DE
EN
Free
Free
- 2 Reviews per month
- 2 Personas per Review
- Chat (up to 3 / Review)
- PDF report (basic)
- AI summary
Use case · Website
Get your website tested — honest feedback in about 20 minutes.
Choose the right ones from over 60 synthetic personas — lifelike profiles of your target audience — and let them walk through your website. You get a Review from each, reasoned feedback in plain language, and a PDF report you can share — in about 20 minutes.
Methodologically grounded in established personality and behavioral research — including recent Stanford HAI research (2024). The full study details are in the FAQ.
Synthetic personas complement real user research — they don't replace it.
- over 60
- Personas to choose from
- ~20 min
- to a finished report
- from €29
- per month · free plan available
- EU
- hosted (AT / DE)
§ I Foundation
What is a synthetic persona?
Synthetic personas are AI-modeled profiles of your target audience, built with psychological depth. They respond to your content the way a specific type of user would — and deliver reviews with reasoned, quotable feedback in minutes. They complement real user research; they don't replace it.
Every Persona is carefully built — from eight psychological layers, grounded in established personality and behavioral research (including Big Five and Kahneman/Tversky). Not a chatbot thrown together in a hurry.
- 1 Biography Life story, occupation, environment
- 2 Psychology (OCEAN) Personality profile — what makes them tick
- 3 Cognitive Biases Typical reasoning errors and their triggers
- 4 Emotional State Baseline mood and what tips it
- 5 Cultural Context Values, Life-World, cultural background
- 6 Behavior Everyday life, media, decision style
- 7 Anti-Patterns What this person rejects or avoids
- 8 Language Style, dialect, tolerance for anglicisms
“Why not just ask ChatGPT?”
ChatGPT can give you a quick take — and for plenty of things, that's enough. But if you want to test your actual target audience, a fixed frame helps: with Radical Personas, you pick specific, consistent profiles — each with a biography, values, and a decision style — that always judge by the same criteria. That makes results comparable: across multiple Personas and across repeated tests.
Full comparison: Radical Personas vs. ChatGPT →
§ II The difference
Test before your site goes live — not once the visitors are gone.
A page that talks past its audience wastes every click you paid good money for — and you often only notice when the numbers disappoint. With synthetic personas, you get that feedback before launch.
Time to result
Traditional UX study 42 days avg.
Radical Personas about 20 min
Cost per test
Traditional UX study €2,000–15,000
Radical Personas < €2
Traditional studies deliver a depth that a synthetic test doesn't replace — the time and cost advantage matters most in early iteration. Time figure: Dscout, survey of 300+ UX researchers (average). Bars are schematic.
Persona voice · Example · translated from German 
Laura Eder, 31 Startup CEO · synthetic persona
“I decide within the first three seconds whether I stay. Your site kept me — right up to a price with no context. Those are the spots I show you before your customers bounce without a word.”
Laura Eder, 31 Startup CEO · synthetic persona
§ III Result
What you actually get.
Each selected Persona reviews your website along these criteria — with a Score and a reasoned quote explaining why something works or gets in the way:
- First impression The spontaneous impression within the first three seconds.
- Message clarity How clear is it what the site is actually about?
- Trustworthiness Proof, testimonials, a legal notice — or just marketing?
- Design & structure How appealing and well-organized does the page feel?
- Call to action How persuasive is the prompt to act?
- Personal relevance Does the content connect with the target person's everyday life?
- Emotional response Which feelings does the page trigger — and why?
- Return visit Would this person come back or recommend the site?
- Mobile experience Does the site actually work well on a smartphone?
- Overall Score An overall Score (1–10) from each Persona's perspective.
This is what a result looks like
Sample result · translated from German Website Review
Franz Hinterberger, 48
Managing director · metal fabrication business · synthetic persona
6.0/10
Overall
Trust 5.0/10
Clarity 7.0/10
Call to action 4.0/10
Design 7.0/10
“Nice site — but I don't see a single reference or a price. I'm not going to call on the off chance.”
AI summary: Several Personas miss proof and price transparency — the most common reason visitors bounce early.
What would your target audience say about your website?
Free plan, no credit card — your first result in about 20 minutes.
The finished report
Your website test as a PDF that holds up in meetings.
Every Persona Review, the scorecard per criterion, and the AI summary in one clean report — to share with your team, clients, or management.
§ IV The Personas
Over 60 Personas — choose your target audience.
From the skeptical decision-maker to the price-conscious founder, from young to seasoned — every Persona is a fully developed profile with its own biography, values, and decision style, from the DACH region and beyond. You pick the ones that represent your target audience.
-
Katharina, 39 -
Franz, 48 -
Maria, 38 -
Emina, 23 -
Herbert, 56 -
Laura, 31 -
Helmut, 71 -
Sophie, 24 -
Thomas, 52 -
Fatima, 32 -
Hannah, 34 -
Werner, 53 -
Aisha, 31 - +55 more
How it works 
How to test your website — in three steps.
01 Your object
Enter your website
Enter the URL or upload your content — no setup, no installation. You don't have to stick around during the roughly 20 minutes.
02 Choose Personas
Select your target audience
From over 60 fully developed synthetic personas, you choose the ones that match your target audience — filtered by region, age, and Life-World.
03 Result
A Review with reasons
In about 20 minutes: a Score for each Persona, reasoned statements in plain language, and an AI summary — as a citable PDF.
Persona Chat
First the Review. Then the conversation about your website.
Every Persona stays available after the test — in character, with memory of their Review. Ask why a Score turned out the way it did and what would make your website more convincing. Example conversation, translated from German.
Franz Hinterberger
Managing director · metal fabrication business · synthetic persona
Why only 6.0 out of 10?
Your site held me for the first few seconds — few manage that. But then: not a single reference, no price. In the end I don't know whether you've already solved my problem. I'm not going to call on the off chance.
What would it take to convince you?
A real customer with a result, in one sentence. And a price without asterisks — or at least a ballpark. Then I'll pick up the phone.
What did you like?
The clear structure, and that you spared me the marketing waffle. I take that seriously. Now bring the same honesty to your proof.
Suggested questions
Type a message…
§ V Testimonials
What customers say
What users say in practice.
Independent professionals and teams from the German-speaking market (DACH) who use Radical Personas in their day-to-day work — from websites to ads to positioning. Quotes translated from German.
I run every new episode past several Personas. I see right away where the message loses people — and sharpen it before the episode goes live.
Daniel Friesenecker
Podcast Strategist & Coach · TheAngryTeddy
With Radical Personas, I test ads and posts on matching audiences before they run. That makes my recommendations defensible — I can show why something works.
Mario Hilger
Social Media Manager
I had my positioning reflected back to me by very different personalities. I would never have seen those blind spots on my own.
Petra Baumgarthuber
Leadership Coach & Consultant
Finally, feedback that comes with reasons — not just “like it” or “don’t like it.” Very valuable for growing my business.
Alfred Baumgarthuber
Owner · Licht-Konzept
Honest feedback from your target group is hard to come by. With Radical Personas, I have it in minutes — backed by real reasoning, not just a number.
Georg Gumpinger
Managing Director · Gut&Co Test & Consulting
The Personas read my website like a skeptical board: polite in tone, merciless on substance. Exactly the sparring you’d want from colleagues — and never get.
Thomas Moshammer
Mentor Coach for Executives
In the Persona test, the young trainee instructor and the mid-career switcher debate our course page at the same time — and they thoroughly disagree. Exactly the friction we need before the season starts, not once the course is underway.
Johann Reisenberger
COO · Snowsports Academy
My clients are at a turning point in their careers — one wrong phrase, and interest turns into hesitation. Luckily, the Personas hesitate out loud: they tell me which sentence they get stuck on, and why.
Andreas Weidinger
Career Coach & Trainer
Where the method hits its limits
Synthetic personas represent average perspectives — not edge cases, and not real conversion data. For final validation, there is no way around real users. Synthetic personas complement real user research — they don't replace it.
§ VI Questions
Common questions about website testing.
What is a synthetic persona?
A synthetic persona is an AI-modeled profile of a target audience, built with psychological depth. It responds to a website the way a specific type of user would — and delivers a Review with reasoned, quotable feedback. At Radical Personas, every Persona is built from eight psychological layers (including biography, Big Five personality, cognitive biases, and culture) — not a one-line prompt. Synthetic personas complement real user research — they don't replace it.
How accurate are synthetic personas?
A Stanford HAI study (Park et al., 2024 — preprint, n=1,052) found ≈85% replication accuracy, benchmarked against the test-retest reliability of human self-responses. Industry adoption points the same way: 73% of market researchers already use synthetic responses (Qualtrics 2025). Every Review at Radical Personas is reasoned and traceable, and the scientific foundation is documented with sources.
Do synthetic personas replace real user research?
No. Synthetic personas deliver fast, reasoned target-audience feedback — they complement real user research; they don't replace it for final validation. They also represent average perspectives more strongly than extreme positions.
How much does it cost to test a website?
The free plan costs nothing (2 Reviews per month, no credit card). Paid plans start from €29/month. A single Review costs under €3 — traditional UX studies run €2,000 to €15,000 per study.
How long does a website test take?
About 20 minutes from upload to finished PDF report — and you don't have to stay at the screen while it runs. Traditional UX research projects take 42 days on average (Dscout, survey of 300+ UX researchers).
How is this different from a free website checker or SEO tool?
Free website checkers mostly measure technology, load time, and SEO. Radical Personas reviews the human impact of your site — first impression, clarity, trust, emotion, and call to action — from the perspective of specific target groups, with reasoned quotes instead of raw metrics.
Which personas review my website?
From over 60 fully developed synthetic personas, you choose the ones that match your target audience — most are rooted in the German-speaking (DACH) market, with international profiles beyond it. Each has its own background, occupation, and decision style, and reviews your website from that perspective.
What language do the personas work in?
Honest answer: review output is currently delivered primarily in German — the persona library is rooted in the German-speaking (DACH) market. An English-language rollout is in progress. If you need English reviews today, contact us before you subscribe and we'll tell you exactly what already works.
Can I use Radical Personas as an agency or for client projects?
Yes. You can test any website you're authorized to test and pass the PDF report on to your clients. From Pro (up) you get White-label PDFs (your logo instead of ours) and team accounts — built for agencies and client work. For larger volumes, talk to us.
§ VII Plans
Pricing
Start for free. Grow when you need more.
Free plan to try it out — no credit card. Five plans from Free to Enterprise — cancel anytime.
Essential
€29/ month
All of Free, plus:
- 10 Reviews per month
- 4 Personas per Review
- Unlimited chat
- PDF report (full)
- DPA available
Pro
€149/ month
All of Essential, plus:
- 50 Reviews per month
- 6 Personas per Review
- 3 team accounts
- 5 Brand Profiles
- White-label PDF
- Journeys up to 5 pages
- Quick Wins & Trade-offs
- Priority support
Business
€749/ month
All of Pro, plus:
- 250 Reviews per month
- 12 Personas per Review
- 6 team accounts
- 10 Brand Profiles
- Dedicated contact
- Journeys up to 10 pages
Enterprise
Price on request
All of Business, plus:
- Unlimited Reviews
- Unlimited Personas
- Unlimited team accounts
- Uptime SLA
- Journeys up to 20 pages
- Compliance (GDPR, FADP)
- On-premises
- SSO / SAML
Fair-use policy applies.
All prices excl. VAT (net) · Reverse charge with a valid EU VAT ID · Invoicing in EUR
More Solutions
All Solutions → Want to test something else?
Same method, different material — pick your Personas and get reasoned feedback from your target audience.
§ VIII Get started
See your website through the eyes of your target audience.
Free plan, no credit card. About 20 minutes to your first report.
No credit card required · Cancel anytime · EU-hosted