UserProof

UserProof / YC homepage check / Litmus

Litmus homepage check

Checked October 28, 2026 · Summer 2026 · litmushiring.com

80out of 100 · Fair · #250 of 378

Litmus (Evals for humans) scored 80 out of 100 on our homepage check, #250 of 378 YC startups and #31 of 46 in Summer 2026. It passed 9 of 10 checks. The biggest problem: “Book a demo” is 5,381px down the page on a phone, below the first screen.

Litmus home page on a phone
Litmus on a 390px phone, October 28, 2026. Outlined: “Book a demo”, the button we tested.
  • Fail
    A sign-up, demo or get-started button on the first phone screen (−20 points)“Book a demo” is 5,381px 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 Demo” opens https://litmushiring.com/demo.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 phone47px 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 pages24 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.
  • Pass
    Loads in under 4 seconds on desktop and 6 on a phoneLoaded in 1.5s on desktop and 5.8s on a phone.75% of YC startups pass this.
  • Pass
    Images and files loadEverything we requested from the site loaded.92% of YC startups pass this.

How Litmus compares

Litmus is the outlined dot. The top row is all 378 YC startups we checked; the bottom row is Summer 2026.

Score
All startups378 sites
Litmus: 80/100
Litmus: 80/100
Summer 202646 sites
Billow AI Labs: 100/100CueBench: 100/100Daqstra: 100/100Dream: 100/100HyperProbe: 100/100Lamb Labs: 100/100Moonshot: 100/100Orchestra: 100/100Palisade: 100/100Poth Labs: 100/100Rindler: 100/100Sidekick: 100/100Studio: 100/100Audun: 95/100Context.dev: 95/100Decawork: 95/100Dialogus: 95/100Glen: 95/100Hoplite: 95/100Magma: 95/100Marble: 95/100NebuSec: 95/100Snowstone: 95/100Tarifflo Inc.: 95/100Tokenless: 95/100Verdict Machine: 95/100Ekpa: 90/100Grocalo: 90/100Egoist Machines: 85/100TryNearby: 85/100Axelrod: 80/100Datoric: 80/100Nex: 80/100Olam Labs: 80/100Palisade: 80/100Petrarch: 80/100Prodigy Research: 80/100Standard Machines: 80/100Tenor: 80/100Agentcard: 75/100DeepReach Inc.: 75/100Florin: 75/100Ooak Data: 75/100Waybill: 75/100Click: 70/100Litmus: 80/100
Billow AI Labs: 100/100CueBench: 100/100Daqstra: 100/100Dream: 100/100HyperProbe: 100/100Lamb Labs: 100/100Moonshot: 100/100Orchestra: 100/100Palisade: 100/100Poth Labs: 100/100Rindler: 100/100Sidekick: 100/100Studio: 100/100Audun: 95/100Context.dev: 95/100Decawork: 95/100Dialogus: 95/100Glen: 95/100Hoplite: 95/100Magma: 95/100Marble: 95/100NebuSec: 95/100Snowstone: 95/100Tarifflo Inc.: 95/100Tokenless: 95/100Verdict Machine: 95/100Ekpa: 90/100Grocalo: 90/100Egoist Machines: 85/100TryNearby: 85/100Axelrod: 80/100Datoric: 80/100Nex: 80/100Olam Labs: 80/100Palisade: 80/100Petrarch: 80/100Prodigy Research: 80/100Standard Machines: 80/100Tenor: 80/100Agentcard: 75/100DeepReach Inc.: 75/100Florin: 75/100Ooak Data: 75/100Waybill: 75/100Click: 70/100Litmus: 80/100

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 Summer 2026 startups with similar scores

← #250 Liquid Compute · #250 Lotas → · 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.