Function Health vs Levels
A side-by-side comparison of two AI tools on pricing, fit, and capability.
Function Health
Longevity Membership
Levels
Glucose Tracking
| 9/10 | Rating | 7.9/10 |
| health-coaches | Tier | wearables |
| Longevity Membership | Category | Glucose Tracking |
| From ~$365/yr | Starting price | From ~$199/yr + sensors |
| Annual membership | Pricing model | Subscription + sensors |
| Cloud + lab draw | Deployment | Sensor + cloud app |
| Yes | Self-serve | Yes |
| Anyone who wants wide twice-yearly lab coverage with AI summaries and clinician sign-off | Best for | Those who want CGM data turned into clear food and lifestyle feedback |
Our verdict
On balance, Function Health edges ahead at 9/10 — but if your budget, tier, or existing stack favors the other, it can be the better fit. Read both full reviews.