Builders trade flexibility for speed. The team that needs to ship 50 campaign landing pages per quarter benefits enormously; the team that needs to ship one canonical homepage with deep CMS integration usually outgrows builders quickly.
For B2B SaaS specifically, the decision is usually: do you need many fast pages (yes builder) or one excellent page (probably custom). Marketing-team-driven multi-page funnels favor builders; product-team-driven single-canonical-page sites favor Next.js / Webflow / custom.
Builders do not produce good pages by default — they remove the engineering bottleneck. The page still needs strong value-prop, proof, CTA, and hierarchy. A bad page built faster is still a bad page.
How Lytms scores it
Lytms scores pages from any source — Unbounce, Webflow, Next.js, custom. The scoring is brand-agnostic to the underlying tool. The diagnostic value is highest on builder-produced pages because builders make iteration cheap; teams that score and iterate weekly tend to converge on strong pages faster than teams that ship once and forget.
See also
See landing page builder on your own page.
One URL. About 2 minutes.