UserProof

UserProof / YC homepage check / throxy

throxy homepage check

Checked October 28, 2026 · Spring 2025 · throxy.com

70out of 100 · Needs work · #363 of 378

throxy (Vertical AI agents running B2B outbound on autopilot, with human SDRs) scored 70 out of 100 on our homepage check, #363 of 378 YC startups and #38 of 39 in Spring 2025. It passed 7 of 10 checks. The biggest problem: “Book a strategy call →” is 3,987px down the page on a phone, below the first screen.

throxy home page on a phone
throxy on a 390px phone, October 28, 2026. Outlined: “Book a strategy call →”, the button we tested.
  • Fail
    A sign-up, demo or get-started button on the first phone screen (−20 points)“Book a strategy call →” is 3,987px down the page on a phone, below the first screen.67% of YC startups pass this.
  • Pass
    The main button does something when tapped“Book a strategy call →” opens https://throxy.cal.com/gtm/strategy-call.99% of YC startups pass this.
  • Pass
    Nothing covers the main buttonNothing sits on top of it.96% of YC startups pass this.
  • Pass
    The main button is at least 44px tall on a phone54px tall on a phone.65% of YC startups pass this.
  • Pass
    The page fits a phone screenNo sideways scrolling on a 390px-wide phone.100% of YC startups pass this.
  • Pass
    No JavaScript errors from the site's own codeNone seen while loading and tapping the main button.95% of YC startups pass this.
  • Pass
    No broken links to the site's own pages12 internal links checked.97% of YC startups pass this.
  • Pass
    Everything that looks clickable respondsClickable things on 3 pages responded.90% of YC startups pass this.
  • Fail
    Loads in under 4 seconds on desktop and 6 on a phone (−5 points)Loaded in 6.8s on desktop and 7.0s on a phone.75% of YC startups pass this.
  • Fail
    Images and files load (−5 points)1 image(s) don't load on desktop.92% of YC startups pass this.

How throxy compares

throxy is the outlined dot. The top row is all 378 YC startups we checked; the bottom row is Spring 2025.

Score
All startups378 sites
throxy: 70/100
throxy: 70/100
Spring 202539 sites
Kaelio: 100/100Kashikoi: 100/100Labric: 100/100Mesmer: 100/100StarSling: 100/100Anana: 95/100Aravolta: 95/100Avallon AI: 95/100Cashew Labs: 95/100Cohesive: 95/100Human Behavior: 95/100Lapel: 95/100Nimbic AI: 95/100Parsewise: 95/100Partcl: 95/100PgDog: 95/100Vassar Robotics: 95/100Vybe: 95/100Cactus: 90/100Flott HQ: 90/100Freesolo: 90/100Golf: 90/100Klavis AI: 90/100Atlog: 85/100Third Chair: 85/100Attune: 80/100Bloom: 80/100Bluejay: 80/100Clidey: 80/100Den: 80/100IRBC: 80/100neoncoral: 80/100Paper Instruments: 80/100Naïve: 75/100Plexe: 75/100Prism: 75/100Ralo: 75/100Alkali: 70/100throxy: 70/100
Kaelio: 100/100Kashikoi: 100/100Labric: 100/100Mesmer: 100/100StarSling: 100/100Anana: 95/100Aravolta: 95/100Avallon AI: 95/100Cashew Labs: 95/100Cohesive: 95/100Human Behavior: 95/100Lapel: 95/100Nimbic AI: 95/100Parsewise: 95/100Partcl: 95/100PgDog: 95/100Vassar Robotics: 95/100Vybe: 95/100Cactus: 90/100Flott HQ: 90/100Freesolo: 90/100Golf: 90/100Klavis AI: 90/100Atlog: 85/100Third Chair: 85/100Attune: 80/100Bloom: 80/100Bluejay: 80/100Clidey: 80/100Den: 80/100IRBC: 80/100neoncoral: 80/100Paper Instruments: 80/100Naïve: 75/100Plexe: 75/100Prism: 75/100Ralo: 75/100Alkali: 70/100throxy: 70/100

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.

Set up UserProof free

Get the next report

We run this check every month on new YC companies. One email when the next report is out, nothing else.

Other Spring 2025 startups with similar scores

← #363 Solva · #363 Trim → · 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.