DE
EN
Free
Free
- 2 Reviews per month
- 2 Personas per Review
- Chat (up to 3 / Review)
- PDF report (basic)
- AI summary
Use case · Social Media
Get your social media post tested — honest feedback in about 20 minutes.
Choose the right profiles from over 60 synthetic personas — lifelike profiles of your target audience — and let them see your post in their feed. You get a Review from each, reasoned feedback in plain language, and a PDF report to 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 audience feedback — they don’t replace it for final validation.
- over 60
- Personas to choose from
- ~20 min
- to the 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 you post — instead of sinking in the feed.
A post your audience scrolls right past costs you reach — and you often only notice days later, when the numbers disappoint. With synthetic personas, you get the feedback before the post goes live.
Time to results
Posting live in the feed Days until data
Radical Personas about 20 min
Cost per test
Posting live in the feed Reach & ad spend
Radical Personas < €2
Real reach and engagement data carry a weight a synthetic test can’t replace — the time and cost advantage applies above all to early iteration, before the post goes live. Comparison is illustrative; it doesn’t replace real audience feedback. Bars are schematic.
Persona voice · Example · translated from German 
Sophie Weber, 24 Social Media Manager · synthetic persona — not a real human
“In the feed, you get one second of my attention. Your image stopped me — but then the copy reads like an ad announcement, not a real voice. That’s exactly where I drop off. I show you those spots before they go live.”
Sophie Weber, 24 Social Media Manager · synthetic persona — not a real human
§ III Results
What you actually get.
Each selected Persona reviews your social media post against these criteria — with a Score and a reasoned quote explaining what works and what doesn’t:
- First impression while scrolling The spontaneous impression in the first second or two in the feed.
- Scroll stop Does the post actually make someone stop scrolling for a closer look?
- Message clarity How clearly and understandably does the post’s message come across?
- Visual design How appealing are the image or graphic and the text layout?
- Personal relevance Does the post connect with the person’s job, interests, and daily life?
- Emotional response What feelings does the post evoke — and why?
- Engagement Would this person interact — like, comment, share, or save?
- Authenticity & credibility How authentic and credible do the post and its sender come across?
- Overall score An overall Score (1–10) from each Persona’s perspective.
What a result looks like
Sample result · translated from German Social media Review
Sophie Weber, 24
Social Media Manager · Berlin · synthetic persona
6.0/10
Overall
Scroll stop 7.0/10
Clarity 5.0/10
Engagement 4.0/10
Authenticity 5.0/10
“The image stops me — but the caption sounds like off-the-shelf advertising. I wouldn’t like or share this; it’s missing a real voice.”
AI summary: The visual stops the scroll, but the caption reads polished and interchangeable — the most common reason a post gets seen but not shared.
What would your audience say about your post?
Free plan, no credit card — your first result in about 20 minutes.
The finished report
Your social media 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 — 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 social media post — in three steps.
01 Your object
Add your post
Paste or upload the post image and caption — no setup, no installation. You don’t have to stay at your desk 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 post.
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 post more worth sharing. Example conversation, translated from German.
Sophie Weber
Social Media Manager · synthetic persona
Why only 6.0 out of 10?
The visual draws me in — I do pause on it. But the caption sounds like off-the-shelf advertising, and in the feed I scroll past anything that doesn’t feel real. I wouldn’t have liked or shared it.
What would make you share it?
A real voice instead of marketing speak. Tell me concretely what’s in it for me, in the first few words — and make it sound like a person wrote it, not a briefing.
What did you like?
The visual language. It’s considered and fits your aesthetic — that genuinely stops me mid-scroll. That same care is just still missing from the copy.
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 social media 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 social media post the way a specific type of user would in their feed — 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 audience feedback; 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 foundation is documented with sources.
Do synthetic personas replace real audience feedback?
No. Synthetic personas deliver fast, reasoned audience feedback and complement the real reactions from your community — they don’t replace them for final validation. They represent average perspectives more reliably than extreme positions.
How much does it cost to test a social media post?
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 weak post that sinks in the feed, on the other hand, costs you reach and, in the worst case, paid ad budget.
How long does a social media post test take?
About 20 minutes from upload to finished PDF report — and you don’t have to stay at your desk while it runs. Instead of publishing the post and waiting days for reach data, you see the audience feedback before it goes live.
Which post formats can I test?
You add the post as an image or as text — say, a feed image, a graphic, or a Reel cover with its caption. Each selected Persona reviews the first impression while scrolling, the scroll stop, clarity, design, relevance, emotion, engagement, and authenticity and credibility from its perspective.
Which personas review my post?
From over 60 fully developed synthetic personas, you choose the ones that match your target audience. Each has its own background, media habits, and decision style — and reviews your post from that perspective.
Can I use Radical Personas as an agency or for client projects?
Yes. You test any post you are authorized to use 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 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 post through your audience’s eyes.
Free plan, no credit card. Your first report in about 20 minutes.
No credit card required · Cancel anytime · Hosted in the EU