AI user testing for SaaS products
Find out why new users get stuck.
You’ve seen your product too many times to experience it like a first-time customer. StrangerTest lets independent AI users try it cold, then shows you where they got confused, lost trust, or stopped.
Free scan. No account. Two to four minutes, and you watch it happen. The free scan stays on your public pages — nothing is bought, sent, submitted or changed.
Built for people who are too close to their own product — founders, developers, product managers, designers, indie hackers.
How it works
See what happens when strangers try your product.
We understand what your product promises
Before anyone tries it, StrangerTest establishes who the product is for, what it offers, and what a new visitor should be able to do next — the standard every journey is measured against.
Independent users try it cold
Users with different goals explore the live product in real browsers. Nobody tells them what is wrong, where to look or what to find. They navigate, make decisions, get stuck, recover — and every step leaves evidence.
We separate signal from noise
StrangerTest compares the journeys to find the friction that actually matters: where different people hit the same wall, and where one person’s trouble was just one person’s. If the evidence is weak, we say so.
Answers, not another UX checklist.
Your analytics show where users drop. StrangerTest helps explain why.
- Where users lost the thread
- What they expected, and what actually happened
- Which friction matters, and which is noise
- What to fix first
Every finding comes with the evidence behind it — the page, what the user expected, and what happened instead — so you can check it yourself before you change anything.
Not another AI opinion.
Ask an AI to review your site and you get an opinion about a page. StrangerTest observes independent users actually trying the product, compares what happened across their journeys, and reports friction that the evidence supports.
Pricing
Free Scan
$0
no account, no card
The front door. First-time users try what anyone can reach before signing up, and you watch them do it.
- What they understood your product to be
- Where they hesitated, and where they stopped
- The friction that mattered, with the evidence behind it
- Public pages only — nothing is submitted or changed
Full Scan
$29
one-time, no subscription
The free scan tests the front door. The Full Scan continues through signup, onboarding and the product itself, to find the friction beyond the landing page.
- Users sign up and go inside, where your product allows it
- Every issue worth fixing, with evidence and what to change
- A fix prompt you can paste into your coding agent
- One re-test to check the fix actually worked
It builds on a free scan of your product: paste your URL, and the Full Scan is one click from your report.
The Full Scan is a new, deeper run — not the free result with answers unlocked. Nothing is held back from a free scan; the deeper run goes where a visitor without an account cannot.
Reasonable questions
Can't I just ask ChatGPT to review my site?
You can, but that is a review. StrangerTest is a behavioral test. Users navigate independently, meet the live product, make decisions, get confused, recover, and leave evidence behind. The report is built from what happened, not from one model looking at a page and suggesting improvements.
Will it change anything on my product?
A free scan reads public pages only: nothing is bought, sent, submitted or changed. A Full Scan goes further — where your product allows it, a user may create a test account, confirm its email and sign in, because that is the only way to reach onboarding. Paying, buying, sending and deleting are refused before they execute, card fields are never filled, and a CAPTCHA or human-verification check is reported rather than bypassed.
What if nothing is wrong?
Then we say so. A scan that invents a problem to look useful is worth less than nothing, because you would act on it. Plenty of good products come back with one small observation, or none.
Why trust what one user ran into?
You should not, and the report does not present it as more than it is. When one person hits something and nobody else went that way, it says exactly that. When several independently hit the same wall, it says that instead — and that is the finding worth acting on first.
Can it tell me why I'm not getting traffic?
No. StrangerTest tests what happens once someone arrives: whether they understand the product, trust it, sign up and reach value. Where visitors come from is a question for your analytics.
What happens to my data?
We store what the users saw and did so you can check the evidence yourself. Reports are private unless you create a share link. Test credentials, if you give us any, are encrypted and never appear in a report or a shared page. Data and safety has the detail your procurement process will ask for.