Dexcom Stelo vs Abbott Lingo

Reviewed by the JForH team · 2026-10-30

Stelo and Lingo are over-the-counter CGMs for adults 18 and older who don't use insulin. Stelo lasts up to 15 days and is meant to include people with type 2 diabetes on pills. Lingo lasts up to 14 days and is sold for wellness, not diagnosis. In October 2026, Stelo was $89 a month by subscription and Lingo $54 for two weeks. Neither alarms for dangerous lows, so people on insulin need a prescription CGM.

What's the difference between Stelo and Lingo?

Both are over-the-counter continuous glucose monitors (CGMs) for adults 18 and older who don't use insulin. The main difference is who they're aimed at. Dexcom sells Stelo to people with type 2 diabetes who don't use insulin, as well as people without diabetes. Abbott sells Lingo as a wellness product and says it is not meant to diagnose any disease, including diabetes.

Both are small sensors you wear on the back of your upper arm. A thin filament sits just under the skin and checks your sugar all day and night. Neither needs a prescription.

Here's what each maker publishes as of October 2026. We don't rank them. Check the maker's page before you buy, because prices change.

Which costs less, Stelo or Lingo?

For a full month of wear, Stelo costs less at the prices we found. Stelo's monthly subscription is $89 for two sensors. On Lingo's own site, the plan we saw was $54 for two weeks, so two of them come to $108 for four weeks.

For a one-off two-week look, Lingo is cheaper at $54. Stelo doesn't sell a single sensor on its site. Its smallest order is two sensors for $99.

Stores such as Amazon and Walmart also sell both, sometimes at different prices. Dexcom says all Stelo sales on its site are final.

Can I use my HSA or FSA for Stelo or Lingo?

Yes. Dexcom lists Stelo as HSA/FSA eligible, and Abbott lists Lingo as HSA/FSA eligible. Insurance usually doesn't pay for either one, so you buy them yourself.

Does Stelo or Lingo warn me about low blood sugar?

No. Neither is built to alarm you when your sugar drops dangerously low. When the FDA cleared Stelo in March 2024, it said Stelo is not for people with problematic lows, because it isn't designed to warn of them.

That's the biggest reason these devices are not a stand-in for a prescription CGM if you take insulin.

Is Stelo or Lingo good for type 2 diabetes?

Stelo, if you don't use insulin. The FDA named people with diabetes who take oral medicines as one of the groups Stelo is meant for. Abbott positions Lingo for general health. It also has a separate over-the-counter CGM, Libre Rio, cleared for adults with type 2 diabetes who don't use insulin. When we checked, we couldn't confirm Libre Rio was on sale in the US.

Either sensor can show you patterns your meter misses. You might see that your usual breakfast cereal sends you much higher than eggs and toast. Or that a 10-minute walk after dinner flattens your evening curve. In our glucose report, a typical rise after eating was 63 mg/dL and peaked about 65 minutes after it began.

Don't change any diabetes medicine because of a reading from either device. Talk to your care team first. The FDA says the same about Stelo.

When is a prescription CGM better than Stelo or Lingo?

When you take insulin, or a pill that can cause lows. Prescription CGMs, such as the Dexcom G7 and FreeStyle Libre 3 Plus, can sound an alarm when your sugar is going too low or too high.

A prescription CGM is usually the better choice if any of these apply:

• You use insulin. Neither Stelo nor Lingo is cleared for you.
• You take a sulfonylurea, such as glipizide or glimepiride, which can cause lows.
• You've had a low where someone else had to help you.
• You have Medicare. Part B may cover a CGM if you take insulin or have a history of problem lows, and you usually pay 20% after your deductible.

The ADA's 2026 Standards of Care name over-the-counter CGM as one of three kinds of CGM. They also encourage doctors to think about diabetes technology soon after diagnosis. If you're not sure which fits, ask your doctor.

How long should I wear an over-the-counter CGM?

Two to four weeks is often enough to learn your main patterns. The ADA suggests looking at about 14 days of CGM data at a time. Many people wear one sensor, change a few habits, and then wear another later to see what changed.

Keep your finger-stick meter nearby. If a reading doesn't match how you feel, check with your meter.

Does it hurt to put on a Stelo or Lingo sensor?

Most people feel a quick pinch. The applicator places the filament under the skin in one press. In the FDA's review of Stelo, reported problems included skin irritation, pain or discomfort, and local infection. Change sites each time and keep the skin clean and dry before you apply.

This guide is for education. It is not a recommendation for one product over another and does not replace advice from your own doctor.

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Last updated: 2026-10-30. Educational information, not medical advice. Talk to your doctor before changing your treatment.