Free Tool · AI Humanizer
Make AI text sound like you wrote it.
Paste ChatGPT/Claude/Gemini output. PostSpark rewrites it in your brand voice with real cadence, contractions, and quirks — no more robotic tells.
- 3 free repurposes monthly
- No credit card required
- Cancel anytime
The problem · The fix
What's costing you hours — and how PostSpark removes it.
What's draining your week
- Raw AI copy sounds robotic — readers churn in the first sentence.
- GPTZero and Originality.ai flag your posts as 'AI-generated'.
- Manually humanizing every draft eats 20 minutes per post.
What PostSpark gives you
- Brand Voice AI keeps every rewrite in your tone (Pro users auto-apply).
- Real handwritten cadence — contractions, rhythm shifts, casual pivots.
- Free for 3 humanizations/month, Pro unlimited at $19/mo.
Your workflow
How it works for you
Step 01
Paste AI text
Any output from ChatGPT, Claude, Gemini or Jasper.
Step 02
Pick your voice
Casual, professional, witty, contrarian.
Step 03
Copy & publish
Ships ready for LinkedIn, X, blog, or email.
Pricing
Simple Pricing. Real Value.
Switch to annual to save ~20% (2 months free)
Free
Try it without a credit card
$0/month
- 3 repurposes per month
- All content formats
- Tweet, LinkedIn, Email outputs
- Copy and export
- ✗ Brand Voice AI
- ✗ Unlimited repurposes
Most Popular
Pro
For creators who publish daily
$24/month
- Unlimited repurposes
- All content formats
- Brand Voice AI training
- Spark Copilot assistant
- AI Image Studio
- Hook Lab + virality scoring
- SEO Blog Writer
- Content Calendar
- Priority generation
- History and regeneration
30-day money-back guarantee
Agency
For teams and agencies
$49/month
- Everything in Pro
- 5 team seats
- Multi-brand workspaces
- Client approval links
- White-label review pages
- Agency analytics rollup
PostSpark replaces: Jasper ($49) + Buffer ($15) + Canva Pro ($15) + Surfer SEO ($89) = $168/month
PostSpark Pro: $19/month billed annually
Questions Before You Start
Yes — 10 free repurposes every month with no credit card required. When you hit your limit, upgrade to Pro for unlimited access.