The CGM Boom: Why Everyone’s Tracking Glucose Now

Last Updated on 06/06/2025 by Casino

You don’t need diabetes to wear a Continuous Glucose Monitor (CGM) anymore.

In 2025, CGMs have gone mainstream—used by biohackers, fitness fanatics, productivity nerds, and even weight loss communities (hello, Ozempic crowd). From tracking post-meal crashes to optimizing mental focus, CGMs are now being used as real-time insight machines.

But which ones are actually worth strapping to your arm?

Let’s break down the top 5 CGMs on the market—and who they’re really for.

The Top 5 CGMs of 2025 (Reviewed)

1. Dexcom G7

• Best For: Seamless data sync + FDA-approved accuracy
• Pros:
  • Easy mobile pairing
  • 10-day sensor life
  • Great for integration with Apple Health, Garmin, etc.
• Cons:
  • Expensive without insurance
  • Slight learning curve for setup
• Pricing: ~$300/month (varies with insurance)
• Where to Buy: Dexcom.com
• Tip: If you’re pairing with wearables or tracking sleep, G7 is your biohack buddy.

2. Freestyle Libre 3

• Best For: Beginners + budget-conscious users
• Pros:
  • Super slim sensor
  • No fingersticks needed
  • App-friendly + fast onboarding
• Cons:
  • Slightly delayed glucose reading vs Dexcom
  • Sensor adhesion could be better
• Pricing: ~$150/month
• Where to Buy: FreeStyleLibre.com
• Tip: Great entry-level CGM for testing how glucose impacts focus or fasting.

3. Levels (Powered by Libre)

• Best For: Biohacking lifestyle + metabolic health insights
• Pros:
  • Gorgeous app interface
  • Real-time trend analysis
  • Weekly insight reports
• Cons:
  • Still invite-only (as of mid-2025)
  • Powered by Libre hardware, not Dexcom
• Pricing: ~$199/month subscription
• Where to Buy: LevelsHealth.com
• Tip: Think of it as the Notion of CGMs—clean, powerful, and designed for peak performance freaks.

4. Nutrisense

• Best For: Personalized coaching + meal analysis
• Pros:
  • Paired with a registered dietitian
  • Weekly behavior feedback
  • Custom glucose score for each food
• Cons:
  • Coaching plan ups the price
  • Slight overkill if you just want numbers
• Pricing: $225/month with coaching
• Where to Buy: Nutrisense.io
• Tip: Perfect for folks optimizing glucose, mood, and performance—especially during weight loss or training.

5. Supersapiens

• Best For: Athletes + performance testing
• Pros:
  • Powered by Abbott Libre Sense
  • Endurance data overlays (running, cycling, etc.)
  • Sleek app + sports UI
• Cons:
  • Not FDA-cleared for medical use
  • Limited availability in U.S.
• Pricing: ~$175/month
• Where to Buy: Supersapiens.com
• Tip: This one’s for the high-performers. If you’re training, racing, or eating to win—it’s a solid pick.

Quick Comparison Table

CGM	Best For	Sensor Life	Key Feature	Price (approx.)
Dexcom G7	Accuracy + integration	10 days	Health sync support	$300/mo
Freestyle Libre 3	Simplicity + cost	14 days	Slim sensor	$150/mo
Levels	Biohacking + tracking	14 days	Trend reports	$199/mo
Nutrisense	Coaching + nutrition	14 days	Food scores	$225/mo
Supersapiens	Endurance training	14 days	Athlete-focused	$175/mo

Final Word: Which CGM Wins?

• Best for Beginners: Freestyle Libre 3
• Best for Biohackers: Levels
• Best for Performance & Syncing: Dexcom G7
• Best for Coaching: Nutrisense
• Best for Athletes: Supersapiens

In 2025, CGMs are more than medical tools—they’re windows into how your body actually works.

Want to Try It Yourself?

Download our Free CGM Tracker Template  — track glucose spikes vs meals, mood, and sleep patterns. Built for Notion, PDF, and Sheets.

Related Reads

• Ozempic Lifestyle: Side Effects & Long-Term Risks
• Dopamine Detox: Myth or Miracle?
• How to Spot Fake AI Tools (2025 Guide)