Daysleft vs Function Health
Daysleft vs Function Health, compared side by side on 11 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: Daysleft is on 7/100 and Function Health on 55/100.
Where each one leads
Daysleft
- agent readiness: 53/100 against 45/100
Function Health
- our overall score: 55/100 against 7/100
- domain rating: 71/100 against 0/100
At a glance
| Measure | Daysleft | Function Health |
|---|---|---|
| What it is | A free, instant biological-age mirror that tells you how old your body really is, with no signup required. | Membership-based service offering 160+ lab tests, doctor insights, and lifetime health tracking. |
| Category | HealthTech, Longevity, Biotech, Consumer App | HealthTech, Telemedicine, Longevity, Precision Medicine |
| Sells toBusiness model | B2C | B2C |
| Offering | Software | Services |
| Founded | Not published | 2021 |
| Headquarters | Not published | Miami, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Daysleft | Function Health |
|---|---|---|
| Employees | Not published | 7 |
| Total funding | Not published | $298M |
| Latest round | Not published | Series B |
| Valuation | Not published | $3K |
| LinkedIn followers | Not published | 152 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Daysleft | Function Health |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 7/100 | 55/100 |
| Traction | Not published | 49/100 |
| Team | Not published | 70/100 |
| Search visibility | Not published | 41/100 |
| Quality | Not published | 58/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (53/100) | D (45/100) |
| Domain ratingLink authority, 0-100 | 0/100 | 71/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Daysleft | Function Health |
|---|---|---|
| Hosting | Vercel | Vercel |
| CDN | Vercel | Cloudflare |
| Frameworks | Next.js | Svelte, Astro |
| Analytics | Not detected | Mixpanel |
| Support stack | Not detected | Intercom |
Product and pricing
| Measure | Daysleft | Function Health |
|---|---|---|
| Key features | Not published | Comprehensive Lab Tests, Doctor Insights & Clinician Summaries, Lifetime Results Tracking, Nationwide Testing Access, Early Disease Detection |
Daysleft vs Function Health: common questions
Which is better, Daysleft or Function Health?
On our 0-100 score Function Health rates higher (55/100 against 7/100). 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 11 data points above: read the rows that match what you are buying for.
How do Daysleft and Function Health compare on the numbers?
Daysleft leads on agent readiness (53/100 against 45/100). Function Health leads on our overall score (55/100 against 7/100), domain rating (71/100 against 0/100).
Read the full Daysleft review and pricing or the Function Health review and pricing. You can also browse other Daysleft alternatives we track.