Stelo vs Lingo: CGM comparison

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Stelo vs Lingo: Which Over-the-Counter CGM Should You Buy?

Stelo vs Lingo is the choice most people face when they want a glucose sensor without a prescription. Dexcom Stelo and Abbott Lingo are the two over-the-counter continuous glucose monitors (CGMs) sold to U.S. adults today. Both sit on the back of your upper arm. Both send data to your phone. Both cost roughly the same.

The differences are smaller than the marketing suggests. Still, they matter. In this comparison, we look at sensor life, accuracy, apps, price and intended use. By the end, you will know which one fits your goals.

Quick Answer

• Choose Stelo if you want longer sensor life, a slightly lower reported error rate, and links to apps such as Apple Health and Oura.
• Choose Lingo if you like a simple daily score, one-minute readings and a cheaper first sensor to test the idea.
• Talk to your doctor first if you have diabetes, take glucose-lowering drugs or use insulin. These products are not made to manage those conditions.

Stelo vs Lingo: Head-to-Head Comparison

Feature	Dexcom Stelo	Abbott Lingo
Prescription needed	No	No
Sensor life	Up to 15 days	Up to 14 days
Reported accuracy (MARD)*	About 8.3%	About 9.3%
Reading frequency	Sensor reads about every 5 minutes	Every minute
Warm-up time	About 30 minutes	About 60 minutes
Approximate price**	About $89 to $99 per month	About $49 per sensor, $89 for two
Age range	Adults, and ages 2+ after a June 2026 FDA expansion	Adults 18 and older
Built for	Data, integrations and AI insights	Coaching and a daily score

*MARD figures come from separate manufacturer studies, so they are not a true head-to-head test. **Prices change often. Check each brand’s site.

Sensor Life and Warm-Up

Stelo lasts up to 15 days. Lingo lasts up to 14. That single day adds up over a year, because a Stelo two-pack covers a full 30 days. A Lingo two-pack covers 28.

Neither sensor always reaches the maximum. Reviews citing company data suggest that about one in five sensors from each brand fails early. Abbott states that it replaces a Lingo biosensor that stops working before 14 days. Check Dexcom’s current policy before you buy.

Warm-up also differs. Stelo is usually ready in about half an hour. Lingo takes closer to an hour. As a result, Stelo gives you data sooner after you apply it.

Accuracy: Is Stelo Better Than Lingo?

Manufacturers report a lower average error for Stelo (about 8.3 percent) than for Lingo (about 9.3 percent). Lower is better. However, the two ranges overlap. The studies were also run separately, so the numbers are not strictly comparable.

For everyday wellness tracking, the gap is unlikely to change your decisions. Both sensors are good at showing trends. Neither replaces a lab test. For more on this, read our guide to a continuous glucose monitor without diabetes.

Readings and Apps

Lingo samples glucose every minute, according to Abbott’s site. Dexcom’s sensor reads about every five minutes. The FDA’s summary of Stelo describes app updates every 15 minutes. Therefore, Lingo may draw a smoother after-meal curve in the moment.

The apps differ in style. Stelo offers food logging, AI-style insights and connections to Apple Health. It also works with the Oura Ring app. Lingo centers on coaching and a daily score. It syncs with Apple Health and Health Connect.

Older reviews called Stelo «data only» and Lingo «coaching only.» That is no longer accurate. Both now include meal logging and guidance. Your choice will mostly come down to which app you enjoy opening every day.

Price: What You Really Pay

Stelo sells in two-sensor packs at roughly $89 to $99 per month, depending on whether you subscribe, according to Pharmacy Times. Lingo launched at $49 for one sensor and $89 for two, and MedTech Dive reported that pricing matched Dexcom’s monthly cost.

Both work out to about $3 per day when worn full time. That is roughly $1,050 to $1,200 per year. Lingo’s $49 single sensor is the cheaper way to test the idea. If you keep going, though, the yearly cost is nearly the same. Insurance generally does not cover either one.

Medical Use and Safety Limits

Both products target people who do not use insulin. Lingo is a wellness tool for adults. Stelo’s clearance also covers people with diabetes who do not use insulin. The FDA extended it to children aged 2 and up on June 12, 2026, as HCPLive reports. Pediatric use needs adult supervision.

The FDA also notes that Stelo does not alert you to dangerous lows. Therefore, it is not meant for people with problematic low blood sugar. If you take insulin or similar drugs, ask your care team about a prescription CGM instead.

Who Should Buy Which?

Buy Dexcom Stelo if you:

• Want the longest sensor life and a faster warm-up
• Already use Apple Health or an Oura Ring
• Prefer a data-first app with food photo logging

Buy Abbott Lingo if you:

• Want a cheap first sensor to try the concept
• Like a single daily score and coaching prompts
• Prefer one-minute readings

Still undecided? Our list of the best glucose monitor for non-diabetics also covers coaching programs. Already have a CGM? See the best smartwatch for diabetics to view readings on your wrist.

Frequently Asked Questions

Is Stelo or Lingo more accurate?

Stelo reports a slightly lower average error. However, the difference is small and comes from separate studies. Both suit wellness tracking.

Which is cheaper, Stelo or Lingo?

Lingo is cheaper for a first sensor. Over a year, both cost about $3 per day. Prices change, so verify them before buying.

Do I need a prescription for either one?

No. Both are sold over the counter to adults who do not use insulin.

Can I use Stelo or Lingo if I have type 2 diabetes?

Stelo’s clearance includes people with diabetes who do not use insulin. Lingo is a wellness product. In either case, talk to your healthcare provider first.

Can a smartwatch replace a CGM?

No. The FDA has warned that smartwatches and rings that claim to measure glucose without piercing the skin should not be used for that purpose.

The Bottom Line

There is no single winner in the Stelo vs Lingo debate. Pick Stelo for longer wear, faster warm-up and stronger integrations. Pick Lingo for a low-cost trial, one-minute readings and score-based coaching. In both cases, treat the data as a learning tool and not as a diagnosis.

Sources

We do not test devices ourselves. Alongside the sources linked throughout this article (Abbott’s official Lingo site, the FDA, Pharmacy Times, MedTech Dive and HCPLive), we also drew on:

• Dexcom Stelo pricing and availability — HCPLive
• Independent comparison of Stelo and Lingo at launch — Wareable

Last updated: September 2026. Prices, sensor specifications and regulatory status change over time — always confirm current details with the manufacturer.

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Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Stelo and Lingo are consumer glucose monitoring products and are not a substitute for professional care. Features, prices and regulatory status change over time, so verify details with the manufacturer. Always consult a qualified healthcare provider before making decisions about your health, especially if you have diabetes or take medication that lowers blood sugar.