DE
EN
Free
Free
- 2 Reviews per month
- 2 Personas per Review
- Chat (up to 3 / Review)
- PDF report (basic)
- AI summary
Use case · Logo
Get your logo tested — honest feedback in about 20 minutes.
Pick the right ones from over 60 synthetic personas — lifelike profiles of your target audience — and have them judge your logo. You get a Score from each, reasoned statements in plain language, and a PDF report to pass along — in about 20 minutes.
Methodologically grounded in established personality and behavioral research — including recent Stanford HAI research (2024). The exact study base is covered in the FAQ.
Synthetic personas complement real user research — they don't replace it.
- 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
Your target group's reaction — not a taste debate in the team.
A logo often gets decided on gut feeling or in an internal taste contest — but whose favorite wins says nothing about how your target group will react. Synthetic personas get you exactly that reaction before you commit.
Time to result
Team alignment weeks
Radical Personas about 20 min
Cost per evaluation
Brand study / gut feeling costly / unclear
Radical Personas < €2
A full brand study delivers a depth that a synthetic test doesn't replace — the time and cost advantage applies above all to early logo iterations and shortlisting. Comparison illustrative; it doesn't replace a full brand study. Bars are schematic.
Persona voice · Example · translated from German 
Nina Moser, 35 Graphic designer · synthetic persona — not a real human
“I judge a logo with my eyes first. Yours looks cleanly made — but the mark doesn't stay in my head. Those are the spots I point out before you carve them in stone.”
Nina Moser, 35 Graphic designer · synthetic persona — not a real human
§ III Result
What you actually get.
Every selected Persona reviews your logo against these criteria — with a Score and a reasoned quote on why something works or gets in the way:
- First impression The spontaneous impression in the first three seconds.
- Memorability / recognition Does the logo stick? Would the person recognize it again?
- Professionalism How professional and credible does the logo come across?
- Associations (feelings & thoughts) What feelings and thoughts does the logo trigger — and why?
- Industry fit Does the logo fit the industry and what it's meant to represent?
- Personal appeal Does the logo match the target person's taste?
- Overall score An overall Score (1–10) from each Persona's perspective.
What a result looks like
Sample result · translated from German Logo Review
Nina Moser, 35
Graphic designer · solo business · synthetic persona
6.0/10
Overall
Memorability 5.0/10
Professionalism 8.0/10
Industry fit 6.0/10
Personal appeal 7.0/10
“Cleanly set, the typography works — but the mark is arbitrary, and I won't remember it. In this industry, a logo like that just disappears.”
AI summary: Several Personas praise the professional execution but find the mark forgettable — it's too generic to be recognized.
What would your target group say about your logo?
Free plan, no credit card — your first result in about 20 minutes.
The finished report
Your logo 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 logo — in three steps.
01 Your object
Upload your logo
Upload your logo as an image — no setup, no installation. The run takes about 20 minutes, and you don't have to stay at your screen.
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 logo.
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 logo more convincing. Example conversation, translated from German.
Nina Moser
Graphic designer · synthetic persona
Why only 6.0 out of 10?
The craft is solid — the typography works, someone has discipline. But the mark is generic; once I click away, it's gone. A logo people forget doesn't work for you.
What would it take to convince you?
A distinctive visual idea that also works small and in one color — and that you recognize after a second. Better a clear mark than pretty decoration.
What did you like?
The restraint and the calm typography — no visual noise. That's a good base. What's missing is the one idea that makes it unmistakable.
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 logo 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 logo 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 found ≈85% replication accuracy, benchmarked against the test-retest reliability of human self-responses (Stanford HAI, Park et al., 2024 — preprint, n=1,052). Adoption tells a similar story: 73% of market researchers already use synthetic responses (Qualtrics 2025). Every Review at Radical Personas states its reasons, and the scientific foundation is documented with sources.
Do synthetic personas replace real user research?
No. Synthetic personas deliver fast, reasoned target-group feedback and complement real user research — they don't replace it for final validation. They also capture average perspectives more reliably than extreme positions.
How much does it cost to test a logo?
The free plan costs nothing (2 Reviews per month, no credit card). Paid plans start from €29/month. A single Review costs under €3 — a professional brand study costs far more.
How long does a logo test take?
About 20 minutes from upload to finished PDF report — you don't have to stay at your screen while it runs. Instead of weeks of alignment rounds in the team, you have target-group feedback the same day.
How is this different from asking my team or friends?
A round of opinions from your team or friends mostly reflects personal taste — not your target group's. Radical Personas reviews your logo from the perspective of specific target personas: first impression, memorability, professionalism, associations, and industry fit — each with a reasoned quote instead of gut-feeling votes.
Which personas review my logo?
You pick the ones that match your target group from over 60 fully developed personas. Each has its own background, occupation, and decision style — and reviews your logo from that perspective. The library is rooted in the German-speaking (DACH) market: a feature if that's your audience, a limitation worth knowing if it isn't.
Can I use Radical Personas as an agency or for client projects?
Yes. You can test any logo you're authorized to work with and pass the PDF report on to your clients. From the Pro plan up, you get White-label PDFs (your logo instead of ours) and team accounts — built for agencies and client projects. 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 logo through your target group's eyes.
Free plan, no credit card. Your first report in about 20 minutes.
No credit card required · Cancel anytime · EU-hosted