Cycling through all six. Tap any point to stop.

Measured on six things

Your size. Every frame. One search.

Security

HTTPS and HSTS are in place, SPF is set. But no CSP, no frame protection, no DMARC, and no security page or compliance claims. Standard early-stage posture.

Screenshots

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GlassesFinder

About this app

GlassesFinder is a UK frame-size discovery tool. Enter the lens, bridge, and temple numbers printed inside your current glasses (for example, 50-17-140) and browse frames that fit. It is a size-first consumer shopping/SaaS tool, not a retailer checkout or a directory of directories. Founded 15 September 2026 in London, UK.

Key features

1Search frames by exact lens, bridge, and temple measurements (e.g. 50-17-140) across UK retailers.
2Deep filters: fit tolerance, lens height, total frame width, shape, colour, material, gender, price, in-stock only.
3No-signup flow with popular size presets and a 'How to read your size' guide for new users.

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

Adults who wear prescription glasses

Pain points

Struggling to find frames that fit well online, returning ill-fitting glasses.

Primary needs

A quick way to search for glasses by exact measurements to ensure a perfect fit.

Demographic

Online shoppers in the UK

Pain points

Limited ability to filter glasses by size on most retailer websites.

Primary needs

A centralised platform that aggregates glasses from multiple UK retailers with size filters.

Demographic

People with specific fit requirements (e.g., narrow or wide faces)

Pain points

Standard sizes often don't fit, leading to discomfort and dissatisfaction.

Primary needs

Access to a wide range of sizes and the ability to filter by exact measurements.

Scout Review

Written by AI from measured evidence, scored out of 100.

GlassesFinder is a genuinely smart idea executed with a clean, no-nonsense interface. Type the three numbers inside your current glasses, get frames that actually fit. No signup, no email capture, no dark patterns — just a form and a result grid. The filters are deeper than most retailer sites, the size guide is helpful, and the desktop experience is fast. The problems are structural, not cosmetic. The catalogue is one retailer and 623 frames, which makes the 'aggregate UK retailers' pitch feel premature. Mobile performance is sluggish at 6.5s LCP. Security headers are half-configured. Accessibility has real failures on the interactive elements. None of these are fatal — they're all fixable — but together they mean the product is currently a promising prototype rather than a finished tool. The core insight is strong enough to deserve the work.

Measure by measure

Usability

Zero-signup, three-field search with popular presets and a size guide. Filters are deep (fit tolerance, lens height, total width). Only one retailer limits real-world usefulness today.

Design

Clean, functional size-first UI with clear measurement chips and a focused hero form. Card grid is readable, but the '1,000 size pages' claim versus 7 visible results feels thin.

Speed

Desktop Lighthouse 97/100 is excellent. Mobile 63/100 with LCP 6.5s is the weak spot — slow largest paint on phones, where most glasses shoppers actually browse.

Security

HTTPS and HSTS are in place, SPF is set. But no CSP, no frame protection, no DMARC, and no security page or compliance claims. Standard early-stage posture.

Accessibility

Lighthouse a11y 91/100 with real failures: unnamed buttons, contrast issues, and label mismatches. No WCAG statement or a11y page. Solid baseline, clear gaps.

Growth

Real problem, specific UK audience, size-first wedge retailers ignore. But with one retailer and 623 frames, the aggregation value is a promise, not a product yet.

Improvement areas

Catalogue depth: only one live retailer and 623 frames, which undercuts the aggregation promise.
Mobile performance: 6.5s LCP on mobile Lighthouse versus 97/100 on desktop.
Security headers: no CSP, DMARC, frame protection, or X-Content-Type-Options; checklist 5/12.
Accessibility: unnamed buttons, contrast failures, and label mismatches on interactive elements.

Design & Usability

GlassesFinder's design is clean and purposeful: a hero form with three measurement fields, popular size presets, and a card grid that surfaces lens/bridge/temple chips on every result. The 'How to read your size' guide is a smart onboarding touch for users who've never noticed the numbers inside their frames. Usability is the standout — no signup, no email gate, just type 50-17-140 and go. Filters are unusually deep for a tool this young: fit tolerance, lens height, total frame width, in-stock only. The problem is the payoff. The site advertises '1,000 size pages · 623 live frames' but the popular 50-17-140 query returns seven frames, all from a single retailer, all under £24. The UX promises a marketplace; the catalogue delivers a corner shop. Fix the supply side and this becomes genuinely useful.

Speed & Security

Speed is split down the middle. Desktop Lighthouse lands at 97/100 — genuinely fast, snappy, no complaints. Mobile is a different story: 63/100 with a 6.5-second Largest Contentful Paint. For a tool aimed at people browsing glasses on their phones, that's a real problem, and it's the kind of thing that quietly kills conversion. Security is early-stage standard: HTTPS enforced, HSTS on, SPF configured. But there's no CSP, no frame protection, no X-Content-Type-Options, no Referrer-Policy, and no DMARC. The checklist scores 5/12. There's no security page, no SOC 2, no pen-test disclosure, no bug bounty. For a read-only size lookup the risk is low, but the header hygiene is thin and a DMARC record is a five-minute fix that's currently missing.

Accessibility & Growth

Accessibility scores 91/100 on Lighthouse, which sounds strong until you read the failures: buttons without accessible names, insufficient color contrast, and visible labels that don't match accessible names. There's no WCAG conformance statement and no multi-language support, though the UK-only focus makes the latter less urgent. The baseline is decent — the site is responsive and keyboard-navigable — but the specific failures are the kind that lock out screen reader users on the exact interactive elements (buttons, filters) the product depends on. Growth is the more interesting question. The problem is real and specific: UK glasses wearers who can't find frames that fit because retailer filters are useless. The size-first wedge is genuinely differentiated — Warby Parker, Zenni, and EyeBuyDirect all have size filters, but none let you search by the exact three numbers on your current frames. The limit is supply: one retailer and 623 frames is not an aggregation play yet. If they onboard three or four more UK retailers, the value compounds fast. Until then, it's a clever tool with a thin catalogue.

Conclusion

The pitch is simple and the execution is honest: three numbers in, fitting frames out. That's a real problem solved for a real audience, and the UK-only focus keeps the scope sane. What's missing is depth — more retailers, more frames, faster mobile loads, and a security and accessibility pass that matches the polish of the front end. None of that is hard; it's just work. If GlassesFinder adds three or four more UK retailers and fixes the mobile LCP, it becomes the tool every glasses wearer should bookmark. Right now it's the tool they should bookmark and check back on in six months.

Suggestions for improvement

Onboard at least three more UK retailers to make the 'aggregate UK retailers' claim credible — one shop is not a marketplace.
Fix mobile LCP (currently 6.5s): compress hero assets, defer non-critical JS, and consider a CDN for the frame grid.
Add DMARC, CSP, and X-Content-Type-Options headers — cheap wins that move the security checklist from 5/12 to 9/12.
Fix the three Lighthouse a11y failures: name the buttons, raise contrast on filter labels, and align visible labels with accessible names.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	GlassesFinder	Warby Parker	Zenni Optical	EyeBuyDirect
Search by exact frame measurements (lens-bridge-temple)	Yes — core feature, three-field search by exact numbers	No — size info shown per frame but no search by exact measurements	Partial — size filters exist but not by exact lens-bridge-temple input	Partial — some size filtering, no exact measurement search
Aggregates frames from multiple retailers	Yes — currently 1 live UK retailer, 623 frames	No — single-brand retailer	No — single-brand retailer	No — single-brand retailer
Home try-on / virtual fitting	No — size-first discovery only, links out to retailer	Yes — home try-on and virtual fitting	Yes — virtual try-on tool	Yes — virtual try-on available
Price range of frames	Aggregated — results shown from £12.95 upward	Mid-to-premium — typically $95+	Budget — frames from around $6.95	Budget-to-mid — frames from around $6
No-signup browsing	Yes — no account required to search	Yes — browse without account, account needed to buy	Yes — browse without account, account needed to buy	Yes — browse without account, account needed to buy