UserProof / YC homepage check / Fort
Fort homepage check
Checked October 28, 2026 · Winter 2026 · fort.cx
Fort (Strength Tracking Wearable) scored 90 out of 100 on our homepage check, #192 of 378 YC startups and #28 of 59 in Winter 2026. It passed 8 of 10 checks. The biggest problem: the site's own code threw an error: Failed to read the 'serviceWorker' property from 'Navigator': Service worker is disabled because the context is sandboxed and lacks the 'all

- PassA sign-up, demo or get-started button on the first phone screen“Sign up” is on the first screen.67% of YC startups pass this.
- PassThe main button does something when tapped“Sign up” is a form button, so we didn't submit it.99% of YC startups pass this.
- PassNothing covers the main buttonNothing sits on top of it.96% of YC startups pass this.
- PassThe main button is at least 44px tall on a phone44px tall on a phone.65% of YC startups pass this.
- PassThe page fits a phone screenNo sideways scrolling on a 390px-wide phone.100% of YC startups pass this.
- FailNo JavaScript errors from the site's own code (−5 points)The site's own code threw an error: Failed to read the 'serviceWorker' property from 'Navigator': Service worker is disabled because the context is sandboxed and lacks the 'all95% of YC startups pass this.
- PassNo broken links to the site's own pages12 internal links checked.97% of YC startups pass this.
- PassEverything that looks clickable respondsClickable things on 3 pages responded.90% of YC startups pass this.
- FailLoads in under 4 seconds on desktop and 6 on a phone (−5 points)Loaded in 9.6s on desktop and 9.3s on a phone.75% of YC startups pass this.
- PassImages and files loadEverything we requested from the site loaded.92% of YC startups pass this.
How Fort compares
Fort is the outlined dot. The top row is all 378 YC startups we checked; the bottom row is Winter 2026.
Good (90+)Fair (75-89)Needs work (0-74)Each dot is one startup. Tap a dot to see its page.
Is this your startup?
A scan shows what a first visit looks like. Your real visitors show the rest: where they tap, what they skip, where they leave. UserProof records them and gives Claude Code the one fix that costs you the most signups, with the file and line. Free for 3 sites.
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Other Winter 2026 startups with similar scores
← #192 Flott HQ · #192 Freesolo → · All 378 scores
How we checked
We loaded the home page in Chromium as a 390px phone and a 1366px desktop, found the main button by its words (sign up, book a demo, get started and similar), tapped it once, and checked up to 3 pages for broken links and dead taps. Nothing was submitted. Each failed check costs the points shown. Full method.