Looking for a Heurilens alternative?
Heurilens is a serious tool and the closest thing on this page to what we do. It runs 25 modules over your live site, covering usability, accessibility, performance and search, and it grounds them in published usability principles and design rules rather than one model's taste. Two things separate us. Their scores are not published as calibrated against anything outside their own method, where ours are fitted to what thousands of real people said about real pages. And an audit is where they stop, where we come back 30, 60 and 90 days later with what your changes did to your search traffic.
Heurilens and you x you i, side by side
| Feature | you x you i ResearchPublished research and standards, your real page, and your real search data | Heurilens ChecklistsPublished usability principles and design rules |
|---|---|---|
| Conversions More of your visitors buy | ||
| Tells you why people are not buying | Measured | Opinion |
| Checks your headline says what you sell | Measured | Opinion |
| Technical health More visitors arrive, more of them buy and more people can use your site | ||
| Checks how fast your pages load | Measured | Measured |
| Checks it works on phones | Checks | Not checked |
| Checks people with disabilities can use it | Measured | Measured |
| Trust and brand More visitors trust what they see | ||
| Checks your site looks trustworthy | Checks | Opinion |
| Checks your brand is consistent | Measured | Opinion |
| Predicts where visitors look first | Measured | Not checked |
| Clarity More of your visitors buy | ||
| Rewrites your words for you | Not checked | Opinion |
| Checks how hard the page is to take in | Checks | Opinion |
| How it works How each tool is run and priced, and what its scores rest on | ||
| Emails you what your fixes did, 30 days on | ||
| Scores measured against what real people said, not an opinion | ||
| One audit, no subscription | ||
| Pricing | $5 per audit, no subscription required | From $19/mo |
Most website audits are one AI's guess. Every score in yours comes from machine-learning models trained on how thousands of real people rated thousands of real web pages, and checked against the standards professionals use for speed, accessibility, readability, and brand. It is the grading a university lab runs, for the price of a coffee.
Grounded in research and web standards
- WCAG 2.2 accessibility standard
- Google Core Web Vitals performance standard
- Usability research usability principles
- Web-credibility research trust
- Eye-tracking research visual attention
- Readability research clarity
- Colour science brand consistency
When to choose Heurilens
Choose Heurilens if you want a steady stream of UX analysis and you like paying in credits, picking the modules you care about per run. The grounding in published usability principles is real, the turnaround is instant, and for a designer who wants a structured pass over a mockup before it ships, that is a good trade. If you are reviewing something new most weeks, a credit plan is the right shape and a one-off audit is not.
When to choose you x you i
Choose us when the number has to mean something outside the tool that produced it, and when you want to know afterwards whether the work paid. Our scores are fitted against what thousands of real people said about real pages, so the same page scores the same twice and a low score points at a specific, named problem. Connect Search Console and we email you at 30, 60 and 90 days with what your changes did to your traffic. The audit is $5, paid once, with no subscription required.
What we check that Heurilens does not
Every one of these is a row in the table above, ticked in our column and blank in theirs.
- Checks AI can read and quote your pages
- Connects to Google Search Console
- Shows which searches moved after your audit
- Links your fixes to your Google traffic
- Shows what AI answers cost you in clicks
- Compares your clicks with last year
- Tracks your score against your Google traffic
- Checks it works on phones
- Predicts where visitors look first
- Flags copy that sounds AI-written
- Emails you what your fixes did, 30 days on
- Scores measured against what real people said, not an opinion
- One audit, no subscription
What a year costs
Same year, both tools, list prices only.
- Heurilens Starter, 200 credits a month, $19 a month
- $228a year
- you x you i $5 an audit, 12 audits, one a month
- $60a year
- Difference over a year
- $168
And you only pay for the audits you run. One audit is $5, paid once, so a year of monthly checks is a ceiling and not a bill. A subscription is the other way round: you pay it whether you look at it that month or not.
The two tools do different jobs, and the table above says which. This is only what each one asks for.
Heurilens list price read from heurilens.com on 14 July 2026. Prices change; this one is checked by hand.
Heurilens vs you x you i: common questions
What is wrong with an AI score?
Nothing, if you know what it is measured against. Ours is fitted to what real people reported about real pages, so a 62 has a meaning outside our own head and the same page scores the same twice. Heurilens ground their analysis in published usability principles, which is a real foundation. What they do not publish is what their number is calibrated against.
Does Heurilens check accessibility and speed?
Yes, and we will not pretend otherwise. They publish WCAG 2.1 and screen-reader checks, and performance analysis covering load times and Core Web Vitals. If those are the whole of what you need, they will do the job. The difference is what the scores answer to, and whether anything tells you later that the fixes worked.
Do you look at the design as well as the words?
Yes. We predict where a visitor's eye lands first, using research on how people actually look at pages, and we check that your brand holds together across the site rather than on a single page.
Is there a subscription?
Only if you want one. A single audit is $5, paid once, with nothing to sign up for. There is an optional plan for regular audits, but you are never put on it by buying one.
What is the audit based on?
Our own models, trained on what real people did on real websites: the pages they left, bought from, read, and trusted, plus the web standards for speed, accessibility, readability, and brand. A chatbot learns from text written about websites; these learn from what actually worked. Every fix comes from published research, ranked by the size of its effect.
Can't an AI chatbot tell me the same thing?
For a decision the business rides on, you want judgment that holds still. Ask a chatbot the same question twice and the answer changes, because it is giving you the average of everything it has read, where the loudest voice often wins. Our scores stay put and point at a specific fix, so you can act on one and defend it to whoever signs off.
Why not just paste my website into a chatbot?
Because a chat ends. It answers the question you thought to ask, and then it is over: it does not know what you changed afterwards, it has never seen your traffic, and it will never come back in October to tell you what the edit you made in July was worth. Ours ranks the fixes in the order worth doing, then watches what your search traffic does and emails you the numbers at 30, 60 and 90 days. You still make the changes. Nothing here decides on its own that your homepage needs rewriting.