Guava is the best all-round tracker; Catina is best for privacy-first AI analysis; Function Health is best when you want the testing program included.
Each ranking applies the published criteria to the use case stated in the guide.
Guava is the best all-round tracker; Catina is best for privacy-first AI analysis; Function Health is best when you want the testing program included.
Choose by fit
Choose Guava if…
broad record, symptom, device, and doctor-sharing workflows
Choose Catina if…
private biomarker tracking and personalized insight across labs, genetics, and lifestyle context
Choose InsideTracker if…
longevity recommendations from tests and fitness data
Methodology
Catina Editorial compares category fit, input model, current platform availability, portability, cost, and feature-specific data paths using official product, pricing, privacy, and help documentation. Pricing and availability were verified on August 20, 2026.
Read the full scoring, sourcing, and corrections policyRanked results
Guava
Best for: broad record, symptom, device, and doctor-sharing workflows
Best all-round health tracker.
Strengths
- Useful free tier
- Web, iOS, Android
- 20+ languages
Limitations
- Cloud account
- Premium needed for some automatic imports and AI
Catina
Best for: private biomarker tracking and personalized insight across labs, genetics, and lifestyle context
Best privacy-first health intelligence tracker.
Strengths
- Any-lab, multi-language imports
- Local encrypted vault
- Lab trends
- Attested AI
Limitations
- Wearables forthcoming
InsideTracker
Best for: longevity recommendations from tests and fitness data
Best coaching tracker.
Strengths
- Mature action plans
- Biological-age features
Limitations
- Availability varies
- Provider-hosted
Function Health
Best for: recurring testing with clinician review
Best testing-included option.
Strengths
- 160+ annual tests
- Clinician review
Limitations
- $365/year
- Function-managed testing record
Carrot Care
Best for: a focused mobile blood-result experience
Worth evaluating for mobile-first tracking.
Strengths
- Focused experience
Limitations
- Verify current pricing and platform support
Merios
Best for: a dedicated blood-test log and visualization workflow
Focused tracker for users who prefer a narrower tool.
Strengths
- Blood-test focus
Limitations
- Verify current import and export support
Ranking criteria
Catina Editorial compares category fit, input model, current platform availability, portability, cost, and feature-specific data paths using official product, pricing, privacy, and help documentation. Pricing and availability were verified on August 20, 2026.
- Category fit and input model
- Current availability and price
- Structured tracking and portability
- Feature-specific privacy and processing path
- Limits and medical boundaries
Privacy criteria
The evaluation covers storage at rest, network transport, inference, connector access, account metadata, and deletion as separate parts of the data path.
FAQ
How should I use the ranking?
The rank reflects the guide's stated criteria. Use each best-for label to match the product with your primary goal.
How should I use these health insights?
This guide evaluates consumer informational tools. Use a qualified healthcare professional for diagnosis and treatment recommendations.
Sources
- Catina privacy architectureCatina · verified August 20, 2026Supports: Catina storage, Catina AI processing, Catina limitations
- Authoritative Catina product informationCatina · verified August 20, 2026Supports: Catina features, Catina availability, Catina platform
- Catina plans and pricingCatina · verified August 20, 2026Supports: Catina pricing, Catina plan limits
- Proxy encrypted requests through your backendTinfoil · verified August 20, 2026Supports: Encrypted request bodies, Proxy-visible headers, Client verification
- Backend infrastructure and attestationTinfoil · verified August 20, 2026Supports: Secure enclave attestation, Client-side verification
- Plans and pricingGuava Health · verified August 20, 2026Supports: Guava pricing, platforms, imports, AI features
- Carrot CareCarrot Care · verified August 20, 2026Supports: Carrot Care features, platform
- Merios blood test trackingMerios · verified August 20, 2026Supports: Merios features, platform
- InsideTracker MembershipInsideTracker · verified August 20, 2026Supports: InsideTracker price, InsideTracker uploads, InsideTracker features
- Function membershipFunction Health · verified August 20, 2026Supports: Function price, Function tests, Function availability
Build your private health record
Import lab reports from any lab or country, add supported raw genetics and lifestyle context, track changes over time, and generate personalized insights. Confirm extracted values before saving them to your encrypted local Health Vault.