AI Copy Audit Tool

You know your copy isn't converting.Now you'll know why.

Paste any marketing text. Get a full 7-module diagnostic in under 60 seconds. No AI rewrites. Just the truth about what's killing your conversions.

Free plan: 1 full analysis/day, no credit card
No AI rewriting7 diagnostic modulesResults in under a minute
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copy analyses completed

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Real output

A full diagnostic, not just a vague score

Every module gives you specific, actionable insights. Not generic advice you've heard before.

Copyboost diagnostic report preview
7 diagnostic modules

Everything your copy needs to convert

A psycholinguistic audit that scores your text on 6 conversion axes and tells you exactly what to fix.

01

Audience Fit

Stop guessing if your message resonates

Run your copy against your actual target personas before you publish. Know if your message lands or falls flat for the people who matter.

02

Conversion Diagnostic

See exactly what's killing your conversion rate

Get scored on Emotion, Logic, Credibility, Urgency, Action clarity, and Readability. Know exactly which axis is dragging your conversion rate down.

03

Variants

Test angles designed to convert, not just rephrase

Get three rewritten versions of your text with different persuasion angles. Run A/B tests with options that were designed to convert, not just paraphrased.

04

Brand Voice

Reproduce your best writing on demand

Feed in a sample of your best content. Copyboost extracts your writing fingerprint so you can reproduce it on demand, at any scale.

05

Format Repurpose

One text, five formats, zero rewriting

Turn one piece of copy into a LinkedIn post, email, Twitter thread, video script, and more. Stop rewriting from scratch every time.

06

Translate and Adapt

Sound native in every language

More than translation. Your copy gets adapted so it reads native in the target language, with the right idioms, tone, and cultural references.

07

Rewrite Your Way

Rewrite in your voice, not a robot's

Transform any draft into your own voice. Not the generic AI sound that readers instantly recognize. Yours, with your rhythm and your words.

How it works

From paste to diagnosis in 3 steps

1

Paste your text

Any marketing copy works: landing page, email, ad, LinkedIn post, product description. Paste it as-is.

2

Run the analysis

Copyboost runs it through 7 psycholinguistic modules simultaneously. Takes under 60 seconds.

3

Read your diagnostic

Get your conversion score, axis-by-axis breakdown, and actionable fixes. No fluff, no generic advice.

Pricing

Simple, transparent pricing

Start free. Upgrade when you need more.

Free

Free

Good enough to discover what's wrong with one text per day.

  • 1 full analysis per day
  • All 7 modules
  • Conversion score on 6 axes
  • Cognitive bias detection
  • Optimized version included
Most Popular

Pro

39
/ month

For founders and marketers who iterate daily on their copy.

  • 50 analyses per day
  • All 7 modules
  • 5 custom personas
  • 1 brand voice
Get Pro

Cancel anytime

Business

79/ month

For agencies and teams who need full power across multiple clients.

  • Unlimited analyses
  • All 7 modules
  • 25 custom personas
  • 5 brand voices
  • Schwartz values in diagnostic
  • PDF export of all analyses
  • Priority support
Get Business

Cancel anytime

Need a hands-on expert review of your landing page?

Expert Landing Page Audit · 299€ one-time →
Social proof

Marketers who stopped guessing

Real results from people who ran their copy through Copyboost.

I pasted our homepage copy and got a complete breakdown in under a minute. Found 3 conversion killers I had no idea were there. Revenue went up 18% the following month.

Sarah K.

Sarah K.

Founder, SaaS startup

Our A/B tests kept failing and I couldn't figure out why. Copyboost told me exactly which psychological triggers were missing. The winning variant felt obvious in hindsight.

Marcus T.

Marcus T.

Head of Growth, E-commerce

I write copy for 12 clients and now run every draft through Copyboost before delivery. It's like having a senior conversion strategist review every piece in 47 seconds.

Elena R.

Elena R.

Marketing Director

FAQ

Common questions

A psycholinguistic copy audit analyzes your marketing text through the lens of cognitive science. Instead of checking grammar or tone, it evaluates how your words trigger decision-making processes in your reader's brain. Copyboost scores your text on 6 conversion axes (Hook, Persuasion, Proof and Credibility, Urgency, CTA, and Readability), detects cognitive biases like social proof and anchoring, maps the emotional arc from pain to action, and identifies the persuasion framework your copy follows. The result is a diagnosis that tells you exactly what's blocking conversions, not a rewrite.

Grammarly checks grammar and spelling. Hemingway checks readability. Neither tells you if your copy will convert. Copyboost analyzes persuasion structure, cognitive bias usage, emotional progression, and audience fit. It answers "will this text make someone buy?" not "is this text correct?"

No. Copyboost is built for founders, marketers, and solopreneurs who write their own copy without a copywriting background. The diagnostic explains what to fix and why in plain language, with concrete suggestions.

No. Copyboost diagnoses problems and suggests specific fixes, but it never auto-rewrites your text. You keep full control. The Rewrite module lets you transform drafts in your own voice, not a generic AI tone.

Landing pages, email campaigns, LinkedIn posts, ads, product descriptions, sales pages, and any marketing text. You paste the text as-is, select the content type, and Copyboost adapts the analysis.

Yes. The free plan gives you 1 full analysis per day across all 7 modules. No credit card required. No time limit.

Get started free

Your copy has blind spots.
Find them in 30 seconds.

Every day your conversion killers stay hidden costs you signups. One analysis changes that.

Diagnose my text

Free plan · No credit card · Results in under 60s