CGM Comparison Guide
CGM Sensors in India 2026 — Compared
A continuous glucose monitor (CGM) is a wearable medical device that tracks blood sugar levels 24/7 without fingerpricks. In India, the three main CGM sensors are the GlucoRx Vixxa 2 (₹3,099–₹3,399/sensor, 15-day wear, CDSCO certified), the Abbott FreeStyle Libre 3 (~₹4,670/sensor, 14-day wear), and the Dexcom G7 (~₹12,000/sensor, 10-day wear). Below we compare them on price, accuracy, size, and availability.
Side-by-side comparison
Key specifications for three CGM sensors available in India.
| Feature | GlucoRx Vixxa 2 | Abbott Libre 3 | Dexcom G7 |
|---|---|---|---|
| Price / sensor (India) | ₹3,099–₹3,399 | ~₹4,670–₹5,000 | ~₹12,000 |
| Wear duration | 15 days | 14 days | 10 days |
| Sensor size | 22 mm × 4 mm, 2.16 g | 21 mm × 2.9 mm, 1 g | 24 mm × 12 mm, ~12 g¹ |
| MARD accuracy² | 8.66% | 7.8% | 8.2% |
| Reading interval | Every 60 sec | Every 60 sec | Every 5 min |
| Water resistance | IP68 (2 m / 60 min) | IP27 (1 m / 30 min) | 2.4 m / 24 hrs |
| Warm-up time | 55 min | 60 min | 30 min |
| Certifications | CE + CDSCO | CE + CDSCO³ | CE / FDA |
This page is published by GlucoRx, the manufacturer of the Vixxa 2 sensor. This comparison is for informational purposes only and does not constitute a claim of superiority. Individual results may vary. Consult your doctor or diabetes care specialist before selecting or switching your CGM.
*Specifications sourced from publicly available manufacturer data and may not reflect the latest product versions. All trademarks are the property of their respective owners. FreeStyle Libre is a trademark of Abbott Laboratories. Dexcom is a trademark of Dexcom, Inc.
¹ Dexcom G7 weight is for the integrated sensor/transmitter unit (source: ADA Consumer Guide). ² MARD figures are from each manufacturer’s published pivotal clinical trial data. MARD values from separate clinical trials are not directly comparable across devices as studies use different protocols and patient populations. The ADA Consumer Guide reports different values (Libre 3: 8.9% adult; Dexcom G7: 8.7% adult). ³ Abbott FreeStyle Libre is sold through official retail channels in India; CDSCO registration assumed but not independently verified. Sources: GlucoRx clinical data; Abbott FreeStyle Libre 3 IFU (DOC50021); Dexcom G7 FDA PMA P220005. Prices sourced from Apollo Pharmacy, IndiaMART, and Amazon.in as of April 2026. Dexcom G7 is available in India through third-party importers. Competitor data on this page was gathered with AI assistance from publicly available sources. AI tools can produce inaccurate information. If you spot an error, please email info@glucorx.co.in and we will correct it promptly.
What is a CGM?
A continuous glucose monitor (CGM) is a small wearable sensor that tracks your glucose levels around the clock. A thin filament sits just under the skin and measures glucose in interstitial fluid, sending readings wirelessly to an app on your phone.
Unlike traditional finger-prick tests that give you a single snapshot, a CGM shows trends, patterns, and real-time fluctuations throughout the day and night. This makes it easier to understand how food, exercise, stress, and sleep affect your glucose.
CGMs were originally prescribed for people with diabetes, but they are increasingly used by anyone who wants to optimise their metabolic health, manage pre-diabetes, or simply make more informed dietary choices.
How to choose a CGM
Five factors to weigh before you buy.
Price per day
A 15-day sensor at ₹3,099 works out to roughly ₹207/day. Compare that to shorter-duration or higher-priced sensors to find what fits your budget.
Accuracy (MARD)
Mean Absolute Relative Difference measures how closely the CGM tracks lab-grade blood glucose. Lower is more accurate — all three sensors listed here are under 9%.
Wear duration
Longer wear means fewer sensor changes and less waste. Duration ranges from 10 to 15 days across current options in India.
Companion app
Look for real-time glucose graphs, configurable alerts, trend arrows, and easy report sharing with your doctor.
Availability & support
Check whether the brand offers direct online ordering, local warranty, and customer support in your language.
Why people choose the Vixxa 2
Key differentiators that matter for everyday use in India.
Longer wear time
Vixxa 2 lasts 15 days per sensor — one of the longest available in India, which means fewer sensor changes per month.
Affordable daily cost
Starting at ₹3,099, the per-day cost is the lowest of the sensors compared here.
CE and CDSCO certified
Dual certification — CE marked in Europe and approved by India's CDSCO for import and sale as a medical device.
Every-minute readings
1,440 data points per day give you a detailed picture of how meals, exercise, and sleep affect your glucose.
Frequently Asked Questions
What is the cheapest CGM in India?
Of the three sensors compared here, the GlucoRx Vixxa 2 has the lowest price at ₹3,099 per sensor (6-pack) or ₹3,399 for a single sensor. The FreeStyle Libre 3 retails at approximately ₹4,670–₹5,000 per sensor (source: Apollo Pharmacy, April 2026). The Dexcom G7 is approximately ₹12,000 per sensor via third-party importers.
Which CGM sensor lasts the longest?
Of the three sensors compared here, the GlucoRx Vixxa 2 has the longest wear time at 15 days per sensor. The FreeStyle Libre 3 lasts 14 days, and the Dexcom G7 lasts 10 days.
Is the Vixxa 2 CDSCO certified?
Yes. The GlucoRx Vixxa 2 carries both CE certification (European) and CDSCO certification (India's Central Drugs Standard Control Organisation) for import and sale as a Class B medical device.
How accurate are CGM sensors?
CGM accuracy is measured by MARD (Mean Absolute Relative Difference) — lower is better. According to manufacturer clinical trials: Libre 3 reports 7.8% MARD, Dexcom G7 reports 8.2%, and Vixxa 2 reports 8.66%. All three are clinically reliable. MARD values from separate trials are not directly comparable.
Can I buy a CGM without a prescription in India?
Yes. CGM sensors like the Vixxa 2 and FreeStyle Libre are available without a prescription in India through online retailers including Amazon.in and brand websites.
Ready to try a CGM?
Start with the Vixxa 2 ₹3,099–₹3,399 per sensor. Free shipping across India.