Signos
Signos
As of August 2026 we track 6 continuous glucose monitors available here, and the cheapest one you can buy without a prescription is the Dexcom Stelo at about $99.00 a month.
Specifications
| Wear time | 15 days |
|---|---|
| Warm-up | 30 minutes |
| Accuracy (MARD) | Not published |
| Readings | every 15 min |
| Alarms | No |
| Prescription | Not required |
What does the accuracy figure mean?
MARD is the average gap between what the sensor says and what a laboratory blood test says, as a percentage. A 10% MARD means readings are off by about 10% on average — so a true 7.0 mmol/L might show as anywhere around 6.3 to 7.7. Lower is better. Most current sensors sit under 10%; twenty years ago they were over 20%. No sensor is exact, which is why treatment decisions still get confirmed with a fingerstick when a reading does not match how you feel.
Pricing
$225.00
to try · 30 days
$2,700.00
per year
- per sensor · 15 days
- Not published
- per month
- $225.00
The least you can spend to wear one sensor for its full life. For subscription products it is one month, because you cannot buy less.
Estimated from the sensor price and its wear time, assuming continuous use.
Prices last checked: 2026-08-05
What works well
- Two sensors a month included, so there is no gap between wears
- Weight-focused coaching built around the readings rather than raw numbers
- No prescription needed for the CGM-only plans
What to watch out for
- The month-to-month plan is $225, more than twice what the same sensor costs bought directly from Dexcom
- The cheapest per-month rate requires committing to six months up front
- No alarms and no accuracy figure of its own — the hardware is Dexcom’s
Our verdict
You are paying for the coaching, not the sensor. The hardware is the Dexcom Stelo, which Dexcom sells for $99 a month on its own, so judge Signos on whether the weight-loss programme is worth roughly double that.
What you are actually buying
Runs on Dexcom Stelo
| This programme, per year | $2,700.00 |
|---|---|
| Same sensor bought directly, per year | $1,188.00 |
$1,512.00 more than buying the sensor on its own
The hardware is identical. The difference is the app, the coaching and the subscription.
Common questions
- Which sensor does Signos use?
- The Dexcom Stelo. The Signos app works only with that sensor.
- How much does Signos cost?
- From $225 a month on the rolling plan, falling to $150 on a three-month plan and $127 on a six-month plan. Every plan includes two sensors a month.
- Do you need a prescription for Signos?
- Not for the CGM-only plans. The GLP-1 option involves a clinician.