Is Signos Free? Signos Pricing, CGM Cost and Refund Rules
ChatGPT 
Claude 
AI Mode 
Perplexity Signos is not free: its CGM plans list at $169 to $299 a month on the Signos plans page in September 2026, or $127 to $225 a month with the AUTUMN25 code shown across the site. The app download costs nothing, but it only works inside a paid plan that ships Dexcom Stelo glucose sensors, and every sale is final.
Prices checked on Signos' plans, Essentials and FAQ pages, its help center and its Terms and Conditions (last modified August 4, 2026), and on Dexcom's Stelo shop page, on September 27, 2026. Signos sells only in the United States.
A 2024 meta-analysis of 25 randomized trials with 2,996 adults found that feedback from a continuous glucose monitor (CGM) lowered HbA1c by 0.28 percentage points and added 7.4% more time in the normal glucose range, but had no significant effect on body weight or BMI (Richardson et al., 2024). As a NutriScan nutritionist, I keep that result next to Signos' price list. Signos sells a CGM as a weight-loss tool, and a 6-month plan costs more than $1,000 at list, so it is worth knowing exactly what you pay for and what you cannot get back.
IMPORTANT
Your Signos pricing check at a glance.
Four stops, so you know what you would really pay.
⏱️ Progress 0/4 • ~0 minutes in • Keep going
⏳ Step 1: What each plan costs per month and per term
⏳ Step 2: How much of that is the sensor and how much is the app
⏳ Step 3: Canceling, refunds and the "guarantee"
🧩 Whether the research supports paying for it (revealed near the end)
The quick answer: Signos is not free
Signos is a US company that pairs its own app with the Dexcom Stelo biosensor, a small round sensor you wear on the back of the upper arm for 15 days at a time. The sensor reads glucose every five minutes and sends it to your phone. The app adds meal logging, weight tracking, prompts to move after a glucose rise and chat with a dietitian.
The app is listed as "Free" on the US App Store, where it has a 4.6 rating from about 1,000 ratings. That listing is only a door. Signos' FAQ says it does not offer a bring-your-own-CGM option or a software-only subscription, and the app is built to work only with Stelo. There is no free tier, no free trial and no free month on any plan page I checked.
In August 2025 the FDA cleared the Signos system as the first over-the-counter glucose monitoring system for weight management, according to Fierce Biotech. No prescription is needed. The same report put the quarterly plan at $139 a month at the time. That plan lists at $199 a month today, so prices have gone up since the clearance, and the discount code now does much of the work of bringing them back down.
Signos price list for September 2026
Signos sells three kinds of plans, all listed on its plans page and GLP-1 Essentials page: CGM plans for anyone trying to lose weight, two GLP-1 plans, and a low-cost plan for people who already finished a full term.
| Plan | List price | With AUTUMN25 | Whole term at list | What ships |
|---|---|---|---|---|
| 1-Month CGM | $299 | $225 | $299 | 2 Stelo sensors |
| 3-Month CGM | $199/month | $150/month | $597 | 6 sensors |
| 6-Month CGM | $169/month | $127/month | $1,014 | 12 sensors, in two 3-month boxes |
| GLP-1 Essentials | $89/month | Not shown | $534 | 6 sensors over 6 months, no medication |
| Signos+ (GLP-1 + CGM) | From $199/month | Not shown | Depends on plan | Prescribed GLP-1 plus sensors |
| Sustain (returning members only) | $25/month | Not shown | Month to month | App only; sensors $99 per 2-pack |
Three details on that table matter more than the headline number:
- The code is 25% off the monthly price. $169 becomes $127, $199 becomes $150 and $299 becomes $225. With the code, the 6-month plan totals $762 and the 3-month plan $450.
- Long plans are paid monthly but owed in full. Signos' help center says that after you cancel, "all remaining payments associated with your current subscription term will be completed as scheduled." A 6-month plan is a 6-month commitment, not a monthly one.
- Plans renew for the same length. The Terms say a subscription that is not canceled "will automatically renew for the same duration," so a 6-month plan rolls into another 6 months.
The Signos FAQ says the plans are not covered by insurance. You may be able to pay with a Health Savings Account (HSA) or Flexible Spending Account (FSA), but Signos says it is not responsible for reimbursement and that its cancellation policy still applies if your provider says no.
What the price buys, and the Stelo math
The Signos homepage compares its membership with "doing it on your own" at "$800+ per month," built from a CGM at $100 a month, a smart ring or watch at $200 to $500, a dietitian at $200 an hour and other apps at $100 a month. That comparison assumes you would buy all of those things. Most people would not.
The cleaner comparison is the sensor itself. Dexcom sells Stelo directly on stelo.com with no prescription:
| Stelo bought from Dexcom | Price | Sensors |
|---|---|---|
| One-time 1-month supply | $99 | 2 |
| 1-month subscription | $89/month | 2 per month |
| 3-month subscription | $252 every 3 months ($84/month) | 6 per shipment |
Six months of Stelo on Dexcom's 3-month plan costs $504. Six months of Signos costs $1,014 at list or $762 with the code. So the Signos layer, meaning the app, its prompts, weekly scores and dietitian chat, costs about $510 over six months at list ($85 a month) or $258 with the code ($43 a month). Stelo's own page also lists access to 1:1 video calls with a dietitian or nutrition specialist, marked with a footnote, so live nutrition help is not unique to Signos.
What the extra money gets you, according to the plans page and FAQ:
- A glucose curve inside an app that also logs meals by photo, barcode or text
- Suggestions for the type and length of a walk or workout after a glucose rise
- Daily and weekly metabolism scores and health reports
- Weight, sleep and stress tracking, with Apple Health, Google Health Connect, smartwatch and smart scale syncing
- In-app chat with a dietitian and the option to book a video call
If you would read your glucose curve and change your meals on your own, the Stelo app and a food tracker cover most of this. If you want the prompts to tell you what to do next, the Signos layer is the product you are paying for.
The GLP-1 plans: Essentials and Signos+
Signos now sells two plans built around GLP-1 weight-loss drugs such as semaglutide and tirzepatide.
GLP-1 Essentials, $89 a month for 6 months. This is for people who already take a GLP-1 from their own doctor. Medication is not included. You get six 15-day sensors over six months, not two a month, because the idea is to wear one at key moments: when you start, after a dose change, at a plateau and at a milestone. The app adds dose logging, a body scan feature that estimates fat versus lean mass, and resistance training plans. Over the full term it costs $534, which is $30 more than six months of Stelo at Dexcom's 3-month rate, for half the sensors.
Signos+, from $199 a month on the plans page. This plan pairs a CGM with a GLP-1 prescribed through a clinician after a 2-minute intake quiz. The Terms show the prescribing is done by providers from OpenLoop, a telehealth partner, under a separate "Pharmaceutical Subscription Services" section with its own refund rules.
One inconsistency is worth knowing. Signos' FAQ page still says "Signos does not offer any prescription medications or medical supplements," while the plans page sells a clinician-prescribed GLP-1 plan. Read the plan page and the Terms, not the FAQ, if medication is what you are shopping for. For a side-by-side of other GLP-1 support programs, our Noom Med pricing guide covers the largest one.
After your plan ends: the $25 Sustain plan
Signos' FAQ says there is no software-only plan, but that applies to new members. Its help center describes a Sustain plan for people who have already completed a full subscription with Stelo sensors:
- $25 a month for app access, food logging, weight and body composition tracking, and nutritionist support
- No sensors included
- Optional Stelo 2-packs at $99 each, bought one pack at a time, and you need an active Signos subscription to pair them
The older Maintenance plan, $75 a month with six sensors over six months, is marked "no longer available" in the help center. Sustain replaced it.
The $99 Sustain 2-pack costs the same as buying a one-time Stelo 2-pack from Dexcom, and $10 more than Dexcom's own monthly subscription. If you move to Sustain, the $25 is the price of keeping the Signos app, not of cheaper sensors.
The "30-Day Results Guarantee" is not a refund
Signos' homepage lists a "30-Day Results Guarantee" as included in the membership. The footnote explains it: "If you don't learn something new about how your body loses weight, a Senior Signos Coach will personally audit your data for free (a $250 value)."
That is a free review of your data, not money back. The same plans page says, under the buy button, "All sales final. No refunds or exchanges." If you read "guarantee" as a refund window, you will be disappointed.
How to cancel Signos
Signos subscriptions are sold on its website, not through Apple or Google, so you cancel inside the Signos app or the member portal. From the Signos help center:
- Tap the Account & Settings icon at the top of the home screen.
- Go to Manage Subscription.
- Scroll to the bottom and tap Change Plan.
- Scroll to the bottom and tap Cancel Renewal.
- Tap Confirm.
Rules that come with that button:
- The Terms say you can cancel "at any time up to 24 hours before the end of your term through The App." Leave more room than that.
- Cancellation takes effect at the end of your current term. You keep using the app and sensors until then.
- Canceling the renewal does not stop the remaining payments of the current term.
- If you want to end a 3- or 6-month plan early, the help center says to email [email protected], and "subscriptions terminated before all payments are collected may be subject to a fee." Signos does not publish the fee amount.
- If a payment fails, the Terms say Signos retries the card six times before it deactivates the subscription.
Deleting the app does not cancel anything. If you paid with an HSA or FSA card, the plan still renews on that card unless you cancel.
Refund rules: why all sales are final
The Signos refund policy is one paragraph long. The Stelo sensor is an FDA-regulated medical device and "cannot be returned or repurposed once it has left the pharmacy or shipping facility. As such, all sales are final and not eligible for returns or refunds."
In practice:
| Situation | What Signos' own pages say |
|---|---|
| Changed your mind after the box shipped | No refund |
| Canceled partway through a term | No prorated refund; remaining payments still due |
| Ended a 3- or 6-month plan early | "Non-refundable cancellation fee may apply" |
| HSA or FSA provider rejected the claim | Cancellation policy still applies |
| Sensor failed or fell off | Email support for a replacement; early removal or wrong use is not covered |
| Prescription GLP-1 plan, disqualified by a provider | Refund for remaining charges after the disqualification |
| Prescription GLP-1 plan, any other cancellation | No refund, per the Terms |
The one good rule here is the sensor replacement. If a sensor fails, contact support before you remove it, because the FAQ says subscriptions "do not include free replacements for devices that are removed early or used incorrectly."
Who can buy Signos
Before you pay, check four gates. The plans page asks you to confirm each of these at checkout:
- You are 18 or older.
- You do not have problematic hypoglycemia and are not on dialysis.
- You are not on insulin, and you will not change your medications without your healthcare provider.
- You do not have an active eating disorder.
Signos also ships only to the 50 US states, not to APO or FPO addresses, and your app store must be set to the US to download the app. For phones, the FAQ lists iPhones on iOS 18.6 or later and Android 13 or later, with the best results on major brands such as Samsung and Google. Outside the US, the sensor-plus-coaching programs I have priced are ZOE in the UK and the HealthifyMe CGM plan in India.
If you have diabetes, talk to your doctor first
Signos says it is "not intended to prevent, treat, or cure diabetes," and Stelo is not for people on insulin. If you manage diabetes with medication, your care team decides which CGM fits, and the best app for CGM users guide covers apps built for that.
What the research says about CGMs for weight loss
This is the section the price depends on. I read the abstracts of the studies behind Signos' claims and the best independent work on CGMs in people without diabetes.
Signos' own data, 2025. A team from Signos analyzed 926 people without diabetes who used the Signos system between November 2021 and August 2023 (Dixon et al., 2025). People whose last glucose rise of the day came before 5:41 PM on average lost over three times as much weight at 6 months as those whose last rise came after 8:40 PM. This is a retrospective look at existing members, with no comparison group that went without Signos. It shows that earlier eating went along with more weight loss. It does not show that the app caused it.
Independent trials, 2024. The Richardson meta-analysis above pooled 25 randomized trials. CGM feedback helped glucose control a little, but the effects on weight and BMI were not significant. Only 3 of the 25 trials were in people with obesity, and 11 reported conflicts of interest with CGM makers. The authors called the effects "favourable, though modest" and asked for more research.
How repeatable is one meal's curve? 2025. An NIH team gave 30 adults without diabetes the same meals about a week apart while they wore CGMs (Hengist et al., 2025). Across 1,189 meal responses, the same person's glucose response to the same meal agreed only weakly, with a reliability score of 0.17 on Dexcom sensors. The authors concluded that diet advice based on CGM readings needs repeated measurements, not single meals. That matters for any app that labels a food a "spike" food after one try.
What normal looks like. In 153 healthy adults and children without diabetes, glucose sat between 70 and 140 mg/dL for a median 96% of the day, and above 140 mg/dL for about 30 minutes a day (Shah et al., 2019). If you are healthy, a few short rises after meals are expected, not a warning.
Where the "87%" figure comes from. Signos' FAQ says research shows "87% of CGM users change their food choices based on glucose feedback," and links to an 18-item survey of patients already using CGMs, published in the diabetes journal Clinical Diabetes (Ehrhardt and Al Zaghal, 2020). It measured what CGM users believe changed in their behavior. It did not measure weight.
My reading: a CGM is a reasonable way to learn how your meals and walks affect your glucose, and a 2023 review describes health and wellness as one of four growing uses for CGMs in people without diabetes (Klonoff et al., 2023). The evidence that seeing that curve makes you lose more weight than a plain calorie plan does is still thin.
Who the price makes sense for
It can make sense if you have tried calorie tracking, you respond well to live feedback, and you will open the app after meals for six months. The late-evening glucose pattern in Signos' own data is a concrete habit to test: move your largest meal earlier and see what happens. It also makes sense if you are already on a GLP-1 and want Essentials' periodic check-ins and muscle tracking at $89 a month.
It rarely makes sense if your goal is plain weight loss and the price will strain your budget. The weight effect in independent trials is not clear, and the same calorie deficit works with or without a sensor. If you have been eating less and the scale has stalled, the usual causes are logging accuracy and body adaptation, and a macro calculator gives you a target for free.
Compared with other metabolism gadgets, Signos costs more per month than Lumen's breath analyzer, which runs $249 to $299 in year one. Lumen measures the fuel you burn from your breath, while Signos measures glucose directly.
7 tips before you pay for Signos
- Price the term, not the month. "$127 a month" is a $762 commitment on the 6-month plan. Write the total down before checkout.
- Never pay list. In September 2026 the site banner showed AUTUMN25 for 25% off every CGM plan. If no code is showing when you buy, you are paying the full list price.
- Start short if you are unsure. The 1-month plan costs the most per month, but it is the smallest final sale. A single $99 Stelo 2-pack from Dexcom is an even cheaper test of whether you like wearing a sensor.
- Turn off renewal on day one. You keep the full term either way, and it removes the risk of a second 6-month term you did not plan for.
- Ask your HSA or FSA provider first. Signos says eligibility varies and that its cancellation policy applies if your claim is rejected.
- Test a meal twice before you ban it. The NIH duplicate-meal study shows one curve is not a reliable verdict on a food.
- Keep the sensor on until support replies. Early removal is not covered for replacement, so report a failing sensor while it is still on your arm.
How to buy or leave Signos without losing money: 5 steps
- Price the whole term. The 6-month plan is $1,014 at list or $762 with the code, and every monthly payment in the term is owed even if you cancel.
- Check eligibility. US address, a supported phone, and none of the medical exclusions: insulin, dialysis, problematic hypoglycemia or an active eating disorder.
- Test on the shortest plan. Try the 1-month plan, or a Stelo 2-pack from Dexcom, before a longer final sale.
- Cancel renewal in the first week. Account & Settings, Manage Subscription, Change Plan, Cancel Renewal, Confirm. You keep access to the end of the term.
- Keep the habit after the term. Move to Sustain at $25 a month, or keep logging meals in a cheaper tracker and buy a sensor 2-pack only for check-ins.
Where NutriScan fits
Signos charges for glucose feedback. NutriScan works on the food side: photo meal scans that return calories, protein, carbs and fat for mixed plates, with a free tier of 5 scans a week and Premium at about $59 a year. If you finish a Signos term and want to keep logging meals without the monthly fee, NutriScan's pricing is laid out the same way as this guide, and the cheapest nutrition app comparison sets it next to other trackers.
FAQ
Is the Signos app free?
The download is free on the US App Store, but the app only works with a paid Signos plan and a Dexcom Stelo sensor. Signos does not sell an app-only plan to new members. The cheapest way in is the 1-month CGM plan at $299, or $225 with the AUTUMN25 code shown on the site in September 2026.
How much does Signos cost per month?
In September 2026 the CGM plans list at $299 for 1 month, $199 a month for 3 months and $169 a month for 6 months. With the AUTUMN25 code they drop to $225, $150 and $127. GLP-1 Essentials, for people already on a GLP-1, is $89 a month for 6 months, and the Signos+ plan with prescribed GLP-1 medication starts at $199 a month.
Can I get a refund from Signos?
Usually not. Signos says all sales are final because the Stelo sensor is an FDA-regulated medical device that cannot be returned once it ships. Canceling does not give a prorated refund for the current term, and an early cancellation fee may apply on 3- or 6-month plans. For the prescription GLP-1 service, the only refund case in the terms is cancellation after a medical provider disqualifies you.
How do I cancel Signos?
In the Signos app, tap the Account and Settings icon, go to Manage Subscription, scroll down to Change Plan, then Cancel Renewal and Confirm. You can also cancel through the member portal. Cancel at least 24 hours before your term ends. The cancellation stops the next renewal, but the remaining payments of your current term still go through.
Is Signos worth it compared with buying Stelo directly?
Six months of Stelo sensors on Dexcom's 3-month subscription costs $504. Six months of Signos costs $1,014 at list or $762 with the current code, so you pay about $43 to $85 a month extra for the Signos app, its meal and movement prompts and dietitian chat. That is worth it only if you will use the prompts every day.
