DayTwo vs Function Health
DayTwo vs Function Health, compared side by side on 19 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: DayTwo is on 60/100 and Function Health on 55/100.
Where each one leads
DayTwo
- our overall score: 60/100 against 55/100
- headcount: 16 against 7
- LinkedIn following: 10,064 against 152
Function Health
- agent readiness: 45/100 against 22/100
- domain rating: 71/100 against 47/100
- funding raised: $298M against $90.0M
At a glance
| Measure | DayTwo | Function Health |
|---|---|---|
| What it is | Personalized nutrition and metabolic health platform using gut microbiome and AI. | Membership-based service offering 160+ lab tests, doctor insights, and lifetime health tracking. |
| Category | Healthcare, Nutrition, Microbiome, Diabetes | HealthTech, Telemedicine, Longevity, Precision Medicine |
| Sells toBusiness model | B2B | B2C |
| Offering | Software | Services |
| Founded | 2015 | 2021 |
| Headquarters | Tel Aviv, Israel | Miami, United States |
| Status | Inactive | Active |
Size, funding and growth
| Measure | DayTwo | Function Health |
|---|---|---|
| Employees | 16 | 7 |
| Headcount growthLast 12 months | -39.9% | Not published |
| Total funding | $90.0M | $298M |
| Latest round | Series C | Series B |
| Valuation | Not published | $3K |
| LinkedIn followers | 10,064 | 152 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | DayTwo | Function Health |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 60/100 | 55/100 |
| Traction | 52/100 | 49/100 |
| Team | 70/100 | 70/100 |
| Community | 15/100 | Not published |
| Search visibility | 31/100 | 41/100 |
| Quality | 65/100 | 58/100 |
| Agent readinessHow well an AI agent can read and act on the site | F (22/100) | D (45/100) |
| Domain ratingLink authority, 0-100 | 47/100 | 71/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | DayTwo | Function Health |
|---|---|---|
| Hosting | Google Cloud | Vercel |
| CDN | Not detected | Cloudflare |
| Frameworks | Not detected | Svelte, Astro |
| Analytics | Not detected | Mixpanel |
Product and pricing
| Measure | DayTwo | Function Health |
|---|---|---|
| Key features | Not published | Comprehensive Lab Tests, Doctor Insights & Clinician Summaries, Lifetime Results Tracking, Nationwide Testing Access, Early Disease Detection |
DayTwo vs Function Health: common questions
Which is better, DayTwo or Function Health?
On our 0-100 score DayTwo rates higher (60/100 against 55/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 19 data points above: read the rows that match what you are buying for.
How do DayTwo and Function Health compare on the numbers?
DayTwo leads on our overall score (60/100 against 55/100), headcount (16 against 7), LinkedIn following (10,064 against 152). Function Health leads on agent readiness (45/100 against 22/100), domain rating (71/100 against 47/100), funding raised ($298M against $90.0M).
Read the full DayTwo review and pricing or the Function Health review and pricing. You can also browse other DayTwo alternatives we track.

