not by Signos.

The Bottom Line

Signos is a glucose-monitoring membership built from three separate pieces that should not be flattened into one blanket "FDA-cleared" claim, with a price structure that rewards reading the fine print.

• The app. FDA's own public decision summary confirms it is cleared (K250106, March 21, 2025) for receiving and displaying data from a compatible integrated CGM sensor.
• The sensor. The Dexcom Stelo sensor the brand references carries its own separate regulatory authorization.
• The coaching. Registered dietitian support is a service, not an FDA-cleared device.
• The price. The lowest monthly number belongs to the six-month term, which auto-renews, and cancelling early generally does not refund unused time.
• The guarantee. A coaching audit, not a refund. HSA/FSA eligibility is never guaranteed.

Positioned correctly, this is a bundle for people who want ongoing, personal feedback on how food and movement affect their glucose. Confirm the current price, your eligibility, and the cancellation window directly on the company's direct site before ordering.