DE
EN
Free
Free
- 2 Reviews per month
- 2 Personas per Review
- Chat (up to 3 / Review)
- PDF report (basic)
- AI summary
Use case · Ad
Get your ad tested — honest feedback in about 20 minutes.
Choose from over 60 synthetic personas — lifelike profiles of your target audience — and put your ad in front of the right ones. Each returns a Review, plain-language reasoning, and a PDF report you can pass on — 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 market research — they don't replace it for final validation.
- over 60
- Personas to choose from
- ~20 min
- to your 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 the budget goes out — not in a live campaign.
Putting an ad live without checking it against your audience first burns ad budget on a live test — and you often only notice once the click-through rate disappoints. With synthetic personas, you get the feedback before the first euro of ad spend goes live.
Time to results
Live ad test days of live data
Radical Personas about 20 min
Cost per evaluation
Live ad test your ad budget
Radical Personas < €2
A live test delivers real market data that a synthetic test does not replace — the time and cost advantage applies above all to early iteration, before you pay for reach. Comparison is illustrative and does not replace real market research. Bars are schematic.
Persona voice · Example · translated from German 
Karl Winkler, 46 Wine tavern owner & winemaker · synthetic persona — not a real human
“Your ad promises me the moon — to me, that's just noise. I put stock in what's real, in craft, not in big words. Tell me straight out what's actually behind it, and then we'll talk.”
Karl Winkler, 46 Wine tavern owner & winemaker · synthetic persona — not a real human
§ III Results
What you actually get.
Each selected Persona reviews your ad against these criteria — with a Score and a reasoned quote explaining why something works or falls flat:
- Attention Does the ad grab attention at all as people scroll past?
- Core message What sticks — and does the message actually land?
- Visual design How appealing are the image, layout, and overall look?
- Personal relevance Does the ad speak to the person's needs, interests, and values?
- Credibility How believable is the message — or does it sound overblown?
- Emotional response What feelings does the ad trigger — and why?
- Impulse to act Would the person take action — click, buy, look it up?
- Overall score An overall Score (1–10) from each Persona's perspective.
What a result looks like
Sample result · translated from German Ad Review
Karl Winkler, 46
Wine tavern owner & winemaker · synthetic persona
5.0/10
Overall
Attention 7.0/10
Credibility 3.0/10
Core message 5.0/10
Impulse to act 4.0/10
“The image pulls the eye, I'll give you that. But the big promises — those I don't believe. It sounds like advertising, not honest craft. I'm missing the proof that something real is behind it, the way I can tell right away at the table.”
AI summary: The ad catches the eye but fails on credibility with this Persona — the big promises come across as inflated and unsupported. Concrete, honest proof instead of marketing language would lift trust.
What would your target audience say about your ad?
Free plan, no credit card — your first result in about 20 minutes.
The finished report
Your ad test as a PDF that holds up in meetings.
Every Persona Review, the scorecard for each criterion, and the AI summary in one clean report — ready to share with your team, clients, or leadership.
§ 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 ad — in three steps.
01 Your object
Upload your ad
Upload the ad creative as an image and text — no setup, no installation. You don't have to stay at your screen 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 ad.
Every Persona stays available after the test — in character, with memory of its Review. Ask why a Score came out the way it did and what would make your ad more convincing. Example conversation, translated from German.
Karl Winkler
Wine tavern owner & winemaker · synthetic persona
Why only 5.0 out of 10?
The image is nice, I'll give you that. But you're promising me the moon, and I don't believe it. I trust what's real — and all I hear here is ad noise, no proof.
What would convince you?
Talk to me like a person, not like a brochure. Show me something concrete I can hold on to — who's behind it, what you actually deliver. With me, honesty wins. Big words never do.
What did you like?
The presentation, honestly. There's care in it, I can feel that — the same way I can tell care at the table. A shame the message itself stays hollow. Put that effort into the truth.
Suggested questions
Type a message…
§ V Testimonials
What customers say
What users say in practice.
Independent professionals and teams from the DACH region 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 ad 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 an ad the way a specific type of consumer 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 market research; they don't replace it.
How accurate are synthetic personas?
Synthetic personas reach ≈85% replication accuracy, benchmarked against the test-retest reliability of human self-responses (Stanford HAI, Park et al., 2024 — preprint, n=1,052). Adoption points the same way: 73% of market researchers already use synthetic responses (Qualtrics 2025). Every Review at Radical Personas states its reasons, and the scientific basis is documented with sources.
Do synthetic personas replace real market research?
No. Synthetic personas deliver fast, reasoned audience feedback — they complement real market research; they don't replace it for final validation. They also represent average perspectives more reliably than extreme positions.
How much does it cost to test an ad?
The free plan costs nothing: 2 Reviews per month, no credit card. Paid plans start from €29/month. A single Review costs under €3 — while one weak ad running live quickly burns many times that in ad budget.
How long does an ad test take?
About 20 minutes from upload to finished PDF report — and you don't have to stay at your screen while it runs. Instead of putting the ad live for days and waiting for reliable data, you see your audience's feedback before any budget is spent.
What ad formats can I test?
You upload the ad as an image together with its copy — a social media ad, a banner, or a creative plus the accompanying text. Each selected Persona reviews attention, core message, design, relevance, credibility, emotional response, and impulse to act from its own perspective.
Which personas review my ad?
You choose the ones that match your target audience from over 60 fully developed synthetic personas. Each one has its own background, media habits, and decision style — and reviews your ad 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 ad you hold the rights to 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, get in touch.
§ 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 ad through your audience's eyes.
Free plan, no credit card. Your first report in about 20 minutes.
No credit card required · Cancel anytime · EU-hosted