Best CGM for Non-Diabetics (2025): Levels vs Nutrisense vs Signos
Continuous Glucose Monitors (CGMs) are no longer just for diabetics. Metabolic health companies now offer CGM-based
programs for weight loss, energy optimization, and general wellness.
Here’s the data-driven comparison of the top platforms.
Quick Comparison
| Platform | Monthly Cost | CGM Hardware | Best For |
|---|---|---|---|
| Levels | $199/mo | Dexcom G7 or Libre 3 | Metabolic optimization |
| Nutrisense | $225-350/mo | Dexcom or Libre | Dietitian coaching |
| Signos | $199-399/mo | Dexcom G7 | Weight loss focus |
How It Works
These platforms use medical-grade CGM hardware (Dexcom or Abbott Libre) but provide their own app layer with:
- Food logging and glucose response tracking
- Insights on what spiked your glucose
- Personalized recommendations
- Required prescription (handled by the service)
Note: Non-diabetics generally need a prescription to obtain CGMs. These services handle that via telehealth.
Levels
The original “metabolic fitness” platform, popular in biohacking circles.
- Price: $199/month (annual program available)
- Hardware: Dexcom G7 or Libre 3
- App: Comprehensive food logging, zone scores, trends
- Coaching: Async support, no live dietitian
Pros
- Best app experience and design
- Detailed metabolic scoring
- Zone-based stability metrics
- Strong research/content focus
Cons
- No live coaching included
- Expensive for ongoing use
- Waitlist may apply
Nutrisense
CGM platform with built-in dietitian access.
- Price: $225/month (basic) to $350/month (with coaching)
- Hardware: Dexcom or Libre
- App: Food logging, insights, trends
- Coaching: Live registered dietitian access
Pros
- Dietitian coaching included in higher tiers
- Personalized guidance
- Good for beginners who need support
Cons
- Most expensive option
- App less polished than Levels
- Coaching quality varies by dietitian
Signos
Weight-loss focused CGM program with AI-driven recommendations.
- Price: $199-399/month depending on plan
- Hardware: Dexcom G7
- Focus: Weight loss through glucose management
- Features: Exercise timing recommendations, meal scoring
Pros
- Explicit weight loss focus
- Exercise timing recommendations
- AI-driven personalization
Cons
- Less established than Levels/Nutrisense
- Pricing can be confusing
- May be overkill for general wellness
CGM Hardware: Dexcom vs Libre
| Feature | Dexcom G7 | Abbott Libre 3 |
|---|---|---|
| Accuracy | Best | Very Good |
| Wear Time | 10 days | 14 days |
| Size | Smaller | Slightly larger |
| Real-time | ✅ | ✅ |
Most platforms offer choice. Dexcom G7 is generally considered more accurate; Libre 3 lasts longer.
Is CGM Worth It for Non-Diabetics?
Best Use Cases:
- Understanding personal glucose responses to foods
- Optimizing meal timing and composition
- Weight loss via metabolic awareness
- Athletes optimizing fueling
- Biohackers wanting data
Limited Value For:
- Already healthy, intuitive eaters
- Those who won’t change behavior based on data
- Budget-constrained users
Verdict
For metabolic optimization: Levels—best app, most data-focused, great for biohackers.
For personalized coaching: Nutrisense—dietitian access is valuable for beginners.
For weight loss focus: Signos—explicitly designed for weight management.
All platforms handle the prescription requirement. Expect to commit $200-350/month for meaningful use.